from tensorflow.keras.optimizers import SGD
from tensorflow.keras import layers
from keras.layers.core import Activation
from keras.models import Model
from keras.layers.normalization import BatchNormalization
from keras.layers.core import Dense
from keras.layers import Input
from keras.models import load_model
from keras.callbacks import History
history = History()
import os
from contextlib import contextmanager
import time
import gc
CUR_DIR = os.path.dirname(os.path.abspath(__file__))
DATA_DIR = os.path.join(CUR_DIR, "data")
@contextmanager
def timer(title):
t0 = time.time()
yield
def fit(self, env, nb_steps, action_repetition=1, callbacks=None, verbose=1,
visualize=False, nb_max_start_steps=0, start_step_policy=None, log_interval=10000,
nb_max_episode_steps=None,stepper=False):
if not self.compiled:
raise RuntimeError('Your tried to fit your agent but it hasn\'t been compiled yet. Please call `compile()` before `fit()`.')
if action_repetition < 1:
raise ValueError('action_repetition must be >= 1, is {}'.format(action_repetition))
self.training = True
self.stepper = stepper
callbacks = [] if not callbacks else callbacks[:]
if verbose == 1:
callbacks += [TrainIntervalLogger(interval=log_interval)]
elif verbose > 1:
callbacks += [TrainEpisodeLogger()]
if visualize:
callbacks += [Visualizer()]
history = History()
callbacks += [history]
callbacks = CallbackList(callbacks)
if hasattr(callbacks, 'set_model'):
callbacks.set_model(self)
else:
callbacks._set_model(self)
callbacks._set_env(env)
params = {
'nb_steps': nb_steps,
}
if hasattr(callbacks, 'set_params'):
callbacks.set_params(params)
else:
callbacks._set_params(params)
self._on_train_begin()
callbacks.on_train_begin()
episode = 0
self.step = 0
observation = None
episode_reward = None
episode_step = None
did_abort = False
try:
while self.step < nb_steps:
if observation is None: # start of a new episode
callbacks.on_episode_begin(episode)
episode_step = 0
episode_reward = 0.
# Obtain the initial observation by resetting the environment.
self.reset_states()
observation = deepcopy(env.reset())
if self.processor is not None:
observation = self.processor.process_observation(observation)
assert observation is not None
# Perform random starts at beginning of episode and do not record them into the experience.
# This slightly changes the start position between games.
nb_random_start_steps = 0 if nb_max_start_steps == 0 else np.random.randint(nb_max_start_steps)
for _ in range(nb_random_start_steps):
if self.manual:
action = int(raw_input("action?\n"))
elif start_step_policy is None:
action = env.action_space.sample()
else:
action = start_step_policy(observation)
if self.shield is not None:
if self.maze:
inp = get_input_maze(observation)
else:
inp = get_input(observation)
action_bin = to_bin(action)
action = self.shield(inp[0],inp[1],inp[2],action_bin[0],action_bin[1],action_bin[2])
if self.processor is not None:
action = self.processor.process_action(action)
callbacks.on_action_begin(action)
if self.stepper:
action = int(raw_input("action?\n"))
observation, reward, done, info = env.step(action)
observation = deepcopy(observation)
if self.processor is not None:
observation, reward, done, info = self.processor.process_step(observation, reward, done, info)
callbacks.on_action_end(action)
if done:
warnings.warn('Env ended before {} random steps could be performed at the start. You should probably lower the `nb_max_start_steps` parameter.'.format(nb_random_start_steps))
observation = deepcopy(env.reset())
if self.processor is not None:
observation = self.processor.process_observation(observation)
break
# At this point, we expect to be fully initialized.
assert episode_reward is not None
assert episode_step is not None
assert observation is not None
# Run a single step.
callbacks.on_step_begin(episode_step)
# This is were all of the work happens. We first perceive and compute the action
# (forward step) and then use the reward to improve (backward step).
#print observation
if self.manual:
oldaction = self.forward(observation, manual=True)
else:
oldaction = self.forward(observation,manual=False)
# print oldaction
if self.shield is not None:
if self.maze:
inp = get_input_maze(observation)
else:
inp = get_input(observation)
action_bin = to_bin(oldaction)
#sleep(0.01)
action = to_int(self.shield.move(inp[0],inp[1],inp[2],inp[3],action_bin[0],action_bin[1],action_bin[2]))
else:
action = oldaction
#print action, oldaction
if self.processor is not None:
action = self.processor.process_action(action)
reward = 0.
accumulated_info = {}
done = False
for _ in range(action_repetition):
callbacks.on_action_begin(action)
observation, r, done, info = env.step(action)
observation = deepcopy(observation)
if self.processor is not None:
observation, r, done, info = self.processor.process_step(observation, r, done, info)
for key, value in info.items():
if not np.isreal(value):
continue
if key not in accumulated_info:
accumulated_info[key] = np.zeros_like(value)
accumulated_info[key] += value
callbacks.on_action_end(action)
reward += r
if done:
break
if nb_max_episode_steps and episode_step >= nb_max_episode_steps - 1:
# Force a terminal state.
done = True
metrics = self.backward(reward, terminal=done)
episode_reward += reward
step_logs = {
'action': action,
'observation': observation,
'reward': reward,
'metrics': metrics,
'episode': episode,
'info': accumulated_info,
}
oldstep_logs = {
'action': oldaction,
'observation': observation,
'reward': -1,
'metrics': metrics,
'episode': episode,
'info': accumulated_info,
}
# if correction:
# callbacks.on_step_end(episode_step, oldstep_logs)
# episode_step += 1
# self.step += 1
callbacks.on_step_end(episode_step, step_logs)
episode_step += 1
self.step += 1
if done:
# We are in a terminal state but the agent hasn't yet seen it. We therefore
# perform one more forward-backward call and simply ignore the action before
# resetting the environment. We need to pass in `terminal=False` here since
# the *next* state, that is the state of the newly reset environment, is
# always non-terminal by convention.
self.forward(observation)
self.backward(0., terminal=False)
# This episode is finished, report and reset.
episode_logs = {
'episode_reward': episode_reward,
'nb_episode_steps': episode_step,
'nb_steps': self.step,
}
callbacks.on_episode_end(episode, episode_logs)
episode += 1
observation = None
episode_step = None
episode_reward = None
except KeyboardInterrupt:
# We catch keyboard interrupts here so that training can be be safely aborted.
# This is so common that we've built this right into this function, which ensures that
# the `on_train_end` method is properly called.
did_abort = True
callbacks.on_train_end(logs={'did_abort': did_abort})
self._on_train_end()
return history
def train(config):
'''
Trains the model with fit generator and plots the results.
'''
if config.MODEL == 'fcn8':
from pcs_detection.models.fcn8_model import fcn8
elif config.MODEL == 'fcn_reduced':
from pcs_detection.models.fcn8_reduced import fcn8
else:
print('invalid model')
# saving path will also add a time stamp to avoid duplicates and save per epoch
dir_path = os.path.dirname(os.path.realpath(__file__)).rsplit(
'/', 2)[0] + '/scripts'
utid = datetime.datetime.now().strftime('%y_%m_%d_%H%M%S')
model_info = config.MODEL + '_' + config.CHANNEL
config.WEIGHT_SAVE_PATH = '{0}/{1}/{2}_{3}_{4}/{5}'.format(
dir_path, config.WEIGHT_DIR, config.WEIGHT_ID, model_info, utid,
'{epoch:02d}.h5')
# reset umask so new permissions can be written
original_umask = os.umask(0)
#make the model save dir if it does not already exist
if not os.path.exists(config.WEIGHT_SAVE_PATH):
print("Making dir: {}".format(config.WEIGHT_SAVE_PATH))
os.makedirs(os.path.split(config.WEIGHT_SAVE_PATH)[0], mode=0o777)
os.umask(original_umask)
else:
os.chmod(os.path.split(config.WEIGHT_SAVE_PATH)[0], 0o777)
os.umask(original_umask)
# never train on the full image
config.USE_FULL_IMAGE = False
# create the model
weldDetector = fcn8(config)
weldDetector.build_model()
weldDetector = weldDetector.model
# create the generator for the data
DataLoader = dataLoader(config)
DataLoader_val = dataLoader(config)
DataLoader_val.mode = "VALIDATION"
DataLoader_val.loadDataPaths()
# callback to save the weight files
checkpointer = ModelCheckpoint(
filepath=config.WEIGHT_SAVE_PATH,
verbose=1,
save_best_only=True,
mode='max',
monitor='val_sparse_accuracy_ignoring_last_label_ohot',
save_weights_only=False)
# callback to reduce the learning rate
reduce_lr = ReduceLROnPlateau(
monitor='loss',
factor=config.LEARNING_RATE['reduce_factor'],
patience=config.LEARNING_RATE['reduce_patience'],
min_lr=config.LEARNING_RATE['end'],
verbose=1)
# callback to stop early
early_stop = EarlyStopping(monitor='loss',
min_delta=0,
patience=6,
verbose=1,
mode='auto')
# training takes place here
history = weldDetector.fit_generator(
DataLoader.generate(),
epochs=config.N_EPOCHS,
steps_per_epoch=(DataLoader.num_paths // config.BATCH_SIZE) *
config.AUGMENTATIONS['number_aug'],
verbose=1,
callbacks=[History(), checkpointer, reduce_lr, early_stop],
use_multiprocessing=False,
validation_data=DataLoader_val.generate(),
validation_steps=DataLoader_val.num_paths // config.BATCH_SIZE)
print("Finished training.")
# generate a config for validation/inference using the best weights from training
weights_dir = config.WEIGHT_SAVE_PATH.rsplit('/', 1)[0]
best_weights_file = '01.h5'
for file in sorted(os.listdir(weights_dir)):
if file.endswith('.h5'):
best_weights_file = file
config.VAL_WEIGHT_PATH = os.path.join(weights_dir, best_weights_file)
config.MODE = 'VALIDATE'
dump_validation_config(config)
dump_inference_config(config)
# Display and save training curves
fig = plt.figure()
axis1 = fig.add_subplot(311)
axis1.plot(history.history['sparse_accuracy_ignoring_last_label_ohot'],
'ro-')
axis1.plot(history.history['val_sparse_accuracy_ignoring_last_label_ohot'],
'bo-')
axis1.set_title('Training Metrics')
axis1.set_ylabel('Accuracy')
axis1.set_xlabel('Epoch')
axis1.legend(['Train', 'Test'], loc='upper left')
axis2 = fig.add_subplot(312)
axis2.plot(history.history['loss'], 'mo-')
axis2.plot(history.history['val_loss'], 'co-')
#axis2.set_title('Model loss')
axis2.set_ylabel('Loss')
axis2.set_xlabel('Epoch')
axis2.legend(['Train', 'Test', 'Train'], loc='upper left')
axis3 = fig.add_subplot(313)
axis3.plot(history.history['IoU'], 'mo-')
axis3.plot(history.history['val_IoU'], 'co-')
#axis3.set_title('Model IoU' + config.WEIGHT_SAVE_PATH)
axis3.set_ylabel('IoU')
axis3.set_xlabel('Epoch')
axis3.legend(['Train', 'Test', 'Train'], loc='upper left')
# saving them off in same folder as weights and config
metrics_path = os.path.join(
os.path.split(config.WEIGHT_SAVE_PATH)[0], 'metrics.png')
print('saving figure to', metrics_path)
fig.savefig(metrics_path)
return
# n_transforms is the number of transformations to create for each image
n_transforms = 10
X, y = load_train_data(m)
# Ensure that we always use the same training and cross-validation sets
# by always using 1 as the seed for the PRNG.
np.random.seed(1)
Xtr, Xval, ytr, yval = train_test_split(X, y, train_size=0.6, test_size=0.4)
Xtr, ytr = aug.augment_dataset(Xtr, ytr, n_transforms, fixed_seeds=True)
model = model_build_conv()
model.compile(optimizer='adam',
loss='categorical_crossentropy',
metrics=[categorical_accuracy])
my_hist = History()
time_hist = TimeHistory()
