def perf_test_RASTAweights():
"""
Test the performance of the RASTA weights provide by Lecoultre et al.
"""
dataset = 'RASTA'
sess = tf.Session()
set_session(sess)
tf.keras.backend.set_image_data_format('channels_last')
base_model = resnet_trained(20)
predictions = Dense(25, activation='softmax')(base_model.output)
net_finetuned = Model(inputs=base_model.input, outputs=predictions)
#net_finetuned = custom_resnet() # Ce model a 87 layers
path_to_model = os.path.join(os.sep,'media','gonthier','HDD2','output_exp','rasta_models','resnet_2017_7_31-19_9_45','model.h5')
#ce model a 107 layers
constrNet = 'LResNet50' # For Lecoutre ResNet50 version
model_name = 'Lecoutre2017'
input_name_lucid = 'input_1'
net_finetuned.load_weights(path_to_model) # ,by_name=True
net_finetuned.build((224,224,3))
print(net_finetuned.summary())
print(net_finetuned.predict(np.random.rand(1,224,224,3)))
item_name,path_to_img,default_path_imdb,classes,ext,num_classes,str_val,df_label,\
path_data,Not_on_NicolasPC = get_database(dataset)
sLength = len(df_label[item_name])
classes_vectors = df_label[classes].values
df_label_test = df_label[df_label['set']=='test']
y_test = classes_vectors[df_label['set']=='test',:]
cropCenter = False
randomCrop = False
imSize = 224
predictions = predictionFT_net(net_finetuned,df_test=df_label_test,x_col=item_name,\
y_col=classes,path_im=path_to_img,Net=constrNet,\
cropCenter=cropCenter,randomCrop=randomCrop,\
imSize=imSize)
with sess.as_default():
metrics = evaluationScoreRASTA(y_test,predictions)
top_k_accs,AP_per_class,P_per_class,R_per_class,P20_per_class,F1_per_class,acc_per_class= metrics
for k,top_k_acc in zip([1,3,5],top_k_accs):
print('Top-{0} accuracy : {1:.2f}%'.format(k,top_k_acc*100))
class MobileNetModel:
def __init__(self, data_X, data_y):
self.n_class = int(data_y.shape[0])
self.model = None
self._create_architecture(data_X, data_y)
def _create_architecture(self, data_X, data_y):
self.model = MobileNet(include_top=False,
weights=None,
input_tensor=None,
input_shape=list(
[int(_) for _ in data_X.shape[-3:]]),
pooling=None)
self.model.load_weights('./weights/mobilenet_1_0_224_tf_no_top.h5')
""" Freeze the previous layers """
for layer in self.model.layers:
layer.trainable = False
""" By Setting top to False, we need to add our own classification layers """
# The model documentation notes that this is the size of the classification block
x = GlobalAveragePooling2D()(self.model.output)
# let's add a fully-connected layer
x = Dense(1024, activation='relu')(x)
x = Dropout(x, rate=0.5)
# and a logistic layer -- let's say we have 200 classes
x = Dense(int(data_y.shape[1]),
activation='softmax',
name='predictions')(x)
# create graph of your new model
self.model = Model(inputs=self.model.inputs,
outputs=x,
name='MobileNet')
self.model.compile(optimizer=tf.train.AdamOptimizer(),
loss='categorical_crossentropy',
metrics=['accuracy', 'mean_squared_error'])
def train(self, train_generator, validation_generator):
print('Training Model')
# fits the model on batches with real-time data augmentation:
self.model.fit_generator(train_generator,
steps_per_epoch=1,
epochs=20,
validation_steps=1,
validation_data=validation_generator,
verbose=1)
def get_densenet121_model(classes=2):
def preprocess_input(img):
img[:, :, 0] = (img[:, :, 0] - 103.94) * 0.017
img[:, :, 1] = (img[:, :, 1] - 116.78) * 0.017
img[:, :, 2] = (img[:, :, 2] - 123.68) * 0.017
return img.astype(np.float32)
def decode_img(img):
img[:, :, 0] = (img[:, :, 0] / 0.017) + 103.94
img[:, :, 1] = (img[:, :, 1] / 0.017) + 116.78
img[:, :, 2] = (img[:, :, 2] / 0.017) + 123.68
return img.astype(np.uint8)
base_model = tf.keras.applications.DenseNet121(include_top=False,
classes=2)
x = base_model.output
x = GlobalAveragePooling2D()(x)
pre = Dense(classes, activation='softmax', name='fc1000')(x)
model = Model(inputs=base_model.input, outputs=pre)
model.summary()
for layer in base_model.layers:
layer.trainable = False
ckpt = './ckpt/densenet121.h5'
checkpoint = ModelCheckpoint(filepath=ckpt)
tensorboard = './log/densenet121'
tensorboard = TensorBoard(log_dir=tensorboard)
if os.path.exists(ckpt):
model.load_weights(ckpt, by_name=True)
print("load done")
else:
plot_model(model, to_file='densenet121.png')
model.compile(optimizer=tf.train.AdamOptimizer(0.001),
loss='binary_crossentropy',
metrics=['accuracy'])
return model, checkpoint, tensorboard, preprocess_input, decode_img
def get_mobilev2_model(classes=2):
def preprocess_input(img):
img = img / 128.
img = img - 1.
return img.astype(np.float32)
def decode_img(img):
img = img + 1.
img = img * 128.