# Because we are feeding in an augmented dataset using model.fit,
# the training categorical accuracy returned by the model will be
# based on the augmented training set. However, we are far more
# interested in the true training accuracy, based on predictions
# from the unaugmented training set. The for loop below is an ugly hack.
# I will replace it with a callback at some point.
train_accs = []
for E in range(epochs):
model.fit(Xtr,
ytr,
verbose=2,
callbacks=[my_hist, time_hist],
validation_data=(Xval, yval),
epochs=E + 1,
def train_fine(self):
# load coarse model
print('### LOADING SAVED MODEL AND WEIGHTS ###')
model_json = open(MODEL_FILE, 'r').read()
model = model_from_json(model_json)
model.load_weights(WEIGHTS_FILE)
# freeze training on coarse layers
for layer in model.layers:
layer.trainable = False
# modify with additional fine layers
print('### UPDATING MODEL ###')
# Input:
inputs = model.inputs[0]
# Fine 1:
# 9x9 conv, 2 stride, ReLU activation, 2x2 pool
fine_1 = Convolution2D(63, (9, 9),
padding='same',
kernel_initializer='uniform',
strides=(2, 2),
input_shape=(1,
int(self.config['IMG_ROWS'] / 2),
int(self.config['IMG_COLS'] / 2)),
name='fine_1_conv')(inputs) #XXX
fine_1 = Activation('relu', name='fine_1_relu')(fine_1)
fine_1 = MaxPooling2D(pool_size=(2, 2), name='fine_1_pool')(fine_1)
# Fine 2:
# Concatenation with Coarse 7
coarse_out = model.outputs[0]
coarse_out = Reshape((int(
self.config['IMG_ROWS'] / 8), int(self.config['IMG_COLS'] / 8), 1),
name='coarse_out_reshape')(coarse_out) #XXX
fine_2 = merge([fine_1, coarse_out],
mode='concat',
concat_axis=3,
name='fine_2_merge')
# Fine 3:
# 5x5 conv, 1 stride, ReLU activation, no pool
fine_3 = Convolution2D(64, (5, 5),
padding='same',
kernel_initializer='uniform',
strides=(1, 1),
name='fine_3_conv')(fine_2)
fine_3 = Activation('relu', name='fine_3_relu')(fine_3)
# Fine 4:
# 5x5 conv, 1 stride, linear activation, no pool
fine_4 = Convolution2D(1, (5, 5),
padding='same',
kernel_initializer='uniform',
strides=(1, 1),
name='fine_4_conv')(fine_3)
fine_4 = Activation('linear', name='fine_4_linear')(fine_4)
fine_4 = Reshape((int(
self.config['IMG_ROWS'] / 8), int(self.config['IMG_COLS'] / 8)),
name='fine_4_reshape')(fine_4) #XXX
# compile the model
print('### COMPILING MODEL ###')
model = Model(input=inputs, output=fine_4)
model.compile(loss=self.scale_invariant_error,
optimizer=SGD(lr=self.config['LEARNING_RATE'],
momentum=self.config['MOMENTUM']),
metrics=['accuracy'])
model.summary()
# save the model architecture to file
print('### SAVING MODEL ARCHITECTURE ###')
modelDir = dateTimeStr
os.mkdir(os.path.join(self.config['OUTDIR'], modelDir))
modelFile = os.path.join(
self.config['OUTDIR'], modelDir,
'depth_fine_model_{}.json'.format(dateTimeStr))
print(model.to_json(), file=open(modelFile, 'w'))
# load and preprocess the data
print('### LOADING DATA ###')
X_train, Y_train = loadData(
os.path.join(self.config['DATA_DIR'], 'train/'))
X_test, Y_test = loadData(
os.path.join(self.config['DATA_DIR'], 'test/'))
print('X_train shape:', X_train.shape)
print('Y_train shape:', Y_train.shape)
print(X_train.shape[0], 'train samples')
print(X_test.shape[0], 'test samples')
# train the model
#TODO use validation_split instead of using separate (test) data
print('### TRAINING ###')
history_cb = History()
checkpointFile = os.path.join(
self.config['OUTDIR'], modelDir,
'fine-weights-improvement-{epoch:02d}-{val_acc:.2f}.hdf5')
checkpoint_cb = ModelCheckpoint(filepath=checkpointFile,
monitor='val_loss',
verbose=1,
save_best_only=True,
save_weights_only=True,
mode='auto')
model.fit(X_train,
Y_train,
epochs=self.config['EPOCHS'],
batch_size=self.config['BATCH_SIZE'],
verbose=1,
validation_split=0.2,
callbacks=[history_cb, checkpoint_cb])
histFile = os.path.join(self.config['OUTDIR'], modelDir,
'depth_fine_hist_{}.json'.format(dateTimeStr))
# save the model weights to file
print('### SAVING TRAINED MODEL ###')
print(history_cb.history, file=open(histFile, 'w'))
weightsFile = os.path.join(
self.config['OUTDIR'], modelDir,
'depth_fine_weights_{}.h5'.format(dateTimeStr))
model.save_weights(weightsFile)
# evaluate the trained model
print('sleeping for 5 seconds...')
time.sleep(5)
print('### LOADING THE MODEL WEIGHTS ###')
model_json = open(modelFile, 'r').read()
model2 = model_from_json(model_json)
model2.load_weights(weightsFile)
model2.compile(loss=self.scale_invariant_error,
optimizer=SGD(lr=self.config['LEARNING_RATE'],
momentum=self.config['MOMENTUM']),
metrics=['accuracy'])
# evaluate the model
print('### EVALUATING ###')
score = model2.evaluate(X_test, Y_test, verbose=1)
print('Test score:', score[0])
print('Test accuracy:', score[1])
def run_experiment():
print("* experiment configurations")
print("===========================")
print("Epoch count: {}".format(HYPER_PARAMS.num_epochs))
print("Image channel: {}".format(HYPER_PARAMS.num_channel))
with file_io.FileIO(HYPER_PARAMS.xtrain_files,'rb') as bi1:
file_io.write_string_to_file('xtrain_files.hdf5',bi1.read())
with h5py.File('xtrain_files.hdf5', 'r') as f1:
xtrain = np.asarray(f1['x_train'].value)
# os.remove('xtrain_files.hdf5')
with file_io.FileIO(HYPER_PARAMS.ytrain_files,'rb') as bi2:
file_io.write_string_to_file('ytrain_files.hdf5',bi2.read())
with h5py.File('ytrain_files.hdf5', 'r') as f2:
ytrain = np.asarray(f2['y_train'].value)
# os.remove('ytrain_files.hdf5')
with file_io.FileIO(HYPER_PARAMS.xval_files,'rb') as bi3:
file_io.write_string_to_file('xval_files.hdf5',bi3.read())
with h5py.File('xval_files.hdf5', 'r') as f3:
xval = np.asarray(f3['x_val'].value)
# os.remove('xval_files.hdf5')
with file_io.FileIO(HYPER_PARAMS.yval_files,'rb') as bi4:
file_io.write_string_to_file('yval_files.hdf5',bi4.read())
with h5py.File('yval_files.hdf5', 'r') as f4:
yval = np.asarray(f4['y_val'].value)
# os.remove('yval_files.hdf5')
#ytrain = np.asarray(f['ytrain'].value)
#xval = np.asarray(f['xval'].value)
#yval = np.asarray(f['yval'].value)
# a = file_io.FileIO(HYPER_PARAMS.xtrain_files,'r')
# b = file_io.FileIO(HYPER_PARAMS.ytrain_files,'r')
# c = file_io.FileIO(HYPER_PARAMS.xval_files,'r')
# d = file_io.FileIO(HYPER_PARAMS.yval_files,'r')
# xtrain = np.load(a)
# ytrain = np.load(b)
# xval = np.load(c)
# yval = np.load(d)
# a.close()
# b.close()
# c.close()
# d.close()
print("X train shape: {}".format(xtrain.shape))
print("Y train shape: {}".format(ytrain.shape))
print("===========================")
FMT_VALMODEL_PATH ="{}_val_weights.h5"
FMT_VALMODEL_LAST_PATH = "{}_val_weights_last.h5"
FMT_VALMODEL_HIST = "{}_val_hist.csv"
PREFIX = HYPER_PARAMS.prefix
INPUT_CHANNEL = HYPER_PARAMS.num_channel
unet = model.get_unet(INPUT_CHANNEL)
# train and evaluate
model_checkpoint = ModelCheckpoint(
FMT_VALMODEL_PATH.format(PREFIX + "_{epoch:02d}"),
monitor='val_jaccard_coef_int',
save_best_only=False,
save_weights_only=True)
model_earlystop = EarlyStopping(
monitor='val_jaccard_coef_int',
patience=20,
verbose=0,
mode='max')
model_history = History()
model_board = TensorBoard(
log_dir=os.path.join(HYPER_PARAMS.job_dir, 'logs'),
histogram_freq=0,
write_graph=True,
embeddings_freq=0)
save_checkpoint_gcs = LambdaCallback(
on_epoch_end=lambda epoch, logs: copy_file_to_gcs(HYPER_PARAMS.job_dir, FMT_VALMODEL_PATH.format(PREFIX + '_' + str(format(epoch + 1, '02d')))))
unet.fit(
xtrain, ytrain,
nb_epoch=HYPER_PARAMS.num_epochs,
batch_size = HYPER_PARAMS.batch_size,
shuffle=True,
verbose=1,
validation_data=(xval, yval),
callbacks=[model_checkpoint,model_earlystop, model_history, model_board, save_checkpoint_gcs])
pd.DataFrame(model_history.history).to_csv(FMT_VALMODEL_HIST.format(PREFIX), index=False)
copy_file_to_gcs(HYPER_PARAMS.job_dir, FMT_VALMODEL_HIST.format(PREFIX))
unet.save_weights(FMT_VALMODEL_LAST_PATH.format(PREFIX))
copy_file_to_gcs(HYPER_PARAMS.job_dir, FMT_VALMODEL_LAST_PATH.format(PREFIX))
def fit(self,
env,
nb_steps,
action_repetition=1,
callbacks=None,
verbose=1,
visualize=False,
nb_max_start_steps=0,
start_step_policy=None,
log_interval=10000,
nb_max_episode_steps=None,
version=None,
custom_env=False):
"""Trains the agent on the given environment.
# Arguments
env: (`Env` instance): Environment that the agent interacts with. See [Env](#env) for details.
nb_steps (integer): Number of training steps to be performed.
action_repetition (integer): Number of times the agent repeats the same action without
observing the environment again. Setting this to a value > 1 can be useful
if a single action only has a very small effect on the environment.
callbacks (list of `keras.callbacks.Callback` or `rl.callbacks.Callback` instances):
List of callbacks to apply during training. See [callbacks](/callbacks) for details.
verbose (integer): 0 for no logging, 1 for interval logging (compare `log_interval`), 2 for episode logging
visualize (boolean): If `True`, the environment is visualized during training. However,
this is likely going to slow down training significantly and is thus intended to be
a debugging instrument.
nb_max_start_steps (integer): Number of maximum steps that the agent performs at the beginning
of each episode using `start_step_policy`. Notice that this is an upper limit since
the exact number of steps to be performed is sampled uniformly from [0, max_start_steps]
at the beginning of each episode.
start_step_policy (`lambda observation: action`): The policy
to follow if `nb_max_start_steps` > 0. If set to `None`, a random action is performed.
log_interval (integer): If `verbose` = 1, the number of steps that are considered to be an interval.
nb_max_episode_steps (integer): Number of steps per episode that the agent performs before
automatically resetting the environment. Set to `None` if each episode should run
(potentially indefinitely) until the environment signals a terminal state.
# Returns
A `keras.callbacks.History` instance that recorded the entire training process.
"""
if not self.compiled:
raise RuntimeError(
'Your tried to fit your agent but it hasn\'t been compiled yet. Please call `compile()` before `fit()`.'
)
if action_repetition < 1:
raise ValueError('action_repetition must be >= 1, is {}'.format(
action_repetition))
self.training = True
#self.stop_training = False # https://github.com/keras-rl/keras-rl/pull/170/commits/73c073d773ade1ccf70bdcd8f96237473b206ed8
callbacks = [] if not callbacks else callbacks[:]
if verbose == 1:
callbacks += [TrainIntervalLogger(interval=log_interval)]
elif verbose > 1:
callbacks += [TrainEpisodeLogger()]
if visualize:
callbacks += [Visualizer()]
history = History() # get the history class
callbacks += [history] # Assign history to callback
callbacks = CallbackList(callbacks)
if hasattr(callbacks, 'set_model'):
callbacks.set_model(self)
else:
callbacks._set_model(self)
callbacks._set_env(env)
params = {
'nb_steps': nb_steps,
}
if hasattr(callbacks, 'set_params'):
callbacks.set_params(params)
else:
callbacks._set_params(params)
self._on_train_begin()
callbacks.on_train_begin()
episode = np.int16(0)
self.step = np.int16(0)
observation = None
episode_reward = None
episode_step = None
#self.episode_step = None # https://github.com/keras-rl/keras-rl/pull/170/commits/73c073d773ade1ccf70bdcd8f96237473b206ed8
did_abort = False
# open workbook to store result
workbook = xlwt.Workbook()
sheet = workbook.add_sheet('DQN')
sheet_step = workbook.add_sheet('step')
try:
while self.step < nb_steps:
if observation is None: # start of a new episode
callbacks.on_episode_begin(episode)
episode_step = np.int16(0)
#self.episode_step = np.int16(0) # https://github.com/keras-rl/keras-rl/pull/170/commits/73c073d773ade1ccf70bdcd8f96237473b206ed8
episode_reward = np.float32(0)
# Obtain the initial observation by resetting the environment.
self.reset_states()
observation = deepcopy(env.reset())
if self.processor is not None:
observation = self.processor.process_observation(
observation)
assert observation is not None
# Perform random starts at beginning of episode and do not record them into the experience.
# This slightly changes the start position between games.
nb_random_start_steps = 0 if nb_max_start_steps == 0 else np.random.randint(
nb_max_start_steps)
for _ in range(nb_random_start_steps):
if start_step_policy is None:
action = env.action_space.sample()
else:
action = start_step_policy(observation)
if self.processor is not None:
action = self.processor.process_action(action)
callbacks.on_action_begin(action)
observation, reward, done, info = env.step(action)
observation = deepcopy(observation)
if self.processor is not None:
observation, reward, done, info = self.processor.process_step(
observation, reward, done, info)
callbacks.on_action_end(action)
if done:
warnings.warn(
'Env ended before {} random steps could be performed at the start. You should probably lower the `nb_max_start_steps` parameter.'
.format(nb_random_start_steps))
observation = deepcopy(env.reset())
if self.processor is not None:
observation = self.processor.process_observation(
observation)
break
# At this point, we expect to be fully initialized.
assert episode_reward is not None
assert episode_step is not None
#assert self.episode_step is not None # https://github.com/keras-rl/keras-rl/pull/170/commits/73c073d773ade1ccf70bdcd8f96237473b206ed8
assert observation is not None
# Run a single step.
callbacks.on_step_begin(episode_step)
#callbacks.on_step_begin(callbacks.on_step_begin(self.episode_step)) # https://github.com/keras-rl/keras-rl/pull/170/commits/73c073d773ade1ccf70bdcd8f96237473b206ed8
# This is were all of the work happens. We first perceive and compute the action
# (forward step) and then use the reward to improve (backward step).
action = self.forward(observation)
if self.processor is not None:
action = self.processor.process_action(action)
reward = np.float32(0)
accumulated_info = {}
done = False
for _ in range(action_repetition):
callbacks.on_action_begin(action)
observation, r, done, info = env.step(action)
# print(observation, r, done, info)
observation = deepcopy(observation)
if self.processor is not None:
observation, r, done, info = self.processor.process_step(
observation, r, done, info)
for key, value in info.items():
if not np.isreal(value):
continue
if key not in accumulated_info:
accumulated_info[key] = np.zeros_like(value)
accumulated_info[key] += value
callbacks.on_action_end(action)
reward += r
if done:
break
if nb_max_episode_steps and episode_step >= nb_max_episode_steps - 1:
#if nb_max_episode_steps and self.episode_step >= nb_max_episode_steps - 1:
# Force a terminal state.
done = True
if (custom_env):
metrics = self.backward(reward[0],
terminal=done) # tran's version
else:
metrics = self.backward(
reward, terminal=done) # for testing with dqn_cartpole
episode_reward += reward
if (custom_env):
step_logs = {
'action': action,
'observation': observation,
'reward': reward[0], # tran's version
'metrics': metrics,
'episode': episode,
'info': accumulated_info,
'throughput': reward[1],
}
else:
step_logs = {
'action': action,
'observation': observation,
'reward': reward, # for testing with dqn_cartpole
'metrics': metrics,
'episode': episode,
'info': accumulated_info,
}
callbacks.on_step_end(episode_step, step_logs)
episode_step += 1
#callbacks.on_step_end(self.episode_step, step_logs) # https://github.com/keras-rl/keras-rl/pull/170/commits/73c073d773ade1ccf70bdcd8f96237473b206ed8
#self.episode_step += 1 # https://github.com/keras-rl/keras-rl/pull/170/commits/73c073d773ade1ccf70bdcd8f96237473b206ed8
self.step += 1
if done:
# We are in a terminal state but the agent hasn't yet seen it. We therefore
# perform one more forward-backward call and simply ignore the action before
# resetting the environment. We need to pass in `terminal=False` here since
# the *next* state, that is the state of the newly reset environment, is
# always non-terminal by convention.
self.forward(observation)
self.backward(0., terminal=False)
# This episode is finished, report and reset.
if (custom_env):
episode_logs = {
'episode_reward':
episode_reward[0], # Only return the first value
'throughput': episode_reward[1],
#'nb_episode_steps': episode_step,
#'nb_steps': self.step,
#'loss': history['loss'],
}
else:
episode_logs = {
'episode_reward':
episode_reward, # seems to return an array
'nb_episode_steps': episode_step,
'nb_steps': self.step,
}
print("Episode Number: ", episode)
print("Episode Rewards: ", episode_reward)
#print("Episode Logs", episode_logs)
#print("Episode metrics", metrics)
print(history.history.keys())
# print("History Loss", hist.history['loss'])
# print("History Loss", hist.history['acc'])
# print("History Loss", hist.history['val_loss'])
# print("History Loss", hist.history['val_acc'])
callbacks.on_episode_end(episode, episode_logs)
#print("Episode Reward size is: ", len(episode_reward))
#print("Reward array size is: ", episode_reward)
sheet.write(episode + 1, 0, str(episode))
sheet.write(episode + 1, 1, str(episode_reward[0]))
sheet.write(episode + 1, 2, str(episode_reward[1]))
#sheet.write(episode + 1, 3, str(episode_reward[2])) # for 2
#sheet.write(episode + 1, 4, str(episode_reward[3])) # for 3
#sheet.write(episode + 1, 5, str(episode_reward[4])) # for 4
episode += 1
observation = None
#episode_step = None
self.episode_step = None # https://github.com/keras-rl/keras-rl/pull/170/commits/73c073d773ade1ccf70bdcd8f96237473b206ed8
episode_reward = None
except KeyboardInterrupt:
# We catch keyboard interrupts here so that training can be be safely aborted.
# This is so common that we've built this right into this function, which ensures that
# the `on_train_end` method is properly called.
did_abort = True
callbacks.on_train_end(logs={'did_abort': did_abort})
self._on_train_end()
file_name = 'result_v' + version + '.xls'
# if (self.enable_double_dqn):
# file_name = 'DDQN_' + file_name
# if (self.enable_dueling_network):
# file_name = 'Dueling_' + file_name
workbook.save('../results/' + file_name)
return history
model.add(Dense(512, activation='relu'))
model.add(Dropout(0.2))
model.add(Dense(30))
return model
X_train, y_train = data_loader()
epochs = 60
batch_size = 64
model = the_model()
hist = History()
checkpointer = ModelCheckpoint(filepath='checkpoint1.hdf5',
verbose=1,
save_best_only=True)
model.compile(optimizer='adam',
loss='mean_squared_error',
metrics=['accuracy'])
model_fit = model.fit(X_train,
y_train,
validation_split=0.2,
epochs=epochs,
batch_size=batch_size,
callbacks=[checkpointer, hist],
def train_and_predict():
print('[{}] Loading and preprocessing train data...'.format(str(datetime.datetime.now())))
imgs_train, imgs_mask_train, train_ids = load_train_data()
imgs_train = preprocess(imgs_train)
imgs_mask_train = preprocess(imgs_mask_train)
imgs_train = imgs_train.astype('float32')
print('[{}] Creating validation set...'.format(str(datetime.datetime.now())))
# X_train = imgs_train
# y_train = imgs_mask_train
X_train, X_val, y_train, y_val = _train_val_split(imgs_train, imgs_mask_train)
# print('[{}] Getting extra data...'.format(str(datetime.datetime.now())))
# extra_x, extra_y = extra_data()
#
# X_train = np.vstack([X_train, extra_x[:4000, :, :, :]])
# X_val = np.vstack([X_val, extra_x[4000:, :, :, :]])
datagen = image_generator_xy.ImageDataGenerator(
featurewise_center=False,
featurewise_std_normalization=False,
rotation_range=10,
width_shift_range=0.1,
height_shift_range=0.1,
# zoom_range=0.1,
# # channel_shift_range=30,
# shear_range=5,
# # zca_whitening=True,
horizontal_flip=True,
vertical_flip=True
)
mean = np.mean(X_train) # mean for data centering
X_train -= mean
X_train /= 255 # We can probably live without this.
# X_test -= mean
# X_test /= 255 # We can probably live without this.
X_val -= mean
X_val /= 255 # We can probably live without this.
y_train = (y_train.astype(np.float32) / 255).astype(int).astype(float) # scale masks to [0, 1]
# y_test = (y_test.astype(np.float32) / 255).astype(int).astype(float) # scale masks to [0, 1]
y_val = (y_val.astype(np.float32) / 255).astype(int).astype(float) # scale masks to [0, 1]
# y_train = np.vstack([y_train, extra_y[:4000, :, :, :]]).astype(int).astype(float)
# y_val = np.vstack([y_val, extra_y[4000:, :, :, :]]).astype(int).astype(float)
print
print '[{}] Num train non zero masks...'.format(np.mean((np.mean(y_train, (2, 3)) > 0).astype(int).flatten()))
print '[{}] Num val non zero masks...'.format(np.mean((np.mean(y_val, (2, 3)) > 0).astype(int).flatten()))
# print '[{}] Num test non zero masks...'.format(np.mean((np.mean(y_test, (2, 3)) > 0).astype(int).flatten()))
print('[{}] Creating and compiling model...'.format(str(datetime.datetime.now())))
# model = get_unet4()
model = vgg_fcn()
# model_checkpoint = ModelCheckpoint('unet.hdf5', monitor='loss', save_best_only=True)
print('[{}] Fitting generator...'.format(str(datetime.datetime.now())))
history = History()
datagen.fit(X_train)
print('[{}] Fitting model...'.format(str(datetime.datetime.now())))
batch_size = 16
nb_epoch = 20
model.compile(optimizer=Nadam(lr=1e-3), loss=dice_coef_loss,
metrics=[dice_coef, dice_coef_spec, 'binary_crossentropy'])
model.fit_generator(datagen.flow(X_train,
y_train,
batch_size=batch_size,
shuffle=True),
nb_epoch=nb_epoch,
verbose=1,
validation_data=(X_val, y_val),
samples_per_epoch=len(X_train),
callbacks=[history],
# shuffle=True
)
now = datetime.datetime.now()
suffix = str(now.strftime("%Y-%m-%d-%H-%M"))
save_model(model, "{batch}_{epoch}_{suffix}".format(batch=batch_size, epoch=nb_epoch, suffix=suffix))
print('[{data}] Saving model. Suffix = {suffix}'.format(data=str(datetime.datetime.now()), suffix=suffix))
model.compile(optimizer=Nadam(lr=1e-4), loss=dice_coef_loss,
metrics=[dice_coef, dice_coef_spec, 'binary_crossentropy'])
model.fit_generator(datagen.flow(X_train,
y_train,
batch_size=batch_size,
shuffle=True),
nb_epoch=nb_epoch,
verbose=1,
validation_data=(X_val, y_val),
samples_per_epoch=len(X_train),
callbacks=[history],
# shuffle=True
)
now = datetime.datetime.now()
suffix = str(now.strftime("%Y-%m-%d-%H-%M"))
save_model(model, "{batch}_{epoch}_{suffix}".format(batch=batch_size, epoch=nb_epoch, suffix=suffix))
print('[{data}] Saving model. Suffix = {suffix}'.format(data=str(datetime.datetime.now()), suffix=suffix))
model.compile(optimizer=Nadam(lr=1e-5), loss=dice_coef_loss,
metrics=[dice_coef, dice_coef_spec, 'binary_crossentropy'])
model.fit_generator(datagen.flow(X_train,
y_train,
batch_size=batch_size,
shuffle=True),
nb_epoch=nb_epoch,
verbose=1,
validation_data=(X_val, y_val),
samples_per_epoch=len(X_train),
callbacks=[history],
# shuffle=True
)
now = datetime.datetime.now()
suffix = str(now.strftime("%Y-%m-%d-%H-%M"))
save_model(model, "{batch}_{epoch}_{suffix}".format(batch=batch_size, epoch=nb_epoch, suffix=suffix))
print('[{data}] Saving model. Suffix = {suffix}'.format(data=str(datetime.datetime.now()), suffix=suffix))
model.compile(optimizer=Nadam(lr=1e-6), loss=dice_coef_loss,
metrics=[dice_coef, dice_coef_spec, 'binary_crossentropy'])
model.fit_generator(datagen.flow(X_train,
y_train,
batch_size=batch_size,
shuffle=True),
nb_epoch=nb_epoch,
verbose=1,
validation_data=(X_val, y_val),
samples_per_epoch=len(X_train),
callbacks=[history],
# shuffle=True
)
now = datetime.datetime.now()
suffix = str(now.strftime("%Y-%m-%d-%H-%M"))
save_model(model, "{batch}_{epoch}_{suffix}".format(batch=batch_size, epoch=nb_epoch, suffix=suffix))
print
print('[{}] Loading and preprocessing test data...'.format(str(datetime.datetime.now())))
imgs_test, imgs_id_test = load_test_data()
imgs_test = preprocess(imgs_test)
imgs_test = imgs_test.astype('float32')
imgs_test -= mean
imgs_test /= 255
print('[{}] Predicting masks on test data...'.format(str(datetime.datetime.now())))
imgs_mask_test = model.predict(imgs_test, verbose=1)
np.save('masks/imgs_mask_test_{suffix}.npy'.format(suffix=suffix), imgs_mask_test)
suffix = str(now.strftime("%Y-%m-%d-%H-%M"))
print '[{}] Saving history'.format(str(datetime.datetime.now()))
save_history(history, suffix)
val_prediction = model.predict(X_val).astype(int).astype(float)
print 'binarized_prediction on val = ', dice_coef_np(y_val, val_prediction)
def createModel(X_train, y_train, X_test, y_test, input_shape):
'''
This creates a sequential model from the Keras Library to try a simple approach to creating DNNs
This will not be needed for the TAs grading this project. The below Code is only for the 13 Layer Network
Which is already trained and stored as an h5 file in the models directory. The configuration for every
network is in models/configs/
This function will rely heavily on Keras -- specficially it's sequential model class.