return img.astype(np.uint8)
base_model = MobileNetV2(include_top=False, input_shape=(224, 224, 3))
x = base_model.output
x = GlobalAveragePooling2D()(x)
pre = Dense(classes, activation='softmax')(x)
model = Model(inputs=base_model.input, outputs=pre)
model.summary()
# 冻结这些层就无法训练
# 迁移学习，用训练好的权重，重写全连接层再进行训练
for layer in base_model.layers:
layer.trainable = False
ckpt = './ckpt/mobilev2.h5'
checkpoint = ModelCheckpoint(filepath=ckpt)
tensorboard = './log/mobilev2'
tensorboard = TensorBoard(log_dir=tensorboard)
if os.path.exists(ckpt):
model.load_weights(ckpt)
print('load done')
else:
plot_model(model, to_file='mobilev2.png')
sgd = SGD(lr=1e-2, decay=1e-6, momentum=0.9, nesterov=True)
model.compile(optimizer=sgd,
loss='binary_crossentropy',
metrics=['accuracy'])
return model, checkpoint, tensorboard, preprocess_input, decode_img
def main(arg):
directory = Path('./saved_predictions/')
directory.mkdir(exist_ok=True)
directory = Path('./saved_models/')
directory.mkdir(exist_ok=True)
directory = Path('./training_checkpoints/')
directory.mkdir(exist_ok=True)
input_yx_size = tuple(args.input_yx_size)
batch_size = args.batch_size
epochs = args.epochs
learning_rate = args.learning_rate
num_test_samples = args.num_test_samples
save_weights = args.save_weights
every = args.every
num_samples = args.num_samples
save_train_prediction = args.save_train_prediction
save_test_prediction = args.save_test_prediction
verbose = args.verbose
validation_ratio = args.validation_ratio
y_axis_len, x_axis_len = input_yx_size
decay = args.decay
decay = args.decay
load_weights = args.load_weights
y_axis_len, x_axis_len = input_yx_size
num_points = y_axis_len * x_axis_len
is_flat_channel_in = args.is_flat_channel_in
input_points = Input(shape=(num_points, 4))
x = input_points
x = Convolution1D(64, 1, activation='relu', input_shape=(num_points, 4))(x)
x = BatchNormalization()(x)
x = Convolution1D(128, 1, activation='relu')(x)
x = BatchNormalization()(x)
x = Convolution1D(512, 1, activation='relu')(x)
x = BatchNormalization()(x)
x = MaxPooling1D(pool_size=num_points)(x)
x = Dense(512, activation='relu')(x)
x = BatchNormalization()(x)
x = Dense(256, activation='relu')(x)
x = BatchNormalization()(x)
x = Dense(16,
weights=[
np.zeros([256, 16]),
np.array([1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0,
1]).astype(np.float32)
])(x)
input_T = Reshape((4, 4))(x)
# forward net
g = Lambda(mat_mul, arguments={'B': input_T})(input_points)
g = Convolution1D(64, 1, input_shape=(num_points, 3), activation='relu')(g)
g = BatchNormalization()(g)
g = Convolution1D(64, 1, input_shape=(num_points, 3), activation='relu')(g)
g = BatchNormalization()(g)
# feature transformation net
f = Convolution1D(64, 1, activation='relu')(g)
f = BatchNormalization()(f)
f = Convolution1D(128, 1, activation='relu')(f)
f = BatchNormalization()(f)
f = Convolution1D(128, 1, activation='relu')(f)
f = BatchNormalization()(f)
f = MaxPooling1D(pool_size=num_points)(f)
f = Dense(512, activation='relu')(f)
f = BatchNormalization()(f)
f = Dense(256, activation='relu')(f)
f = BatchNormalization()(f)
f = Dense(64 * 64,
weights=[
np.zeros([256, 64 * 64]),
np.eye(64).flatten().astype(np.float32)
])(f)
feature_T = Reshape((64, 64))(f)
# forward net
g = Lambda(mat_mul, arguments={'B': feature_T})(g)
seg_part1 = g
g = Convolution1D(64, 1, activation='relu')(g)
g = BatchNormalization()(g)
g = Convolution1D(32, 1, activation='relu')(g)
g = BatchNormalization()(g)
g = Convolution1D(32, 1, activation='relu')(g)
g = BatchNormalization()(g)
# global_feature
global_feature = MaxPooling1D(pool_size=num_points)(g)
global_feature = Lambda(exp_dim, arguments={'num_points':
num_points})(global_feature)
# point_net_seg
c = concatenate([seg_part1, global_feature])
""" c = Convolution1D(512, 1, activation='relu')(c)
c = BatchNormalization()(c)
c = Convolution1D(256, 1, activation='relu')(c)
c = BatchNormalization()(c)
c = Convolution1D(128, 1, activation='relu')(c)
c = BatchNormalization()(c)
c = Convolution1D(128, 1, activation='relu')(c)
c = BatchNormalization()(c) """
c = Convolution1D(256, 1, activation='relu')(c)
c = BatchNormalization()(c)
c = Convolution1D(128, 4, activation='relu', strides=4)(c)
c = BatchNormalization()(c)
c = Convolution1D(128, 4, activation='relu', strides=4)(c)
c = BatchNormalization()(c)
c = Convolution1D(128, 4, activation='relu', strides=4)(c)
c = BatchNormalization()(c)
c = Convolution1D(64, 4, activation='relu', strides=4)(c)
c = BatchNormalization()(c)
c = Convolution1D(64, 4, activation='relu', strides=4)(c)
c = BatchNormalization()(c)
c = Convolution1D(32, 1, activation='relu')(c)
c = BatchNormalization()(c)
""" c = Convolution1D(128, 4, activation='relu',strides=4)(c)
c = Convolution1D(64, 4, activation='relu',strides=4)(c)
c = Convolution1D(32, 4, activation='relu',strides=4)(c)
c = Convolution1D(16, 1, activation='relu')(c)
c = Convolution1D(1, 1, activation='relu')(c) """
#c = tf.keras.backend.squeeze(c,3);
c = CuDNNLSTM(64, return_sequences=False)(c)
#c =CuDNNLSTM(784, return_sequences=False))
#c =CuDNNLSTM(256, return_sequences=False))
#c = Reshape([16,16,1])(c)
c = Reshape([8, 8, 1])(c)
c = Conv2DTranspose(8, (3, 3),
padding="same",
activation="relu",
strides=(2, 2))(c)
c = Conv2DTranspose(8, (3, 3), padding="valid", activation="relu")(c)
#c =Dropout(0.4))
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(16, (3, 3), padding="valid", activation="relu")(c)
#c =Dropout(0.4))
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(32, (3, 3), padding="valid", activation="relu")(c)
#c =Dropout(0.4))
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(32, (3, 3), padding="valid", activation="relu")(c)
#c =Dropout(0.4))