'''
#This is an example code for my Custom 10 Layer Network
vgg13model = Sequential([
Conv2D(32, (3, 3),
input_shape=input_shape,
padding='same',
activation='relu',
data_format='channels_last'),
Conv2D(32, (3, 3), activation='relu', padding='same'),
Conv2D(32, (3, 3), activation='relu', padding='same'),
MaxPooling2D(pool_size=(2, 2), strides=(2, 2)),
# Dropout(.25),
# # Conv2D(16, (3, 3), activation='relu', padding='same'),
# # Conv2D(16, (3, 3), activation='relu', padding='same', ),
# # Conv2D(16, (3, 3), activation='relu', padding='same', ),
# # MaxPooling2D(pool_size=(2, 2), strides=(2, 2)),
# Conv2D(6, (3, 3), activation='relu', padding='same', ),
# Conv2D(6, (3, 3), activation='relu', padding='same', ),
# MaxPooling2D(pool_size=(2, 2), strides=(2, 2)),
# Dropout(.25),
#
# Conv2D(8, (3, 3), activation='relu', padding='same', ),
# Conv2D(8, (3, 3), activation='relu', padding='same', ),
# Conv2D(8, (3, 3), activation='relu', padding='same', ),
# MaxPooling2D(pool_size=(2, 2), strides=(2, 2)),
# Dropout(.5),
Conv2D(
64,
(3, 3),
activation='relu',
padding='same',
),
Conv2D(
64,
(3, 3),
activation='relu',
padding='same',
),
Conv2D(
64,
(3, 3),
activation='relu',
padding='same',
),
Conv2D(
64,
(3, 3),
activation='relu',
padding='same',
),
MaxPooling2D(pool_size=(2, 2), strides=(2, 2)),
Flatten(),
Dense(4096, activation='relu', name='fc1'),
Dense(4096, activation='relu', name='fc2'),
Dense(10, activation='softmax', name='predictions')
])
#This is example code for my vgg16 style implementation
# vgg16model = Sequential([
# Conv2D(32, (3, 3), input_shape=input_shape, padding='same', activation='relu', data_format='channels_last'),
# Conv2D(32, (3, 3), activation='relu', padding='same'),
# MaxPooling2D(pool_size=(2, 2), strides=(2, 2)),
# Dropout(.25),
#
# Conv2D(64, (3, 3), activation='relu', padding='same'),
# Conv2D(64, (3, 3), activation='relu', padding='same', ),
# MaxPooling2D(pool_size=(2, 2), strides=(2, 2)),
# Dropout(.5),
#
# Conv2D(128, (3, 3), activation='relu', padding='same', ),
# Conv2D(128, (3, 3), activation='relu', padding='same', ),
# Conv2D(64, (3, 3), activation='relu', padding='same', ),
# MaxPooling2D(pool_size=(2, 2), strides=(2, 2)),
# # Dropout(.5),
# Conv2D(256, (3, 3), activation='relu', padding='same', ),
# Conv2D(256, (3, 3), activation='relu', padding='same', ),
# Conv2D(256, (3, 3), activation='relu', padding='same', ),
# MaxPooling2D(pool_size=(2, 2), strides=(2, 2)),
# Conv2D(256, (3, 3), activation='relu', padding='same', ),
# Conv2D(256, (3, 3), activation='relu', padding='same', ),
# Conv2D(256, (3, 3), activation='relu', padding='same', ),
# MaxPooling2D(pool_size=(2, 2), strides=(2, 2)),
# Dropout(.5),
# Flatten(),
# Dense(256, activation='relu', name='fc1'),
# Dense(256, activation='relu', name='fc2'),
# Dense(10, activation='softmax', name='predictions')
# ])
sgd = SGD(lr=0.15, decay=1e-6, momentum=0.9, nesterov=True)
vgg13model.compile(optimizer='adam',
loss='categorical_crossentropy',
metrics=['accuracy'])
datagen = ImageDataGenerator(featurewise_center=True,
featurewise_std_normalization=True,
rotation_range=180,
width_shift_range=0.2,
height_shift_range=0.2,
horizontal_flip=True,
data_format='channels_last')
print('METRICS NAMES')
print(vgg13model.metrics_names)
print('-' * 100)
print('TRAINING MODEL')
history = History()
early_stop = keras.callbacks.EarlyStopping(monitor='loss',
min_delta=0,
patience=2,
verbose=0,
mode='auto')
#model settings
callbacks = [history, early_stop]
epochs = 30
batch_size = 128
print('X_Train shape {}'.format(X_train.shape[0]))
# #
model_history = vgg13model.fit_generator(
datagen.flow(X_train, y_train, batch_size=batch_size),
steps_per_epoch=int(X_train.shape[0] / batch_size),
verbose=1,
epochs=epochs,
callbacks=callbacks,
shuffle=True,
)
# model_history = vgg13model.fit(X_train, y_train, epochs=epochs, batch_size=batch_size, callbacks=callbacks)
#saving model
filename = 'models/vgg13_adam_datagen_' + str(epochs) + '_' + str(
batch_size)
vgg13model.save(filename)
print('-' * 100)
print('SCORING MODEL')
score = vgg13model.evaluate(X_test, y_test, batch_size=64)
print(vgg13model.metrics_names)
print(score)
return vgg13model, model_history, score
input_img = Input(shape=(83,))
model = Dense(64, activation='relu')(input_img)
model = Dense(32, activation='relu')(model)
model = Dense(16, activation='relu')(model)
model = Dense(1, activation='relu')(model)
model = Model(input_img, model)
model.compile(loss=keras_loss.mse, optimizer = 'adam', metrics=['accuracy']) #, metrics=['accuracy']
return model
seed = 7
np.random.seed(seed)
scale = StandardScaler()
#train_x = scale.fit_transform(train_x)
#train_x = scale.fit_transform(train_x)
train_history = History()
#clf = KerasRegressor(build_fn=base_model, nb_epoch=100, batch_size=5,verbose=0, callbacks=[train_history], shuffle=True)
dnn = base_model()
dnn.fit(train_x,train_y,epochs=100, callbacks=[train_history], shuffle=True, validation_data=[val_x, val_y])
pred_dnn = dnn.predict(test_x)
e_nn3 = test_y - pred_dnn
## line below throws an error
#clf.score(test_y, res)
plt.figure(figsize=(15,8))
plt.plot(np.arange(0, 100), train_history.history["loss"], label="train loss")
plt.plot(np.arange(0, 100), train_history.history["val_loss"], label="val loss")
plt.title("Neural network Loss")
plt.xlabel("Epoch/Iteration")
plt.ylabel("Loss")
plt.legend(loc="upper right")
def lstmtest(allpiecelist):
## allpiecelist = ''.join(allpiecelist) #turn into a char list without space
## allpiecelist = removeSpaces(allpiecelist) #turn into a char list without space
## print(allpiecelist[1:200])
notelist = list(allpiecelist)
print("length of the char: ",len(notelist))
#fix the random number seed to ensure the results are reproducible.
np.random.seed(7)
## #change the 2d list to np array and flatten into 1d
## allpiecelist = flatten(allpiecelist)
## char = sort_and_deduplicate(allpiecelist)
#normalize the dataset
#create mapping of unique chars to integers
sortedlist = sorted(list(set(notelist)))
## sortedlist.remove(" ")
## print(sortedlist)
## chars = sorted(list(set(notelist)))
chars = sortedlist
print("chars:" ,chars) #total piano note range
encoding = {c: i for i, c in enumerate(chars)}
decoding = {i: c for i, c in enumerate(chars)}
## char_to_int = dict((c, i) for i, c in enumerate(chars))
n_chars = len(notelist)
n_vocab = len(chars)
print("Our file contains {0} unique characters.".format(len(chars)))
## print ("Total Characters: ", n_chars) #overall notelist size
## print ("Total Vocab: ", n_vocab) #all the indentitical notes
#convert the characters to integers using lookup table
seq_length =150 #sentence length
skip = 1 # -----?
dataX = []
dataY = []
#chop the data by sequence length
for i in range(0, len(allpiecelist) - seq_length, skip):
seq_in = notelist[i:i + seq_length]
seq_out = notelist[i + seq_length]
dataX.append([encoding[char] for char in seq_in])
dataY.append(encoding[seq_out])
n_patterns = len(dataX) #number of sequences
print("Sliced the input file into {0} sequenes of length {1}".format(n_patterns, seq_length))
#vectorize the x and y:
## #approach 1 # reshape X to be [samples, time steps, features]
## X = np.reshape(dataX, (n_patterns, seq_length, 1))
## # normalize
## X = X / float(n_vocab)
## # one hot encode the output variable
## y = np_utils.to_categorical(dataY)
##
#approach 2
print("len",len(chars))
print("vectorize x y ...")
#slice the data into x and y with arbitrary overlapping sequences
#the len of slice of the data, the predefined length, the total num of chars
X = np.zeros((len(dataX), seq_length, len(chars)) ) #, dtype=np.bool) #filled with boolean falses
y = np.zeros((len(dataX), len(chars)) ) #, dtype=np.bool)
#fill the np array
for i, sequence in enumerate(dataX):
for t, encoded_char in enumerate(sequence):
X[i, t, encoded_char] = 1
y[i, dataY[i]] = 1
#double check the vectorized data before training
print("Sanity check y. Dimension: {0} # Sentences: {1} Characters in file: {2}".format(y.shape, n_patterns, len(chars)))
print("Sanity check X. Dimension: {0} Sentence length: {1}".format(X.shape, seq_length))
## print(X[1])
#define the lstm model
#return either sequences (return_sequences=True) or a matrix.
model = Sequential()
model.add(LSTM(512, input_shape=(seq_length, len(chars)) )) #returning sequence
model.add(Dropout(0.5)) #probaility
#add different layers
## model.add(LSTM(256/len(chars), input_shape=(X.shape)))
## model.add(Dropout(0.3))
## model.add(LSTM(256, input_shape=(seq_length, len(chars))))
#add the regularizers
model.add(Dense(len(chars), activation='softmax', kernel_regularizer=keras.regularizers.l2(0.010)))
model.compile(loss='categorical_crossentropy', optimizer='adam')
#output the architecture in a different file so that it can be loaded seperately
architecture = model.to_yaml()
with open('model_regularizer_v2.yaml', 'a') as model_file:
model_file.write(architecture)
#define the checkpoint
filepath="weights-{epoch:02d}-{loss:.4f}.hdf5" #verbose = 1 ? 0
checkpoint = ModelCheckpoint(filepath, monitor='loss', verbose=1, save_best_only=True, mode='min')
callbacks_list = [checkpoint]
#fittttt the model!!!!
history = History() #just for debugging
epochsize = 2
history = model.fit(X, y, epochs=epochsize, batch_size=254, callbacks=callbacks_list)
#for debugging
## layer = Dense(Dense(y.shape[1], activation='softmax'))
## print("layer: ", layer.get_weights())
## print("history: ",history.history.keys())
## print("loss: ",history.history['loss'])
lossnum = history.history['loss'][0]
lossnum = "%.4f" % lossnum
epochsize = "{:02d}".format(epochsize)
opt = keras.optimizers.Adam(lr=lr)
#------------------------Model_ Compile--------------------------------------
# model = multi_gpu_model(model, gpus=gpus) # for multi-gpu power 9
model.compile(optimizer=opt,
loss='categorical_crossentropy',
metrics=['accuracy'])
#-------------------------------- Define checkpoint and History-----------
checkpoint = ModelCheckpoint(filename + '_' + h5_name,
monitor='val_acc',
verbose=1,
save_best_only=True,
save_weights_only=False,
mode='auto',
period=1)
callbacks_list = [checkpoint, History()]
# -----------------------------Training--------------------------------------------
hist = model.fit(x_train,
y_train,
batch_size=batch_size,
epochs=epochs,
validation_data=(x_val, y_val),
callbacks=callbacks_list,
verbose=1)
# --------------------------Logs of loss and acc---------------------------------
train_loss = hist.history['loss']
val_loss = hist.history['val_loss']
train_acc = hist.history['acc']
val_acc = hist.history['val_acc']
xc = range(epochs)
def training_round(round_name, n_of_epochs, markers = [], context = {'loss_hist': []}):
print('=' * 50)
print('Preparing the dataset...')
X, y, pos_seq_count = prepare_dataset(markers=markers)
print('Dataset size:', len(X), 'out of', pos_seq_count, 'possible sequences')
history = History()
loss_hist = context['loss_hist']
for iteration in range(1, n_of_epochs + 1):
print()
print('-' * 50)
print('Iteration', iteration, 'of', n_of_epochs, '[' + round_name + ']')
#model.fit_generator(generator=batch_generator(X, y, batch_size), samples_per_epoch=X.shape[0], nb_epoch=1, verbose=2, callbacks=[history])
model.fit_generator(generator=batch_generator(X, y, batch_size), samples_per_epoch=len(X), nb_epoch=1, verbose=2, callbacks=[history])
start_index = random.randint(0, len(text_as_idx) - input_len - 1)
initial_sentence = text_as_idx[start_index: start_index + input_len]
print()
print('---- max:')
sentence = list(initial_sentence)
sys.stdout.write(idx_arr2str(sentence) + ' ===> ')
sys.stdout.flush()
most_probable = []
most_probable2 = []
for i in range(sample_output_len):
x = extract_input([sentence])
preds = model.predict(x, verbose=0)[0]
generated_w_idx = np.argmax(preds)
sys.stdout.write(' ' + idx_to_word[generated_w_idx])
sys.stdout.flush()
sentence = np.append(sentence[1:], generated_w_idx)
most_probable.append([ (idx_to_word[p[0]], float('%.4f'%(p[1]))) for p in sorted(enumerate(preds), key=lambda p: p[1], reverse=1)[:candidate_out_size] ])
most_probable2.extend([ idx_to_word[p[0]] for p in sorted(enumerate(preds), key=lambda p: p[1], reverse=1)[:candidate_out_size*4] ])
print()
for mp in most_probable:
print(mp)
print()
print(' '.join(most_probable2))
for temperature in [0.2, 0.5, 1.0, 1.2]:
print('---- temperature: ', temperature)
sentence = list(initial_sentence)
sys.stdout.write(idx_arr2str(sentence) + ' ===> ')
sys.stdout.flush()
generated = ''
for i in range(sample_output_len):
x = extract_input([sentence])
preds = model.predict(x, verbose=0)[0]
generated_w_idx = sample(preds, temperature)
sys.stdout.write(' ' + idx_to_word[generated_w_idx])
sys.stdout.flush()
sentence = np.append(sentence[1:], generated_w_idx)
generated += ' ' + idx_to_word[generated_w_idx]
print()
print()
if draw_loss_graph:
# draw the loss graph
loss_hist.append(history.history['loss'][0])
plt.figure(figsize=(20, 6))
plt.plot(loss_hist)
plt.savefig('loss.png', dpi=150)
plt.close()
if save_the_model: #1 == iteration or 0 == iteration%100:
# save the model
model_files_prefix = round_name + '-iter'
model.save(model_files_prefix + '.h5')
with open(model_files_prefix + '-vocab.pickle', "wb" ) as f:
pickle.dump(vocab, f)
return {
'loss_hist': loss_hist
}
def fit(self,
x,
y,
batch_size=None,
nsteps=None,
epochs=1,
verbose=1,
callbacks=None,
validation_data=None):
assert self.is_compiled, "Must compile model first"
assert epochs > 0
x = x if type(x) is list else [x]
y = y if type(y) is list else [y]
if nsteps is None:
total_len = len(y[0]) if type(y) is list else len(y)
nsteps = total_len // batch_size
# BaseLogger should always be the first metric since it computes the stats on epoch end
base_logger = BaseLogger(
stateful_metrics=["val_%s" % m for m in self.metrics_name] +
['val_loss', 'size'])
base_logger_params = {'metrics': ['loss'] + self.metrics_name}
if validation_data:
base_logger_params['metrics'] += [
'val_%s' % m for m in base_logger_params['metrics']
]
base_logger.set_params(base_logger_params)
hist = History()
if callbacks is None:
callbacks = [base_logger] + [hist]
elif type(callbacks) is list:
callbacks = [base_logger] + callbacks + [hist]
else:
callbacks = [base_logger] + [callbacks] + [hist]
callback_list = CallbackList(callbacks=callbacks)
callback_list.set_model(self)
callback_list.on_train_begin()
self.callbacks = callback_list
for epoch in range(epochs):
g = batchify(x, y, batch_size) if batch_size else None
t = trange(nsteps) if verbose == 1 else range(nsteps)
callback_list.on_epoch_begin(epoch)
for it in t:
x_, y_ = next(g) if g else (None, None)
batch_logs = self.train_on_batch(x_, y_)
callback_list.on_batch_end(it, batch_logs)
curr_loss = base_logger.totals['loss'] / base_logger.seen
if verbose == 1:
t.set_postfix(loss="%.4f" % curr_loss)
if verbose == 2:
if it % 1000 == 0:
print("%s %i/%i, loss=%.5f" %
(datetime.datetime.now().strftime("%H:%M:%S"),
it, nsteps, curr_loss),
flush=True)
if validation_data:
val_logs = self.evaluate(validation_data[0],
validation_data[1])
base_logger.on_batch_end(None, val_logs)
epoch_logs = {}
callback_list.on_epoch_end(epoch=epoch, logs=epoch_logs)
if verbose:
if validation_data:
to_print = ['loss'] + self.metrics_name + ['val_loss'] + [
'val_%s' % m for m in self.metrics_name
]
else:
to_print = ['loss'] + self.metrics_name
prog = ", ".join([
"%s=%.4f" % (name, hist.history[name][-1])
for name in to_print
])
print("Epoch %i, %s" % (epoch, prog), flush=True)
if self.stop_training:
break
return hist.history
model.add(Dense(nb_class))
model.add(Activation('softmax'))
ada = Adadelta(lr=0.1, rho=0.95, epsilon=1e-08)
model.compile(loss='categorical_crossentropy',
optimizer=ada,
metrics=['accuracy'])
model.summary()
callbacks = [
EarlyStopping(monitor='val_loss', patience=patience, verbose=0),
ModelCheckpoint('best_model.h5',
monitor='val_loss',
save_best_only=True,
verbose=1),
History()
]
datagen = ImageDataGenerator(width_shift_range=0.5,
height_shift_range=0.5,
rotation_range=40,
zoom_range=0.2,
horizontal_flip=True,
vertical_flip=False)
datagen.fit(train_feature)
history = model.fit_generator(datagen.flow(x=train_feature,
y=train_label,
batch_size=batch_size),
steps_per_epoch=int(
def _fit(self, adata,
condition_key, train_size=0.8,
n_epochs=300, batch_size=512,
early_stop_limit=10, lr_reducer=7,
save=True, retrain=True, verbose=3):
train_adata, valid_adata = train_test_split(adata, train_size)
if self.gene_names is None:
self.gene_names = train_adata.var_names.tolist()
else:
if set(self.gene_names).issubset(set(train_adata.var_names)):
train_adata = train_adata[:, self.gene_names]
else:
raise Exception("set of gene names in train adata are inconsistent with class' gene_names")
if set(self.gene_names).issubset(set(valid_adata.var_names)):
valid_adata = valid_adata[:, self.gene_names]
else:
raise Exception("set of gene names in valid adata are inconsistent with class' gene_names")
train_expr = train_adata.X.A if sparse.issparse(train_adata.X) else train_adata.X
valid_expr = valid_adata.X.A if sparse.issparse(valid_adata.X) else valid_adata.X
train_conditions_encoded, self.condition_encoder = label_encoder(train_adata, le=self.condition_encoder,
condition_key=condition_key)
valid_conditions_encoded, self.condition_encoder = label_encoder(valid_adata, le=self.condition_encoder,
condition_key=condition_key)
if not retrain and os.path.exists(os.path.join(self.model_path, f"{self.model_name}.h5")):
self.restore_model_weights()
return
callbacks = [
History(),
]
if verbose > 2:
callbacks.append(
LambdaCallback(on_epoch_end=lambda epoch, logs: print_progress(epoch, logs, n_epochs)))
fit_verbose = 0
else:
fit_verbose = verbose
if early_stop_limit > 0:
callbacks.append(EarlyStopping(patience=early_stop_limit, monitor='val_loss'))
if lr_reducer > 0:
callbacks.append(ReduceLROnPlateau(monitor='val_loss', patience=lr_reducer))
train_conditions_onehot = to_categorical(train_conditions_encoded, num_classes=self.n_conditions)
valid_conditions_onehot = to_categorical(valid_conditions_encoded, num_classes=self.n_conditions)
x_train = [train_expr, train_conditions_onehot, train_conditions_onehot]
x_valid = [valid_expr, valid_conditions_onehot, valid_conditions_onehot]
y_train = [train_expr, train_conditions_encoded]
y_valid = [valid_expr, valid_conditions_encoded]
self.cvae_model.fit(x=x_train,
y=y_train,
validation_data=(x_valid, y_valid),
epochs=n_epochs,
batch_size=batch_size,
verbose=fit_verbose,
callbacks=callbacks,
)
if save:
self.save(make_dir=True)
def fit(self,
env,
nb_steps,
action_repetition=1,
callbacks=None,
verbose=1,
visualize=False,
nb_max_start_steps=0,
start_step_policy=None,
log_interval=10000,
nb_max_episode_steps=None):
"""Trains the agent on the given environment.
# Arguments
env: (`Env` instance): Environment that the agent interacts with. See [Env](#env) for details.
nb_steps (integer): Number of training steps to be performed.
action_repetition (integer): Number of times the agent repeats the same action without
observing the environment again. Setting this to a value > 1 can be useful
if a single action only has a very small effect on the environment.
callbacks (list of `keras.callbacks.Callback` or `rl.callbacks.Callback` instances):
List of callbacks to apply during training. See [callbacks](/callbacks) for details.
verbose (integer): 0 for no logging, 1 for interval logging (compare `log_interval`), 2 for episode logging
visualize (boolean): If `True`, the environment is visualized during training. However,
this is likely going to slow down training significantly and is thus intended to be
a debugging instrument.
nb_max_start_steps (integer): Number of maximum steps that the agent performs at the beginning
of each episode using `start_step_policy`. Notice that this is an upper limit since
the exact number of steps to be performed is sampled uniformly from [0, max_start_steps]
at the beginning of each episode.
start_step_policy (`lambda observation: action`): The policy
to follow if `nb_max_start_steps` > 0. If set to `None`, a random action is performed.
log_interval (integer): If `verbose` = 1, the number of steps that are considered to be an interval.
nb_max_episode_steps (integer): Number of steps per episode that the agent performs before
automatically resetting the environment. Set to `None` if each episode should run
(potentially indefinitely) until the environment signals a terminal state.
# Returns
A `keras.callbacks.History` instance that recorded the entire training process.
"""
if not self.compiled:
raise RuntimeError(
'Your tried to fit your agent but it hasn\'t been compiled yet. Please call `compile()` before `fit()`.'