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(32, (3, 3), padding="valid", activation="relu")(c)
#c =Dropout(0.4))
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(64, (3, 3), padding="valid", activation="relu")(c)
#c =Dropout(0.4))
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(64, (3, 3), padding="valid", activation="relu")(c)
#c =Dropout(0.4))
c = tf.keras.layers.BatchNormalization()(c)
#c =Dropout(0.4))
c = Conv2DTranspose(128, (3, 3),
padding="same",
activation="relu",
strides=(2, 2))(c)
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(128, (3, 3), padding="valid", activation="relu")(c)
#c =Dropout(0.4))
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(128, (3, 3),
padding="same",
activation="relu",
strides=(2, 2))(c)
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(128, (3, 3), padding="valid", activation="relu")(c)
c = tf.keras.layers.BatchNormalization()(c)
#c =Dropout(0.4))
#c =tf.keras.layers.BatchNormalization())
c = Conv2DTranspose(64, (3, 3), padding="same", strides=(4, 2))(c)
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(32, (3, 3), padding="valid", activation="relu")(c)
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(32, (3, 3), padding="valid", activation="relu")(c)
c = tf.keras.layers.BatchNormalization()(c)
#c =Dropout(0.4))
c = Conv2DTranspose(32, (3, 3),
padding="same",
activation="relu",
strides=(1, 1))(c)
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(32, (3, 1), padding="valid", activation="relu")(c)
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(32, (3, 1), padding="valid", activation="relu")(c)
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(16, (1, 1), padding="valid", activation="relu")(c)
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(8, (1, 1), padding="valid", activation="relu")(c)
c = tf.keras.layers.BatchNormalization()(c)
c = Conv2DTranspose(1, (1, 1), padding="valid")(c)
""" c =Conv2DTranspose(4, (1,1),padding="same",activation="relu"))
c =Conv2DTranspose(2, (1,1),padding="same",activation="relu"))
#c =Dropout(0.4))
c =Conv2DTranspose(1, (1,1),padding="same")) """
prediction = tf.keras.layers.Reshape([512, 256])(c)
""" c1 ,c2 = tf.split(c,[256,256],axis=1,name="split")
complexNum = tf.dtypes.complex(
c1,
c2,
name=None
)
complexNum =tf.signal.ifft2d(
complexNum,
name="IFFT"
)
real = tf.math.real(complexNum)
imag = tf.math.imag(complexNum)
con = concatenate([real,imag])
prediction =tf.keras.layers.Reshape([ 512, 256])(con)
"""
# define model
model = Model(inputs=input_points, outputs=prediction)
opt = tf.keras.optimizers.Adam(lr=learning_rate, decay=decay)
loss = tf.keras.losses.MeanSquaredError()
mertric = ['mse']
if args.loss is "MAE":
loss = tf.keras.losses.MeanAbsoluteError()
mertric = ['mae']
model.compile(
loss=loss,
optimizer=opt,
metrics=mertric,
)
model.summary()
if load_weights:
model.load_weights('./training_checkpoints/cp-best_loss.ckpt')
#edit data_loader.py if you want to play with data
input_ks, ground_truth = load_data(num_samples,
is_flat_channel_in=is_flat_channel_in)
input_ks = input_ks / np.max(input_ks)
checkpoint_path = "./training_checkpoints/cp-{epoch:04d}.ckpt"
checkpoint_dir = os.path.dirname(checkpoint_path)
# Create checkpoint callback
#do you want to save the model's wieghts? if so set this varaible to true
cp_callback = []
NAME = "NUFFT_NET"
tensorboard = TensorBoard(log_dir="logs/{}".format(NAME))
cp_callback.append(tensorboard)
if save_weights:
cp_callback.append(
tf.keras.callbacks.ModelCheckpoint(checkpoint_dir,
save_weights_only=True,
verbose=verbose,
period=every))
if args.is_train:
model.fit(input_ks,
ground_truth,
batch_size=batch_size,
epochs=epochs,
validation_split=validation_ratio,
callbacks=cp_callback)
if args.name_model is not "":
model.save('./saved_mdoels/' + args.name_model)
dict_name = './saved_predictions/'
#return to image size
x_axis_len = int(x_axis_len / 4)
np.random.seed(int(time()))
if save_train_prediction <= num_samples:
rand_ix = np.random.randint(0, num_samples - 1, save_train_prediction)
#kspace = np.zeros((save_train_prediction,
#y_axis_len,input_ks[rand_ix].shape[1]))
kspace = input_ks[rand_ix]
if args.save_input:
np.save("./saved_predictions/inputs.npy", input_ks[rand_ix])
ground_truth = ground_truth[rand_ix]
preds = model.predict(kspace, batch_size=save_train_prediction)
for i in range(save_train_prediction):
output = np.reshape(preds[i], (y_axis_len * 2, x_axis_len))
output = output * 255
output[np.newaxis, ...]
output_gt = ground_truth[i]
output_gt[np.newaxis, ...]
output = np.concatenate([output, output_gt], axis=0)
np.save(dict_name + 'prediction%d.npy' % (i + 1), output)
input_ks, ground_truth = load_data(
num_test_samples, 'test', is_flat_channel_in=is_flat_channel_in)
input_ks = input_ks / np.max(input_ks)
if args.is_eval:
model.evaluate(input_ks,
ground_truth,
batch_size,
verbose,
callbacks=cp_callback)
if save_test_prediction <= num_test_samples:
rand_ix = np.random.randint(0, num_test_samples - 1,
save_test_prediction)
kspace = input_ks[rand_ix]
if args.save_input:
np.save("./saved_predictions/test_inputs.npy", input_ks[rand_ix])
ground_truth = ground_truth[rand_ix]
preds = model.predict(kspace, batch_size=save_test_prediction)
for i in range(save_test_prediction):
output = np.reshape(preds[i], (y_axis_len * 2, x_axis_len))
output = output * 255
output[np.newaxis, ...]
output_gt = ground_truth[i]
output_gt[np.newaxis, ...]
output = np.concatenate([output, output_gt], axis=0)
np.save(dict_name + 'test_prediction%d.npy' % (i + 1), output)
def testDiversVaries():
#tf.keras.backend.clear_session()
#tf.reset_default_graph()
#K.set_learning_phase(0)
sess = tf.Session()
#graph = tf.get_default_graph()
#keras.backend.set_session(sess)
# IMPORTANT: models have to be loaded AFTER SETTING THE SESSION for keras!
# Otherwise, their weights will be unavailable in the threads after the session there has been set
set_session(sess)
original_model = resnet_trained(n_retrain_layers=20)
# Cela va charger un tf.keras model
base_model = resnet_trained(20)
predictions = Dense(25, activation='softmax')(base_model.output)
net_finetuned = Model(inputs=base_model.input, outputs=predictions)
net_finetuned.predict(np.random.rand(1,224,224,3))
trainable_layers_name = []
for original_layer in original_model.layers:
if original_layer.trainable:
trainable_layers_name += [original_layer.name]
#C:\media\gonthier\HDD2\output_exp\rasta_models\resnet_2017_7_31-19_9_45
path_to_model = os.path.join(os.sep,'media','gonthier','HDD2','output_exp','rasta_models','resnet_2017_7_31-19_9_45','model.h5')
constrNet = 'LResNet50' # For Lecoutre ResNet50 version
model_name = 'Lecoutre2017'
input_name_lucid = 'input_1'
tf.keras.backend.set_image_data_format('channels_last')
net_finetuned.load_weights(path_to_model,by_name=True)
net_finetuned.build((224,224,3))
net_finetuned.summary()
net_finetuned.predict(np.random.rand(1,224,224,3))
#net_finetuned = keras.models.load_model(path_to_model,compile=True)
#net_finetuned = load_model(path_to_model,compile=True)
number_of_trainable_layer = 20
#
#list_layer_index_to_print = []
#for layer in model.layers:
# trainable_l = layer.trainable
# name_l = layer.name
# if trainable_l and 'res' in name_l:
# print(name_l,trainable_l)
# num_features = tf.shape(layer.bias).eval(session=sess)[0]
# list_layer_index_to_print += [name_l,np.arange(0,num_features)]
#
#for layer in original_model.layers:
# print(layer)
# trainable_l = layer.trainable
# name_l = layer.name
# if trainable_l and 'res' in name_l:
# print(name_l,trainable_l)
# num_features = tf.shape(layer.bias).eval(session=sess)[0]
# list_layer_index_to_print += [name_l,np.arange(0,num_features)]
#list_weights,list_name_layers = get_weights_and_name_layers_forPurekerasModel(original_model)
list_weights,list_name_layers = CompNet_FT_lucidIm.get_weights_and_name_layers(original_model)
dict_layers_relative_diff,dict_layers_argsort = CompNet_FT_lucidIm.get_gap_between_weights(list_name_layers,\
list_weights,net_finetuned)
layer_considered_for_print_im = []
for layer in net_finetuned.layers:
trainable_l = layer.trainable
name_l = layer.name
print(name_l,trainable_l)
if trainable_l and (name_l in trainable_layers_name):
layer_considered_for_print_im += [name_l]
num_top = 3
list_layer_index_to_print_base_model = []
list_layer_index_to_print = []
#print(layer_considered_for_print_im)
for key in dict_layers_argsort.keys():
#print(key)
if not(key in layer_considered_for_print_im):
continue
for k in range(num_top):
topk = dict_layers_argsort[key][k]
list_layer_index_to_print += [[key,topk]]
list_layer_index_to_print_base_model += [[key,topk]]
print('list_layer_index_to_print',list_layer_index_to_print)
#dict_list_layer_index_to_print_base_model[model_name+suffix] = list_layer_index_to_print_base_model
#dict_layers_relative_diff,dict_layers_argsort = CompNet_FT_lucidIm.get_gap_between_weights(list_name_layers,\
# list_weights,model)
# For the fine-tuned model !!!
path_lucid_model = os.path.join(os.sep,'media','gonthier','HDD2','output_exp','Covdata','Lucid_model')
path = path_lucid_model
if path=='':
os.makedirs('./model', exist_ok=True)
path ='model'
else:
os.makedirs(path, exist_ok=True)
frozen_graph = lucid_utils.freeze_session(sess,
output_names=[out.op.name for out in net_finetuned.outputs])
name_pb = 'tf_graph_'+constrNet+model_name+'.pb'
#nodes_tab = [n.name for n in tf.get_default_graph().as_graph_def().node]
#print(nodes_tab)
tf.io.write_graph(frozen_graph,logdir= path,name= name_pb, as_text=False)
if platform.system()=='Windows':
output_path = os.path.join('CompModifModel',constrNet)
else:
output_path = os.path.join(os.sep,'media','gonthier','HDD2','output_exp','Covdata','CompModifModel',constrNet)
pathlib.Path(output_path).mkdir(parents=True, exist_ok=True)
matplotlib.use('Agg')
output_path_with_model = os.path.join(output_path,model_name)
pathlib.Path(output_path_with_model).mkdir(parents=True, exist_ok=True)
# global sess
# global graph
# with graph.as_default():
# set_session(sess)
# net_finetuned.predict(np.random.rand(1,224,224,3))
net_finetuned.predict(np.random.rand(1,224,224,3))
lucid_utils.print_images(model_path=path_lucid_model+'/'+name_pb,list_layer_index_to_print=list_layer_index_to_print\
,path_output=output_path_with_model,prexif_name=model_name,input_name=input_name_lucid,Net=constrNet)
# For the original one !!!
original_model.predict(np.random.rand(1,224,224,3))
#sess = keras.backend.get_session()
#sess.run()
frozen_graph = lucid_utils.freeze_session(sess,
output_names=[out.op.name for out in original_model.outputs])
name_pb = 'tf_graph_'+constrNet+'PretrainedImageNet.pb'
tf.io.write_graph(frozen_graph,logdir= path,name= name_pb, as_text=False)
lucid_utils.print_images(model_path=path_lucid_model+'/'+name_pb,list_layer_index_to_print=list_layer_index_to_print\
,path_output=output_path_with_model,prexif_name=model_name,input_name=input_name_lucid,Net=constrNet)
class GenericModel:
@staticmethod
def load_from(path):
model = GenericModel()
model.model = load_model(path)
return model
def __init__(self):
self.model = None
self.registered_callbacks = []
self.id = 'generic_model'
self.time = round(time())
self.desc = None
"""config = ConfigProto()
config.gpu_options.per_process_gpu_memory_fraction = 0.40
config.gpu_options.allow_growth = True
session = InteractiveSession(config=config)"""
def build_model(self):
img_input = Input(self.get_input_shape())
last_layer = self.model_structure(img_input)
self.model = Model(img_input, last_layer)
self.model.summary()
def compile(self,
loss_function,
metric_functions=None,
optimizer=Adam(1e-3, epsilon=1e-6)):
self.require_model_loaded()
return self.model.compile(loss=loss_function,
optimizer=optimizer,
metrics=metric_functions)
def model_structure(self, input_img):
raise NotImplementedError
def get_input_shape(self):
raise NotImplementedError
def register_std_callbacks(self,
tensorboard_logs_folder=None,
checkpoint_path=None):
self.require_model_loaded()
run_id = str(time())
if self.desc is not None:
run_id += "_" + self.desc
folder_id = os.path.join(self.id, run_id)
if tensorboard_logs_folder is not None:
self.registered_callbacks.append(
TensorBoard(log_dir=os.path.join(tensorboard_logs_folder,
folder_id),
histogram_freq=0,
write_graph=True,
write_images=True))
if checkpoint_path is not None:
store_path = os.path.join(checkpoint_path, folder_id)
if not os.path.exists(store_path):
os.makedirs(store_path)
store_path = os.path.join(
store_path, 'e{epoch:02d}-l{loss:.4f}-v{val_loss:.4f}.ckpt')
print("Storing to %s" % store_path)
self.registered_callbacks.append(
ModelCheckpoint(store_path,
monitor='val_loss',
verbose=1,
period=1,
save_best_only=False,
mode='min'))
def train_with_generator(self,
training_data_generator,
epochs,
steps_per_epoch,
validation_data=None):
self.model.fit(training_data_generator,
use_multiprocessing=True,
workers=4,
steps_per_epoch=steps_per_epoch,
callbacks=self.registered_callbacks,
epochs=epochs,
verbose=1,
**({} if validation_data is None else {
"validation_data": validation_data
}))
def require_model_loaded(self):
if self.model is None:
raise ValueError("Model is not build yet")
def load_weights(self, path):
self.require_model_loaded()
return self.model.load_weights(path)
def predict(self, batch):
self.require_model_loaded()
return self.model.predict(batch)
optimizer=optimizer)
printf("train epoch %d loss %.4f ci %.4f \n" %
(epoch, train_loss, train_ci))
printf("validating epoch %s..." % (epoch, ))
val_loss, val_ci = loop_dataset(val_inds, optimizer=None)
printf("validating epoch %d loss %.4f ci %.4f \n" %
(epoch, val_loss, val_ci))
if val_loss <= best_metric:
best_metric = val_loss
DTAModel.save_weights(os.path.join(chkpt_subdir, "DTA"), )
wait = 0
else:
wait += 1
if wait > args.patience:
break
DTAModel.load_weights(os.path.join(chkpt_subdir, "DTA"))
printf("start testing...")