)
if action_repetition < 1:
raise ValueError('action_repetition must be >= 1, is {}'.format(
action_repetition))
self.training = True
callbacks = [] if not callbacks else callbacks[:]
if verbose == 1:
callbacks += [TrainIntervalLogger(interval=log_interval)]
elif verbose > 1:
callbacks += [TrainEpisodeLogger()]
if visualize:
callbacks += [Visualizer()]
history = History()
callbacks += [history]
callbacks = CallbackList(callbacks)
if hasattr(callbacks, 'set_model'):
callbacks.set_model(self)
else:
callbacks._set_model(self)
callbacks._set_env(env)
params = {
'nb_steps': nb_steps,
}
if hasattr(callbacks, 'set_params'):
callbacks.set_params(params)
else:
callbacks._set_params(params)
self._on_train_begin()
callbacks.on_train_begin()
episode = np.int16(0)
self.step = np.int16(0)
observation = None
episode_reward = None
episode_step = None
did_abort = False
try:
while self.step < nb_steps:
if observation is None: # start of a new episode
callbacks.on_episode_begin(episode)
episode_step = np.int16(0)
episode_reward = np.float32(0)
# Obtain the initial observation by resetting the environment.
self.reset_states()
observation = deepcopy(env.reset())
if self.processor is not None:
observation = self.processor.process_observation(
observation)
assert observation is not None
# Perform random starts at beginning of episode and do not record them into the experience.
# This slightly changes the start position between games.
nb_random_start_steps = 0 if nb_max_start_steps == 0 else np.random.randint(
nb_max_start_steps)
for _ in range(nb_random_start_steps):
if start_step_policy is None:
action = env.action_space.sample()
else:
action = start_step_policy(observation)
if self.processor is not None:
action = self.processor.process_action(action)
callbacks.on_action_begin(action)
observation, reward, done, info = env.step(action)
observation = deepcopy(observation)
if self.processor is not None:
observation, reward, done, info = self.processor.process_step(
observation, reward, done, info)
callbacks.on_action_end(action)
if done:
warnings.warn(
'Env ended before {} random steps could be performed at the start. You should probably lower the `nb_max_start_steps` parameter.'
.format(nb_random_start_steps))
observation = deepcopy(env.reset())
if self.processor is not None:
observation = self.processor.process_observation(
observation)
break
# At this point, we expect to be fully initialized.
assert episode_reward is not None
assert episode_step is not None
assert observation is not None
# Run a single step.
callbacks.on_step_begin(episode_step)
# This is were all of the work happens. We first perceive and compute the action
# (forward step) and then use the reward to improve (backward step).
action = self.forward(observation)
if self.processor is not None:
action = self.processor.process_action(action)
reward = np.float32(0)
accumulated_info = {}
done = False
for _ in range(action_repetition):
callbacks.on_action_begin(action)
observation, r, done, info = env.step(action)
observation = deepcopy(observation)
if self.processor is not None:
observation, r, done, info = self.processor.process_step(
observation, r, done, info)
for key, value in info.items():
if not np.isreal(value):
continue
if key not in accumulated_info:
accumulated_info[key] = np.zeros_like(value)
accumulated_info[key] += value
callbacks.on_action_end(action)
reward += r
if done:
break
if nb_max_episode_steps and episode_step >= nb_max_episode_steps - 1:
# Force a terminal state.
done = True
metrics = self.backward(reward, terminal=done)
episode_reward += reward
step_logs = {
'action': action,
'observation': observation,
'reward': reward,
'metrics': metrics,
'episode': episode,
'info': accumulated_info,
}
callbacks.on_step_end(episode_step, step_logs)
episode_step += 1
self.step += 1
if done:
# We are in a terminal state but the agent hasn't yet seen it. We therefore
# perform one more forward-backward call and simply ignore the action before
# resetting the environment. We need to pass in `terminal=False` here since
# the *next* state, that is the state of the newly reset environment, is
# always non-terminal by convention.
self.forward(observation)
self.backward(0., terminal=False)
# This episode is finished, report and reset.
episode_logs = {
'episode_reward': episode_reward,
'nb_episode_steps': episode_step,
'nb_steps': self.step,
}
callbacks.on_episode_end(episode, episode_logs)
episode += 1
observation = None
episode_step = None
episode_reward = None
except KeyboardInterrupt:
# We catch keyboard interrupts here so that training can be be safely aborted.
# This is so common that we've built this right into this function, which ensures that
# the `on_train_end` method is properly called.
did_abort = True
callbacks.on_train_end(logs={'did_abort': did_abort})
self._on_train_end()
return history
def process_neural_network(self, max_len, g):
self.num_params = 7
self.nn = None
models = list()
l = list()
params = self.get_best_models_params_CNN()
class_weight_val = class_weight.compute_class_weight(
'balanced', np.unique(self.y_all), self.y_all)
class_weight_dictionary = {
0: class_weight_val[0],
1: class_weight_val[1],
2: class_weight_val[2]
}
for combination in params:
# self.nn = TweetSentimentInceptionV2_3x3(max_len, g)
self.nn = TweetSentimentInceptionV2_5x5(max_len, g)
# self.nn = TweetSentimentInceptionV2_5x5_Multi(max_len, g)
# self.nn = TweetSentimentInceptionV2_3x3_Multi(max_len, g)
file_name = str(
self.route_files) + "/model" + str(combination).replace(
" ", "") + ".txt"
log = open(file_name, "a+")
start_time_comb = datetime.now()
log.write("Start time: " + str(start_time_comb) + "\n")
log.write("COMBINATION: " + str(combination) + "\n")
l = list(combination)
self.nn.build(filters=l[3], dropout=l[4], dense_units=l[5])
self.nn.summary()
# Assign the parameters agree the optimizer to use
params_compile = {}
if l[6] == 'RMSPROP':
rmsprop = RMSprop(lr=l[0], rho=0.9, epsilon=1e-06)
params_compile['optimizer'] = rmsprop
elif l[6] == 'ADAM':
adam = Adam(lr=l[0], beta_1=0.9, beta_2=0.999)
params_compile['optimizer'] = adam
elif l[6] == 'ADADELTA':
adaDelta = Adadelta(lr=l[0],
rho=0.95,
epsilon=1e-08,
decay=0.0)
params_compile['optimizer'] = adaDelta
else:
print(
"OPTIMIZADOR: El optimizador a crear no esta en lista...")
self.nn.compile(
loss="categorical_crossentropy",
metrics=['accuracy', precision, recall, f1, fprate],
**params_compile)
history = History()
self.nn.fit(self.x_train,
self.y_train,
epochs=l[1],
batch_size=l[2],
callbacks=[history],
class_weight=class_weight_dictionary)
predicted = self.nn.predict(self.x_valid)
predicted = np.argmax(predicted, axis=1)
# Getting metrics
acc = accuracy(self.y_valid, predicted)
c_matrix = confusion_matrix(self.y_valid, predicted)
track = ("Confusion matrix : \n{}\n"
"Model accuracy: {}\n").format(c_matrix, acc)
prec_1, recall_1, f1_1, spec_1, track = self.calculate_cm_metrics(
c_matrix, track)
model = [
acc, # Accuracy
prec_1, # Precision
recall_1, # Recall
f1_1, # F1 Score
spec_1, # Specificity
file_name,
'NO'
]
# SAVE MODEL
json_route = self.route_files + "/model" + str(
combination).replace(" ", "") + ".json"
h5_route = self.route_files + "/model" + str(combination).replace(
" ", "") + ".h5"
self.nn.save_model(json_route, h5_route)
print("Saved model to disk")
models.append(model)
models = sorted(models, key=itemgetter(3, 2, 1))
KerasBack.clear_session()
log.write(track)
log.write(("\nExecution time: {} minutes".format(
((datetime.now() - start_time_comb).total_seconds()) / 60)))
log.write(("\nFinish time: " + str(datetime.now())))
log.close()
return models
def train_coarse(self):
# Input:
#TODO check and enforce self.config['IMG_ROWS'], self.config['IMG_COLS'] are even
inputs = Input(shape=(int(self.config['IMG_ROWS'] / 2),
int(self.config['IMG_COLS'] / 2), 3))
# Coarse 1:
# 11x11 conv, 4 stride, ReLU activation, 2x2 pool
coarse_1 = Convolution2D(96, (11, 11),
strides=(4, 4),
padding='same',
kernel_initializer='uniform',
input_shape=(1, self.config['IMG_ROWS'] / 2,
self.config['IMG_COLS'] / 2),
name='coarse_1')(inputs)
coarse_1 = Activation('relu')(coarse_1)
coarse_1 = MaxPooling2D(pool_size=(2, 2))(coarse_1)
# Coarse 2:
# 5x5 conv, 1 stride, ReLU activation, 2x2 pool
coarse_2 = Convolution2D(256, (5, 5),
padding='same',
kernel_initializer='uniform',
name='coarse_2')(coarse_1)
coarse_2 = Activation('relu')(coarse_2)
coarse_2 = MaxPooling2D(pool_size=(2, 2))(coarse_2)
# Coarse 3:
# 3x3 conv, 1 stride, ReLU activation, no pool
coarse_3 = Convolution2D(384, (3, 3),
padding='same',
kernel_initializer='uniform',
name='coarse_3')(coarse_2)
coarse_3 = Activation('relu')(coarse_3)
# Coarse 4:
# 3x3 conv, 1 stride, ReLU activation, no pool
coarse_4 = Convolution2D(384, (3, 3),
padding='same',
kernel_initializer='uniform',
name='coarse_4')(coarse_3)
coarse_4 = Activation('relu')(coarse_4)
# Coarse 5:
# 3x3 conv, 1 stride, ReLU activation, 2x2 pool?
coarse_5 = Convolution2D(256, (3, 3),
padding='same',
kernel_initializer='uniform',
name='coarse_5')(coarse_4)
coarse_5 = Activation('relu')(coarse_5)
coarse_5 = MaxPooling2D(pool_size=(2, 2))(coarse_5)
# Coarse 6:
# Fully-connected, ReLU activation, followed by dropout
coarse_6 = Flatten(name='coarse_6')(coarse_5)
coarse_6 = Dense(4096, kernel_initializer='uniform')(coarse_6)
coarse_6 = Activation('relu')(coarse_6)
coarse_6 = Dropout(0.5)(coarse_6)
# Coarse 7:
# Fully-connected, linear activation
coarse_7 = Dense((int(self.config['IMG_ROWS'] / 8)) *
(int(self.config['IMG_COLS'] / 8)),
kernel_initializer='uniform',
name='coarse_7')(coarse_6) #XXX
coarse_7 = Activation('linear')(coarse_7)
coarse_7 = Reshape((int(self.config['IMG_ROWS'] / 8),
int(self.config['IMG_COLS'] / 8)))(coarse_7) #XXX
# compile the model
#TODO compile model once and save (separate script)
print('### COMPILING MODEL ###')
model = Model(input=inputs, output=coarse_7)
model.compile(loss=self.scale_invariant_error,
optimizer=SGD(lr=self.config['LEARNING_RATE'],
momentum=self.config['MOMENTUM']),
metrics=['accuracy'])
model.summary()
# save the model architecture to file
print('### SAVING MODEL ARCHITECTURE ###')
modelDir = dateTimeStr
os.mkdir(os.path.join(self.config['OUTDIR'], modelDir))
modelFile = os.path.join(
self.config['OUTDIR'], modelDir,
'depth_coarse_model_{}.json'.format(dateTimeStr))
print(model.to_json(), file=open(modelFile, 'w'))
# load and preprocess the data
print('### LOADING DATA ###')
X_train, Y_train = loadData(
os.path.join(self.config['DATA_DIR'], 'train/'))
X_test, Y_test = loadData(
os.path.join(self.config['DATA_DIR'], 'test/'))
print('X_train shape:', X_train.shape)
print('Y_train shape:', Y_train.shape)
print(X_train.shape[0], 'train samples')
print(X_test.shape[0], 'test samples')
# train the model
#TODO use validation_split instead of using separate (test) data
print('### TRAINING ###')
history_cb = History()
checkpointFile = os.path.join(
self.config['OUTDIR'], modelDir,
'coarse-weights-improvement-{epoch:02d}-{val_acc:.2f}.hdf5')
checkpoint_cb = ModelCheckpoint(filepath=checkpointFile,
monitor='val_loss',
verbose=1,
save_best_only=True,
save_weights_only=True,
mode='auto')
model.fit(X_train,
Y_train,
epochs=self.config['EPOCHS'],
batch_size=self.config['BATCH_SIZE'],
verbose=1,
validation_split=0.2,
callbacks=[history_cb, checkpoint_cb])
histFile = os.path.join(self.config['OUTDIR'], modelDir,
'depth_coarse_hist_{}.h5'.format(dateTimeStr))
# save the model weights to file
print('### SAVING TRAINED MODEL ###')
print(history_cb.history, file=open(histFile, 'w'))
weightsFile = os.path.join(
self.config['OUTDIR'], modelDir,
'depth_coarse_weights_{}.h5'.format(dateTimeStr))
model.save_weights(weightsFile)
# evaluate the trained model
print('sleeping for 5 seconds...')