test_loss, test_ci = loop_dataset(test_inds, optimizer=None)
if test_ci > best_ci:
best_ci = test_ci
best_loss = test_loss
best_it = it
printf("CV %d test loss: %.4f ci: %.4f \n" % (it, test_loss, test_ci))
printf("Best iteration in fold-5 CV: %d, Best loss: %.4f, Best CI: %.4f." %
(best_it, best_loss, best_ci))
class jyHEDModelV1(jyModelBase):
def __init__(self):
super(jyHEDModelV1, self).__init__()
self.__listLayerName = []
self.__pVisualModel = None
def structureModel(self):
Inputs = layers.Input(shape=self._inputShape, batch_size=self._iBatchSize)
Con1 = layers.Conv2D(64, (3, 3), name='Con1', activation='relu', padding='SAME', input_shape=self._inputShape, strides=1)(Inputs)
Con2 = layers.Conv2D(64, (3, 3), name='Con2', activation='relu', padding='SAME', strides=1)(Con1)
Side1 = sideBranch(Con2, 1)
MaxPooling1 = layers.MaxPooling2D((2, 2), name='MaxPooling1', strides=2, padding='SAME')(Con2)
# outputs1
Con3 = layers.Conv2D(128, (3, 3), name='Con3', activation='relu', padding='SAME', strides=1)(MaxPooling1)
Con4 = layers.Conv2D(128, (3, 3), name='Con4', activation='relu', padding='SAME', strides=1)(Con3)
Side2 = sideBranch(Con4, 2)
MaxPooling2 = layers.MaxPooling2D((2, 2), name='MaxPooling2', strides=2, padding='SAME')(Con4)
# outputs2
Con5 = layers.Conv2D(256, (3, 3), name='Con5', activation='relu', padding='SAME', strides=1)(MaxPooling2)
Con6 = layers.Conv2D(256, (3, 3), name='Con6', activation='relu', padding='SAME', strides=1)(Con5)
Con7 = layers.Conv2D(256, (3, 3), name='Con7', activation='relu', padding='SAME', strides=1)(Con6)
Side3 = sideBranch(Con7, 4)
MaxPooling3 = layers.MaxPooling2D((2, 2), name='MaxPooling3', strides=2, padding='SAME')(Con7)
# outputs3
Con8 = layers.Conv2D(512, (3, 3), name='Con8', activation='relu', padding='SAME', strides=1)(MaxPooling3)
Con9 = layers.Conv2D(512, (3, 3), name='Con9', activation='relu', padding='SAME', strides=1)(Con8)
Con10 = layers.Conv2D(512, (3, 3), name='Con10', activation='relu', padding='SAME', strides=1)(Con9)
Side4 = sideBranch(Con10, 8)
MaxPooling4 = layers.MaxPooling2D((2, 2), name='MaxPooling4', strides=2, padding='SAME')(Con10)
# outputs4
Con11 = layers.Conv2D(512, (3, 3), name='Con11', activation='relu', padding='SAME', strides=1)(MaxPooling4)
Con12 = layers.Conv2D(512, (3, 3), name='Con12', activation='relu', padding='SAME', strides=1)(Con11)
Con13 = layers.Conv2D(512, (3, 3), name='Con13', activation='relu', padding='SAME', strides=1)(Con12)
Side5 = sideBranch(Con13, 16)
Fuse = layers.Concatenate(axis=-1)([Side1, Side2, Side3, Side4, Side5])
# learn fusion weight
Fuse = layers.Conv2D(1, (1, 1), name='Fuse', padding='SAME', use_bias=False, activation=None)(Fuse)
output1 = layers.Activation('sigmoid', name='output1')(Side1)
output2 = layers.Activation('sigmoid', name='output2')(Side2)
output3 = layers.Activation('sigmoid', name='output3')(Side3)
output4 = layers.Activation('sigmoid', name='output4')(Side4)
output5 = layers.Activation('sigmoid', name='output5')(Side5)
output6 = layers.Activation('sigmoid', name='output6')(Fuse)
outputs = [output1, output2, output3, output4, output5, output6]
self._pModel = Model(inputs=Inputs, outputs=outputs)
pAdam = optimizers.adam(lr=0.0001)
self._pModel.compile(loss={
'output6': classBalancedSigmoidCrossEntropy
}, optimizer=pAdam)
# self._pModel.summary()
def startTrain(self, listDS, iMaxLen, iBatchSize):
itrTrain = tf.compat.v1.data.make_one_shot_iterator(listDS[0])
itrValid = tf.compat.v1.data.make_one_shot_iterator(listDS[1])
iStepsPerEpochTrain = int(iMaxLen[0] / iBatchSize[0])
iStepsPerEpochValid = int(iMaxLen[1] / iBatchSize[1])
self._pModel.fit(itrTrain, validation_data=itrValid, epochs=self._iEpochs,
callbacks=[self._pSaveModel, self._pTensorboard], steps_per_epoch=iStepsPerEpochTrain,
validation_steps=iStepsPerEpochValid)
def loadWeights(self, strPath):
# last = tf.train.latest_checkpoint(strPath)
# checkPoint = tf.train.load_checkpoint(strPath)
self._pModel.load_weights(strPath)
# visual model
outputs = []
for myLayer in self._pModel.layers:
self.__listLayerName.append(myLayer.name)
outputs.append(myLayer.output)
# print(self.__pModel.layers[0])
# self.__pVisualModel = Model(self.__pModel.inputs, outputs=outputs)
self.__pVisualModel = Model(self._pModel.inputs, outputs=self._pModel.outputs)
return self.__pVisualModel
def predict(self, IMG):
# pImage = open(IMG, 'rb').read()
# tensorIMG = tf.image.decode_jpeg(pImage)
pIMG = image.array_to_img(IMG)# .resize((256, 144))
tensorIMG = image.img_to_array(pIMG)
x = np.array(tensorIMG / 255.0)
# show image
iColumn = 4
# generate window
plt.figure(num='Input')
# plt.subplot(1, 1, 1)
plt.imshow(x)
# imagetest = x
x = np.expand_dims(x, axis=0)
# pyplot.imshow(x)
time1 = datetime.datetime.now()
outputs = self.__pVisualModel.predict(x)
time2 = datetime.datetime.now()
print(time2 - time1)
i = 100
listOutput = []
for i in range(len(outputs)):
outputShape = outputs[i].shape
singleOut = outputs[i].reshape(outputShape[1], outputShape[2], outputShape[3])
# singleOut *= 255
listOutput.append(singleOut)
singleOut = listOutput[-1]
singleOut[singleOut > 0.5] = 1
listOutput[-1] = singleOut
return listOutput
'''
for output in outputs:
# plt.figure(num='%s' % str(i))
outputShape = output.shape
singleOut = output.reshape(outputShape[1], outputShape[2], outputShape[3])
singleOut *= 255
if outputShape[3] == 1:
# test = x - output
# test = np.abs(test)
# return mysum
# plt.subplot(1, 1, 1)
# plt.imshow(singleOut, camp='gray')
# cv2.imwrite('D:\wyc\Projects\TrainDataSet\HED\Result/%s.jpg' % str(i), singleOut)
return singleOut
# i += 1
# plt.show()
'''
def getModelConfig(self):
return self._iBatchSize
class SSD(BaseSSD):
def __init__(self, aspect_ratios=None, image_size=None):
self.model = None
if aspect_ratios is None:
aspect_ratios = [1.]
self.aspect_ratios = aspect_ratios
self.num_boxes = len(aspect_ratios) + 1 if 1. in aspect_ratios else 0
self.create_head_layers()
self.build(input_shape=(image_size, image_size, 3))
def build(self, input_shape):
input_tensor = Input(shape=input_shape)
conv11 = CRelu(kernel_size=7, filters=16, strides=2, name='conv1_1')(input_tensor)
pool11 = MaxPooling2D(pool_size=3, strides=2, padding='same', name='pool1_1')(conv11)
conv21 = ResidualCRelu(params="3 1 PJ 32-24-128 NO", name='conv2_1')(pool11)
conv22 = ResidualCRelu(params="3 1 NO 32-24-128 BN", name='conv2_2')(conv21)
conv23 = ResidualCRelu(params="3 1 NO 32-24-128 BN", name='conv2_3')(conv22)
conv31 = ResidualCRelu(params="3 2 PJ 64-48-128 BN", name='conv3_1')(conv23)
conv32 = ResidualCRelu(params="3 1 NO 64-48-128 BN", name='conv3_2')(conv31)
conv33 = ResidualCRelu(params="3 1 PJ 64-48-192 BN", name='conv3_3')(conv32)
conv34 = ResidualCRelu(params="3 1 NO 64-48-192 BN", name='conv3_4')(conv33)
conv41 = Inception(params="2 PJ 64 64-128 32-48-48 256", name='conv4_1')(conv34)
conv42 = Inception(params="1 NO 64 64-128 32-48-48 256", name='conv4_2')(conv41)
conv43 = Inception(params="1 NO 64 64-128 32-48-48 256", name='conv4_3')(conv42)
conv44 = Inception(params="1 NO 64 64-128 32-48-48 256", name='conv4_4')(conv43)
conv51 = Inception(params="2 PJ 64 96-192 32-64-64 384", name='conv5_1')(conv44)
conv52 = Inception(params="1 NO 64 96-192 32-64-64 384", name='conv5_2')(conv51)
conv53 = Inception(params="1 NO 64 96-192 32-64-64 384", name='conv5_3')(conv52)
conv54 = Inception(params="1 NO 64 96-192 32-64-64 384", name='conv5_4_pre')(conv53)
conv54 = BatchNormalization(scale=False, name='conv5_4_bn')(conv54)
conv54 = ReLU(name='conv5_4')(conv54)
downscale = MaxPooling2D(pool_size=3, strides=2, padding='same', name='downscale')(conv34)
upscale = tf.keras.layers.UpSampling2D(interpolation='bilinear', name='upscale')(conv54)
concat = Concatenate(name='concat')([downscale, conv44, upscale])
final = conv(filters=768, strides=1, kernel_size=1, activation='relu', name='pva_final')(concat)
# extra feature map layers
extra1 = ConvBn(256, 1, name='extra1_shrink')(final)
extra1 = ConvBn(512, 3, strides=2, padding='same', name='extra1')(extra1)
extra2 = ConvBn(128, 1, name='extra2_shrink')(extra1)
extra2 = ConvBn(256, 3, strides=2, padding='same', name='extra2')(extra2)
extra3 = ConvBn(128, 1, name='extra3_shrink')(extra2)
extra3 = ConvBn(256, 3, name='extra3')(extra3)
extra4 = ConvBn(128, 1, name='extra4_shrink')(extra3)
extra4 = ConvBn(256, 3, name='extra4')(extra4)
extra5 = ConvBn(128, 1, name='extra5_shrink')(extra4)
extra5 = ConvBn(256, 4, name='extra5')(extra5)
feature_maps = [conv34, final, extra1, extra2, extra3, extra4, extra5]
confs, locs, anchors = [], [], []
for i in range(len(feature_maps)):
map = feature_maps[i]
conf = self.conf_layers[i](map)
loc = self.loc_layers[i](map)
anchor = self.anchor_layers[i](map)
confs.append(conf)
locs.append(loc)
anchors.append(anchor)
confs_reshaped = [Reshape((-1, 1))(conf) for conf in confs]
locs_reshaped = [Reshape((-1, 4))(loc) for loc in locs]
anchors_reshaped = [Reshape((-1, 4))(db) for db in anchors]
conf_concat = Concatenate(axis=1, name='scores')(confs_reshaped)
loc_concat = Concatenate(axis=1, name='offsets')(locs_reshaped)
anchor_concat = Concatenate(axis=1, name='default_boxes')(anchors_reshaped)
self.model = Model(input_tensor, [conf_concat, loc_concat, anchor_concat], name='ssd_pvanet')
def init_pvanet(self, path):
self.model.load_weights(path, by_name=True)
merged_layers = Dense(1024, activation='selu')(merged_layers)
output = Dense(12, kernel_initializer='normal',
activation='linear')(merged_layers)
model = Model(inputs=[image_a, image_b, image_fov], outputs=output)
model.compile(optimizer=tf.keras.optimizers.Adam(0.00005, decay=0.00001),
loss=custom_objective,
metrics=[
loss_in_cm, loss_in_radian, loss_in_cm_x, loss_in_cm_y,
loss_in_cm_z
])
model.summary()
if os.path.isfile(SAVED_MODEL_W):
model.load_weights(SAVED_MODEL_W)
print('weights are loaded')
# ============================================================================
# --- Train and print accuracy -----------------------------------------------
# ----------------------------------------------------------------------------
callback = TensorBoard('./logs')
callback.set_model(model)
train_names = [
'train_loss', 'train_loss_in_cm', 'train_loss_in_radian',
'train_loss_in_cm_x', 'train_loss_in_cm_y', 'train_loss_in_cm_z'
]
val_names = [
'val_loss', 'val_loss_in_cm', 'val_loss_in_radian', 'val_loss_in_cm_x',
'val_loss_in_cm_y', 'val_loss_in_cm_z'
class FusionModel:
def __init__(self, config, load_weight_path=None, ab_loss='mse'):
img_shape = (config.IMAGE_SIZE, config.IMAGE_SIZE)
# Creating generator and discriminator
optimizer = Adam(0.00002, 0.5)
self.foreground_generator = instance_network(img_shape)
self.fusion_discriminator = discriminator_network(img_shape)
self.fusion_discriminator.compile(loss=wasserstein_loss_dummy,
optimizer=optimizer)
self.fusion_generator = fusion_network(img_shape, config.BATCH_SIZE)
self.fusion_generator.compile(loss=[ab_loss, 'kld'],
optimizer=optimizer)
if load_weight_path:
chroma_gan = load_model(load_weight_path)
chroma_gan_layers = [layer.name for layer in chroma_gan.layers]
print('Loading chroma GAN parameter to instance network...')