time.sleep(5)
print('### LOADING THE MODEL WEIGHTS ###')
model_json = open(modelFile, 'r').read()
model2 = model_from_json(model_json)
model2.load_weights(weightsFile)
model2.compile(loss=self.scale_invariant_error,
optimizer=SGD(lr=self.config['LEARNING_RATE'],
momentum=self.config['MOMENTUM']),
metrics=['accuracy'])
# evaluate the model
print('### EVALUATING ###')
score = model2.evaluate(X_test, Y_test, verbose=1)
print('Test score:', score[0])
print('Test accuracy:', score[1])
def fit_generator(self,
generator,
epochs=1,
validation_data=None,
callbacks=None,
verbose=True):
method = self._model.optimizer.method
x0 = self._collect_weights()
history = History()
_callbacks = [BaseLogger(stateful_metrics=self._model.metrics_names)]
_callbacks += (callbacks or []) + [history]
callback_list = CallbackList(_callbacks)
callback_list.set_model(self._model)
callback_list.set_params({
'epochs': epochs,
'verbose': False,
'metrics': list(self._model.metrics_names),
})
state = {
'epoch': 0,
'verbose': verbose,
'callbacks': callback_list,
'in_epoch': False,
'epoch_logs': {},
}
min_options = {
'maxiter': epochs,
'maxfun': epochs * 10,
'maxcor': 50,
'maxls': 50,
'ftol': np.finfo(float).eps,
'gtol': 1e-10,
'eps': 1e-8,
}
val_generator = None
if validation_data is not None:
if isinstance(validation_data, keras.utils.Sequence):
val_generator = validation_data
elif isinstance(validation_data,
tuple) and len(validation_data) == 2:
val_generator = GeneratorWrapper(*validation_data)
def on_iteration_end(xk):
cb = state['callbacks']
if val_generator is not None:
self._validate(xk, val_generator, state)
cb.on_epoch_end(state['epoch'], state['epoch_logs'])
# if state['verbose']:
# epoch_logs = state['epoch_logs']
# print('epoch: ', state['epoch'],
# ', '.join([' {0}: {1:.3e}'.format(k, v) for k, v in epoch_logs.items()]))
state['epoch'] += 1
state['in_epoch'] = False
state['epoch_logs'] = {}
callback_list.on_train_begin()
result = minimize(self._fun_generator,
x0,
method=method,
jac=True,
options=min_options,
callback=on_iteration_end,
args=(generator, state))
self._update_weights(result['x'])
callback_list.on_train_end()
return history
def run(self):
if self.check_parameters() == False:
raise IndexError(
'Parameters for LSTM is wrong, check out_class_type')
################################################################################
self.paras.save_folder = self.get_save_directory()
print('Save Directory: ', self.paras.save_folder)
################################################################################
featureDropForTraining = ['label']
# get data
df, df_valid, df_lately, df_all = self.GetStockData_PriceVolume()
print('df len:', len(df))
print('df_valid len:', len(df_valid))
print('df_lately len:', len(df_lately))
print('df_all len:', len(df_all))
# preprocessing
X, y, scaler = self.preprocessing_data(df,
featureDropForTraining,
with_label_proc=True)
X_valid, y_valid, scaler_valid = self.preprocessing_data(
df_valid, featureDropForTraining, with_label_proc=True)
X_lately, y_lately, scaler_lately = self.preprocessing_data(
df_lately, featureDropForTraining, with_label_proc=False)
# cross validation
X_train, X_test, y_train, y_test = train_test_split(X,
y,
test_size=0.2)
print('Train shape X:', X_train.shape, ',y:', y_train.shape)
print('Test shape X:', X_test.shape, ',y:', y_test.shape)
# reshape input data to LSTM model
X, y = self.reshape_input(X, y)
X_train, y_train = self.reshape_input(X_train, y_train)
X_test, y_test = self.reshape_input(X_test, y_test)
X_valid, y_valid = self.reshape_input(X_valid, y_valid)
X_lately, y_lately = self.reshape_input(X_lately, y_lately)
print('After reshape X_train shape:', X_train.shape)
print('After reshape y_train shape:', y_train.shape)
# build LSTM model
history = History()
model_lstm = self.build_LSTM_model()
model_lstm.fit(
X_train,
y_train,
batch_size=self.paras.batch_size,
nb_epoch=self.paras.epoch,
validation_split=self.paras.validation_split,
# validation_data = (X_known_lately, y_known_lately),
callbacks=[history],
verbose=1)
# save model
self.save_training_model(model_lstm, 'lstm_model')
# validation test + known lately data
print(' ############## validation on test data ############## ')
mse_test, tmp, tmp2 = self.LSTM_model_predict(model_lstm, X_test,
y_test)
print(
' ############## validation on train/test lately data ############## '
)
mse_traintest, tmp, tmp2 = self.LSTM_model_predict(
model_lstm, X[-self.paras.valid_len:], y[-self.paras.valid_len:])
print(' ############## validation on valid data ############## ')
mse_known_lately, df_all.loc[df_valid.index, 'actual'], df_all.loc[
df_valid.index,
'pred'] = self.LSTM_model_predict(model_lstm, X_valid, y_valid)
# predict lately data
print(' ############## validation on lately data ############## ')
mse_lately, df_all.loc[df_lately.index, 'actual'], df_all.loc[
df_lately.index,
'pred'] = self.LSTM_model_predict(model_lstm, X_lately, y_lately)
# rewrite data frame and save / update
df_all = self.save_data_frame_mse(df_all,
mses=[mse_test, mse_known_lately])
self.df = df_all
# plot training loss/ validation loss
self.plot_training_curve(history)
pd.set_option('display.max_rows', None)
print(df_all[-(self.paras.pred_len + self.paras.valid_len):])
def train(model, model_path):
EPOCHS = 100 # should be 10 or bigger number
BS = 40
if os.path.isfile(base_model):
print("load last weight from:{}".format(base_model))
model.load_weights(base_model)
model_checkpoint = ModelCheckpoint(model_path,
monitor='val_jaccard_coef_int',
save_best_only=False)
# model_checkpoint = ModelCheckpoint(
# model_save_path,
# monitor='val_jaccard_coef_int',
# save_best_only=True,
# mode='max')
model_earlystop = EarlyStopping(monitor='val_jaccard_coef_int',
patience=6,
verbose=0,
mode='max')
"""自动调整学习率"""
model_reduceLR = ReduceLROnPlateau(monitor='val_jaccard_coef_int',
factor=0.1,
patience=3,
verbose=0,
mode='max',
epsilon=0.0001,
cooldown=0,
min_lr=0)
model_history = History()
callable = [
model_checkpoint, model_earlystop, model_reduceLR, model_history
]
# callable = [model_checkpoint, model_reduceLR, model_history]
# callable = [model_checkpoint,model_earlystop, model_history]
train_set, val_set = get_train_val()
train_numb = len(train_set)
valid_numb = len(val_set)
print("the number of train data is", train_numb)
print("the number of val data is", valid_numb)
H = model.fit_generator(generator=generateData(BS, train_set),
steps_per_epoch=train_numb // BS,
epochs=EPOCHS,
verbose=1,
validation_data=generateValidData(BS, val_set),
validation_steps=valid_numb // BS,
callbacks=callable,
max_q_size=1)
#plot the training loss and accuracy
plt.style.use("ggplot")
plt.figure()
N = EPOCHS
plt.plot(np.arange(0, N), H.history["loss"], label="train_loss")
plt.plot(np.arange(0, N), H.history["val_loss"], label="val_loss")
plt.plot(np.arange(0, N), H.history["acc"], label="train_acc")
plt.plot(np.arange(0, N), H.history["val_acc"], label="val_acc")
plt.plot(np.arange(0, N),
H.history["jaccard_coef_int"],
label="train_jaccard_coef_int")
plt.plot(np.arange(0, N),
H.history["val_jaccard_coef_int"],
label="val_jaccard_coef_int")
plt.title("Training Loss and Accuracy on U-Net Satellite Seg")
plt.xlabel("Epoch #")
plt.ylabel("Loss/Accuracy")
plt.legend(loc="lower left")
fig_train_acc = ''.join([
'../../data/models/train_acc_', dict_network[FLAG_USING_NETWORK], '_',
dict_target[FLAG_TARGET_CLASS], '_jaccard.png'
])
plt.savefig(fig_train_acc)
def __init__(self,
stop_patience=10,
lr_factor=0.5,
lr_patience=1,
lr_epsilon=0.001,
lr_cooldown=4,
lr_minimum=1e-5,
outputDir=''):
self.nl_begin = newline_callbacks_begin(outputDir)
self.nl_end = newline_callbacks_end()
self.stopping = EarlyStopping(monitor='val_loss',
patience=stop_patience,
verbose=1,
mode='min')
self.reduce_lr = ReduceLROnPlateau(monitor='val_loss',
factor=lr_factor,
patience=lr_patience,
mode='min',
verbose=1,
epsilon=lr_epsilon,
cooldown=lr_cooldown,
min_lr=lr_minimum)
self.modelbestcheck = ModelCheckpoint(outputDir +
"/KERAS_check_best_model.h5",
monitor='val_loss',
verbose=1,
save_best_only=True)
self.modelbestcheckweights = ModelCheckpoint(
outputDir + "/KERAS_check_best_model_weights.h5",
monitor='val_loss',
verbose=1,
save_best_only=True,
save_weights_only=True)
self.modelcheckperiod = ModelCheckpoint(
outputDir + "/KERAS_check_model_epoch{epoch:02d}.h5",
verbose=1,
period=10)
self.modelcheck = ModelCheckpoint(outputDir +
"/KERAS_check_model_last.h5",
verbose=1)
self.modelcheckweights = ModelCheckpoint(
outputDir + "/KERAS_check_model_last_weights.h5",
verbose=1,
save_weights_only=True)
self.tb = TensorBoard(log_dir=outputDir + '/logs')
self.history = History()
self.timer = Losstimer()
self.callbacks = [
self.nl_begin, self.modelbestcheck, self.modelbestcheckweights,
self.modelcheck, self.modelcheckweights, self.modelcheckperiod,
self.reduce_lr, self.stopping, self.nl_end, self.tb, self.history,
self.timer
]
def training(model_name, dataset, learning_rate, num_epochs):
features = [] #Images
data = [] #Coordinates
history = History()
#Deleting already existing model
if Path(model_name).is_file():
print("[INFO] Deleting previous model...")
os.remove(model_name)
# Loading labels
print("[INFO] Loading labels...")
samples = json.load(open(dataset + 'labels.json'))
labels = list(samples.keys())
# Storing dataset in variables
print("[INFO] Storing data...")
for (i, label) in enumerate(labels):
image = cv2.imread(dataset + label)
features.append(util.image_to_feature_vector(image))
data.append(np.asarray(samples[label]).flatten()[0:4])
if i > 0 and i % 1000 == 0:
print("[INFO] processed {}/{}".format(i, len(labels)))
(trainData, testData, trainLabels,
testLabels) = train_test_split(features,
data,
test_size=0.25,
random_state=42)
# MODEL
model = main_model()
# TRAINING
print("[INFO] compiling model...")
#sgd = SGD(lr=learning_rate, momentum=0.9, nesterov=True)
#adam = Adam(lr = learning_rate)
model.compile(loss='mean_squared_error',
optimizer='adam',
metrics=["accuracy"])
model.summary()
model.fit(np.array(trainData),
np.array(trainLabels),
epochs=num_epochs,
batch_size=4,
verbose=1,
callbacks=[history])
# TESTING
print("[INFO] evaluating on testing set...")
(loss, accuracy) = model.evaluate(np.array(testData),
np.array(testLabels),
batch_size=128,
verbose=1)
print("[INFO] loss={:.4f}, accuracy: {:.4f}%".format(loss, accuracy * 100))
# SAVING
print("[INFO] dumping architecture and weights to file...")
model.save(model_name)
save_history(history)
def fit_dataset(self,
dataset,
steps_per_epoch=None,
batch_size=32,
epochs=1,
verbose=1,
callbacks=None):
"""Train the model on the given dataset for a given number of epochs.