instance_layer_names = [
layer.name for layer in self.foreground_generator.layers
]
for i, layer in enumerate(instance_layer_names):
if layer == 'fg_model_3':
print('model 3 skip')
continue
if len(layer) < 2:
continue
if layer[:3] == 'fg_':
try:
j = chroma_gan_layers.index(layer[3:])
self.foreground_generator.layers[i].set_weights(
chroma_gan.layers[j].get_weights())
print(f'Successfully set weights for layer {layer}')
except ValueError:
print(f'Layer {layer} not found in chroma gan.')
except Exception as e:
print(e)
print('Loading chroma GAN parameter to fusion network...')
fusion_layer_names = [
layer.name for layer in self.fusion_generator.layers
]
for i, layer in enumerate(fusion_layer_names):
if layer == 'model_3':
print('model 3 skip')
continue
try:
j = chroma_gan_layers.index(layer)
self.fusion_generator.layers[i].set_weights(
chroma_gan.layers[j].get_weights())
print(f'Successfully set weights for layer {layer}')
except ValueError:
print(f'Layer {layer} not found in chroma gan.')
except Exception as e:
print(e)
# Fg=instance prediction
fg_img_l = Input(shape=(*img_shape, 1, MAX_INSTANCES))
# self.foreground_generator.trainable = False
fg_model_3, fg_conv2d_11, fg_conv2d_13, fg_conv2d_15, fg_conv2d_17 = self.foreground_generator(
fg_img_l)
# Fusion prediction
fusion_img_l = Input(shape=(*img_shape, 1))
fusion_img_real_ab = Input(shape=(*img_shape, 2))
fg_bbox = Input(shape=(4, MAX_INSTANCES))
fg_mask = Input(shape=(*img_shape, MAX_INSTANCES))
self.fusion_generator.trainable = False
fusion_img_pred_ab, fusion_class_vec = self.fusion_generator([
fusion_img_l, fg_model_3, fg_conv2d_11, fg_conv2d_13, fg_conv2d_15,
fg_conv2d_17, fg_bbox, fg_mask
])
dis_pred_ab = self.fusion_discriminator(
[fusion_img_pred_ab, fusion_img_l])
dis_real_ab = self.fusion_discriminator(
[fusion_img_real_ab, fusion_img_l])
# Sample the gradient penalty
img_ab_interp_samples = RandomWeightedAverage()(
[fusion_img_pred_ab, fusion_img_real_ab])
dis_interp_ab = self.fusion_discriminator(
[img_ab_interp_samples, fusion_img_l])
partial_gp_loss = partial(
gradient_penalty_loss,
averaged_samples=img_ab_interp_samples,
gradient_penalty_weight=GRADIENT_PENALTY_WEIGHT)
partial_gp_loss.__name__ = 'gradient_penalty'
# Compile D and G as well as combined
self.discriminator_model = Model(
inputs=[
fusion_img_l, fusion_img_real_ab, fg_img_l, fg_bbox, fg_mask
],
outputs=[dis_real_ab, dis_pred_ab, dis_interp_ab])
self.discriminator_model.compile(optimizer=optimizer,
loss=[
wasserstein_loss_dummy,
wasserstein_loss_dummy,
partial_gp_loss
],
loss_weights=[-1.0, 1.0, 1.0])
self.fusion_generator.trainable = True
self.fusion_discriminator.trainable = False
self.combined = Model(
inputs=[fusion_img_l, fg_img_l, fg_bbox, fg_mask],
outputs=[fusion_img_pred_ab, fusion_class_vec, dis_pred_ab])
self.combined.compile(loss=[ab_loss, 'kld', wasserstein_loss_dummy],
loss_weights=[1.0, 0.003, -0.1],
optimizer=optimizer)
# Monitor stuff
self.callback = TensorBoard(config.LOG_DIR)
self.callback.set_model(self.combined)
self.train_names = [
'loss', 'mse_loss', 'kullback_loss', 'wasserstein_loss'
]
self.disc_names = ['disc_loss', 'disc_valid', 'disc_fake', 'disc_gp']
self.test_loss_array = []
self.g_loss_array = []
def train(self,
data: Data,
test_data,
log,
config,
skip_to_after_epoch=None):
# Load VGG network
VGG_modelF = applications.vgg16.VGG16(weights='imagenet',
include_top=True)
# Real, Fake and Dummy for Discriminator
positive_y = np.ones((data.batch_size, 1), dtype=np.float32)
negative_y = -positive_y
dummy_y = np.zeros((data.batch_size, 1), dtype=np.float32)
# total number of batches in one epoch
total_batch = int(data.size / data.batch_size)
print(f'batch_size={data.batch_size} * total_batch={total_batch}')
save_path = lambda type, epoch: os.path.join(
config.MODEL_DIR, f"fusion_{type}Epoch{epoch}.h5")
if skip_to_after_epoch:
start_epoch = skip_to_after_epoch + 1
print(f"Loading weights from epoch {skip_to_after_epoch}")
self.combined.load_weights(
save_path("combined", skip_to_after_epoch))
self.fusion_discriminator.load_weights(
save_path("discriminator", skip_to_after_epoch))
else:
start_epoch = 0
for epoch in range(start_epoch, config.NUM_EPOCHS):
for batch in tqdm(range(total_batch)):
train_batch = data.generate_batch()
resized_l = train_batch.resized_images.l
resized_ab = train_batch.resized_images.ab
# GT vgg
predictVGG = VGG_modelF.predict(
np.tile(resized_l, [1, 1, 1, 3]))
# train generator
g_loss = self.combined.train_on_batch([
resized_l, train_batch.instances.l,
train_batch.instances.bbox, train_batch.instances.mask
], [resized_ab, predictVGG, positive_y])
# train discriminator
d_loss = self.discriminator_model.train_on_batch([
resized_l, resized_ab, train_batch.instances.l,
train_batch.instances.bbox, train_batch.instances.mask
], [positive_y, negative_y, dummy_y])
# update log files
write_log(self.callback, self.train_names, g_loss,
(epoch * total_batch + batch + 1))
write_log(self.callback, self.disc_names, d_loss,
(epoch * total_batch + batch + 1))
if batch % 10 == 0:
print(
f"[Epoch {epoch}] [Batch {batch}/{total_batch}] [generator loss: {g_loss[0]:08f}] [discriminator loss: {d_loss[0]:08f}]"
)
print('Saving models...')