Arguments
---------
dataset: Instance of `BaseDataset` that provides the data
to train on.
steps_per_epoch: int or None, number of gradient updates before
considering an epoch has passed. If None it is set
to be `len(dataset.train_data) / batch_size`.
batch_size: int, number of samples per gradient update
epochs: int, number of times to iterate `steps_per_epoch` times
verbose: {0, >0}, whether to employ the progress bar Keras
callback or not
callbacks: list of Keras callbacks to be called during training
"""
# Set steps_per_epoch properly
if steps_per_epoch is None:
steps_per_epoch = len(dataset.train_data) / batch_size
# Create the callbacks list
self.history = History()
callbacks = [BaseLogger()] + (callbacks or []) + [self.history]
if verbose > 0:
callbacks += [ProgbarLogger(count_mode="steps")]
callbacks = CallbackList(callbacks)
#TODO: Should we be making it possible to call back a different model
# than self.model.model?
callbacks.set_model(self.model.model)
callbacks.set_params({
"epochs":
epochs,
"steps":
steps_per_epoch,
"verbose":
verbose,
"do_validation":
len(dataset.test_data) > 0,
"metrics":
self._get_metric_names() +
["val_" + n for n in self._get_metric_names()]
})
# Create the sampler
sampler = self.sampler(dataset)
# Start the training loop
epoch = 0
self.model.model.stop_training = False
callbacks.on_train_begin()
while epoch < epochs:
callbacks.on_epoch_begin(epoch)
for step in range(steps_per_epoch):
batch_logs = {"batch": step, "size": batch_size}
callbacks.on_batch_begin(step, batch_logs)
# Importance sampling is done here
idxs, (x, y), w = sampler.sample(batch_size)
# Train on the sampled data
loss, metrics, scores = self.model.train_batch(x, y, w)
# Update the sampler
sampler.update(idxs, scores)
values = map(lambda x: x.mean(), [loss] + metrics)
for l, o in zip(self._get_metric_names(), values):
batch_logs[l] = o
callbacks.on_batch_end(step, batch_logs)
# Evaluate now that an epoch passed
epoch_logs = {}
if len(dataset.test_data) > 0:
val = self.model.evaluate(*dataset.test_data[:],
batch_size=batch_size)
epoch_logs = {
"val_" + l: o
for l, o in zip(self._get_metric_names(), val)
}
callbacks.on_epoch_end(epoch, epoch_logs)
if self.model.model.stop_training:
break
epoch += 1
callbacks.on_train_end()
return self.history
def train():
X_train, y_train = get_train_data()
X_test, y_test = get_valid_data()
# data generater
train_gen = ImageDataGenerator(rescale=1.0 / 255,
horizontal_flip=True,
width_shift_range=4.0 / 32.0,
height_shift_range=4.0 / 32.0)
test_gen = ImageDataGenerator(rescale=1.0 / 255)
# train_gen = ImageDataGenerator(featurewise_center=True, featurewise_std_normalization=True, zca_whitening=True, horizontal_flip=True,)
# test_gen = ImageDataGenerator(featurewise_center=True, featurewise_std_normalization=True, zca_whitening=True)
y_train = to_categorical(y_train)
y_test = to_categorical(y_test)
# load network
model = ShuffleNet_V2()
opt = SGD(0.01, momentum=0.9)
#model.compile(Adam(0.001), "categorical_crossentropy", ["accuracy"])
model.compile(optimizer=opt,
loss="categorical_crossentropy",
metrics=['accuracy'])
#model.compile(SGD(0.01, momentum = 0.9), "categorical_crossentropy", ["acc", "top_k_categorical_accuracy"])
model.summary()
# set GPU
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
session = tf.Session(config=config)
session.run(tf.global_variables_initializer())
KTF.set_session(session)
# set
batch_size = 128
scheduler = LearningRateScheduler(lr_scheduler)
hist = History()
start_time = time.time()
#model.fit_generator(train_gen.flow(X_train, y_train, batch_size, shuffle=True),
# steps_per_epoch=X_train.shape[0]//batch_size,
# validation_data=test_gen.flow(X_test, y_test, batch_size, shuffle=False),
# validation_steps=X_test.shape[0]//batch_size,
# callbacks=[scheduler, hist], max_queue_size=5, epochs=100)
model.fit_generator(train_gen.flow(X_train,
y_train,
batch_size,
shuffle=True),
steps_per_epoch=X_train.shape[0] // batch_size,
validation_data=test_gen.flow(X_test,
y_test,
batch_size,
shuffle=False),
validation_steps=X_test.shape[0] // batch_size,
callbacks=[scheduler, hist],
max_queue_size=5,
epochs=50)
elapsed = time.time() - start_time
print('training time', elapsed)
history = hist.history
history["elapsed"] = elapsed
with open("shuffle_v2_002_glp.pkl", "wb") as fp:
pickle.dump(history, fp)
def cnn_classify(train_data_cwt, uci_har_labels_train, test_data_cwt,
uci_har_labels_test, epochs):
history = History()
x_train = train_data_cwt
y_train = list(uci_har_labels_train)
x_test = test_data_cwt
y_test = list(uci_har_labels_test)
num_classes = 6
batch_size = 16
# reshape the data into a 4D tensor - (sample_number, x_img_size, y_img_size, num_channels)
# because the MNIST is greyscale, we only have a single channel - RGB colour images would have 3
input_shape = np.shape(train_data_cwt)[1:]
# convert the data to the right type
x_train = x_train.astype('float32')
x_test = x_test.astype('float32')
print("x_train shape: {}, x_test shape: {}".format(x_train.shape,
x_test.shape))
print(x_train.shape[0], 'train samples')
print(x_test.shape[0], 'test samples')
# convert class vectors to binary class matrices - this is for use in the
# categorical_crossentropy loss below
y_train = keras.utils.to_categorical(y_train, num_classes)
y_test = keras.utils.to_categorical(y_test, num_classes)
model = Sequential()
model.add(
Conv2D(32,
kernel_size=(5, 5),
strides=(1, 1),
activation='relu',
input_shape=input_shape))
model.add(MaxPooling2D(pool_size=(2, 2), strides=(2, 2)))
model.add(Conv2D(64, (5, 5), activation='relu'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Flatten())
model.add(Dense(1000, activation='relu'))
model.add(Dense(num_classes, activation='softmax'))
model.compile(loss=keras.losses.categorical_crossentropy,
optimizer=keras.optimizers.Adam(),
metrics=['accuracy'])
model.fit(x_train,
y_train,
batch_size=batch_size,
epochs=epochs,
verbose=1,
validation_data=(x_test, y_test),
callbacks=[history])
train_score = model.evaluate(x_train, y_train, verbose=0)
#print('Train loss: {}, Train accuracy: {}'.format(train_score[0], train_score[1]))
test_score = model.evaluate(x_test, y_test, verbose=0)
#print('Test loss: {}, Test accuracy: {}'.format(test_score[0], test_score[1]))
return train_score, test_score, history
rotation_range=10, # randomly rotate images in the range (degrees, 0 to 180)
zoom_range=0.1, # Randomly zoom image
width_shift_range=
0.1, # randomly shift images horizontally (fraction of total width)
height_shift_range=
0.1, # randomly shift images vertically (fraction of total height)
horizontal_flip=False, # randomly flip images
vertical_flip=False) # randomly flip images
datagen.fit(X_train)
model = HistoryManager.LoadToModel(
setModel) # 두번째 매개변수로 파일명(.h5) 입력시 이미 학습된 모델 로드 default는 새 학습
model.compile(optimizer=rmsprop,
loss='categorical_crossentropy',
metrics=['accuracy'])
History() # keras history 셋업
history = model.fit(datagen.flow(X_train, Y_train, batch_size=batch_size),
epochs=epochs,
validation_data=(X_val, Y_val),
verbose=2,
steps_per_epoch=X_train.shape[0] // batch_size,
callbacks=[learning_rate_reduction])
HistoryManager.LoggingHistory(history=history, time=time)
HistoryManager.SaveToModel(model, directory="../Mnist/models/", time=time)
pred = model.predict(test)
# 정답에 맞는 포매팅, 저장함수에 콜백으로 전달
def Submission(prediction):
def test(self, env, nb_episodes=1, action_repetition=1, callbacks=None, visualize=True,
nb_max_episode_steps=None, nb_max_start_steps=0, start_step_policy=None, verbose=1):
if not self.compiled:
raise RuntimeError('Your tried to test your agent but it hasn\'t been compiled yet. Please call `compile()` before `test()`.')
if action_repetition < 1:
raise ValueError('action_repetition must be >= 1, is {}'.format(action_repetition))
self.training = False
self.step = 0
callbacks = [] if not callbacks else callbacks[:]
if verbose >= 1:
callbacks += [TestLogger()]
if visualize:
callbacks += [Visualizer()]
history = History()
callbacks += [history]
callbacks = CallbackList(callbacks)
if hasattr(callbacks, 'set_model'):
callbacks.set_model(self)
else:
callbacks._set_model(self)
callbacks._set_env(env)
params = {
'nb_episodes': nb_episodes,
}
if hasattr(callbacks, 'set_params'):
callbacks.set_params(params)
else:
callbacks._set_params(params)
self._on_test_begin()
callbacks.on_train_begin()
for episode in range(nb_episodes):
callbacks.on_episode_begin(episode)
episode_reward = 0.
episode_step = 0
# Obtain the initial observation by resetting the environment.
self.reset_states()
observation = deepcopy(env.reset())
if self.processor is not None:
observation = self.processor.process_observation(observation)
assert observation is not None
# Perform random starts at beginning of episode and do not record them into the experience.
# This slightly changes the start position between games.
nb_random_start_steps = 0 if nb_max_start_steps == 0 else np.random.randint(nb_max_start_steps)
for _ in range(nb_random_start_steps):
if start_step_policy is None:
action = env.action_space.sample()
else:
action = start_step_policy(observation)
if self.processor is not None:
action = self.processor.process_action(action)
callbacks.on_action_begin(action)
observation, r, done, info = env.step(action)
observation = deepcopy(observation)
if self.processor is not None:
observation, r, done, info = self.processor.process_step(observation, r, done, info)
callbacks.on_action_end(action)
if done:
warnings.warn('Env ended before {} random steps could be performed at the start. You should probably lower the `nb_max_start_steps` parameter.'.format(nb_random_start_steps))
observation = deepcopy(env.reset())
if self.processor is not None:
observation = self.processor.process_observation(observation)
break
# Run the episode until we're done.
done = False
while not done:
callbacks.on_step_begin(episode_step)
oldaction = self.forward(observation)
if self.shield is not None:
if self.maze:
inp = get_input_maze(observation)
else:
inp = get_input(observation)
action_bin = to_bin(oldaction)
#sleep(0.01)
action = to_int(self.shield.move(inp[0],inp[1],inp[2],inp[3],action_bin[0],action_bin[1],action_bin[2]))
else:
action = oldaction
if self.processor is not None:
action = self.processor.process_action(action)
reward = 0.
accumulated_info = {}
for _ in range(action_repetition):
callbacks.on_action_begin(action)
observation, r, d, info = env.step(action)
observation = deepcopy(observation)
if self.processor is not None:
observation, r, d, info = self.processor.process_step(observation, r, d, info)
callbacks.on_action_end(action)
reward += r
for key, value in info.items():
if not np.isreal(value):
continue
if key not in accumulated_info:
accumulated_info[key] = np.zeros_like(value)
accumulated_info[key] += value
if d:
done = True
break
if nb_max_episode_steps and episode_step >= nb_max_episode_steps - 1:
done = True
self.backward(reward, terminal=done)
episode_reward += reward
step_logs = {
'action': action,
'observation': observation,
'reward': reward,
'episode': episode,
'info': accumulated_info,
}
callbacks.on_step_end(episode_step, step_logs)
episode_step += 1
self.step += 1
# We are in a terminal state but the agent hasn't yet seen it. We therefore
# perform one more forward-backward call and simply ignore the action before
# resetting the environment. We need to pass in `terminal=False` here since
# the *next* state, that is the state of the newly reset environment, is
# always non-terminal by convention.
self.forward(observation)
self.backward(0., terminal=False)
# Report end of episode.
episode_logs = {
'episode_reward': episode_reward,
'nb_steps': episode_step,
}
callbacks.on_episode_end(episode, episode_logs)
callbacks.on_train_end()
self._on_test_end()
return history
def on_epoch_end(self, epoch, logs={}):
History.on_epoch_end(self, epoch, logs)
record_results(self, self.model, self.location)
make_plots(self, self.model, self.location, self.name)