self.combined.save(save_path("combined", epoch))
self.fusion_discriminator.save(save_path("discriminator", epoch))
print('Models saved.')
print('Sampling test images...')
# sample images after each epoch
self.sample_images(test_data, epoch, config)
def sample_images(self, test_data: Data, epoch, config):
total_batch = int(ceil(test_data.size / test_data.batch_size))
for _ in range(total_batch):
# load test data
test_batch = test_data.generate_batch()
# predict AB channels
fg_model_3, fg_conv2d_11, fg_conv2d_13, fg_conv2d_15, fg_conv2d_17 = self.foreground_generator.predict(
test_batch.instances.l)
fusion_img_pred_ab, _ = self.fusion_generator.predict([
test_batch.resized_images.l, fg_model_3, fg_conv2d_11,
fg_conv2d_13, fg_conv2d_15, fg_conv2d_17,
test_batch.instances.bbox, test_batch.instances.mask
])
# print results
for i in range(test_data.batch_size):
original_full_img = test_batch.images.full[i]
height, width, _ = original_full_img.shape
pred_ab = cv2.resize(
deprocess_float2int(fusion_img_pred_ab[i]),
(width, height))
reconstruct_and_save(
test_batch.images.l[i], pred_ab,
f'epoch{epoch}_{test_batch.file_names[i]}', config)
def knowledge_transfer(current_student: Model, method: Method, loss: Union[LossType, List[LossType]]) -> \
Tuple[Model, History]:
"""
Performs KT.
:param current_student: the student to be used for the current KT method.
:param method: the method to be used for the KT.
:param loss: the KT loss to be used.
:return: Tuple containing a student Keras model and its training History object.
"""
kt_logging.debug('Configuring student...')
weights = None
y_train_adapted = y_train_concat
y_val_adapted = y_val_concat
metrics = {}
if method == Method.DISTILLATION:
# Adapt student
current_student = kd_student_adaptation(current_student, temperature)
# Create KT metrics.
metrics = generate_supervised_metrics(method)
monitoring_metric = 'val_accuracy'
elif method == Method.PKT_PLUS_DISTILLATION:
# Adapt student
current_student = pkt_plus_kd_student_adaptation(current_student, temperature)
# Create importance weights for the different losses.
weights = [kd_importance_weight, pkt_importance_weight]
if selective_learning:
selective_learning_weights = []
for _ in range(n_submodels):
selective_learning_weights.extend(weights)
weights = selective_learning_weights
# Adapt the labels.
y_train_adapted.extend(y_train_adapted)
y_val_adapted.extend(y_val_adapted)
else:
# Adapt the labels.
y_train_adapted = [y_train_concat, y_train_concat]
y_val_adapted = [y_val_concat, y_val_concat]
# Create KT metrics.
metrics = generate_supervised_metrics(method)
monitoring_metric = 'val_concatenate_accuracy'
else:
# PKT performs KT, but also rotates the space, thus evaluating results has no meaning,
# since the neurons representing the classes are not the same anymore.
monitoring_metric = 'val_loss'
if selective_learning:
current_student = selective_learning_student_adaptation(current_student, n_submodels)
monitoring_metric = 'val_loss'
# Create optimizer.
optimizer = initialize_optimizer(optimizer_name, learning_rate, decay, beta1, beta2, rho, momentum,
clip_norm, clip_value)
# Compile student.
current_student.compile(optimizer, loss, metrics, weights)
# Initialize callbacks list.
kt_logging.debug('Initializing Callbacks...')
# Create a temp file, in order to save the model, if needed.
tmp_weights_path = None
if use_best_model:
tmp_weights_path = join(gettempdir(), next(mktemp()) + '.h5')
callbacks_list = init_callbacks(monitoring_metric, lr_patience, lr_decay, lr_min, early_stopping_patience,
verbosity, tmp_weights_path, selective_learning)
# Train student.
history = current_student.fit(x_train, y_train_adapted, batch_size=batch_size, callbacks=callbacks_list,
epochs=epochs, validation_data=(x_val, y_val_adapted), verbose=verbosity)
if exists(tmp_weights_path):
# Load best weights and delete the temp file.
current_student.load_weights(tmp_weights_path)
remove(tmp_weights_path)
# Rewind student to its normal state, if necessary.
if selective_learning:
current_student = selective_learning_student_rewind(current_student, optimizer=optimizer, loss=loss[0],
metrics=metrics)
if method == Method.DISTILLATION:
current_student = kd_student_rewind(current_student)
elif method == Method.PKT_PLUS_DISTILLATION:
current_student = pkt_plus_kd_rewind(current_student)
return current_student, history
class FaceEncoder:
def __init__(self, image_size, gf_dim, gfc_dim, sh_dim, tx_dim, co_dim,
m_dim, il_dim, ep_dim):
self.image_size = image_size
self.bn_axis = 3
self.gf_dim = gf_dim
self.gfc_dim = gfc_dim
self.m_dim = m_dim
self.il_dim = il_dim
self.sh_dim = sh_dim
self.tx_dim = tx_dim
self.co_dim = co_dim
self.ep_dim = ep_dim
def build(self):
inputs = Input(shape=[self.image_size, self.image_size, 3],
name='image_input')
x = self.get_encoder(inputs=inputs, is_reuse=False, is_training=True)
self.model = Model(inputs=inputs, outputs=x, name='FaceEncoder')
def __call__(self, inputs, training=False):
return self.model(inputs=inputs, training=training)
def summary(self):
print(self.model.summary())
def load_pretrained(self, weights_path):
self.model.load_weights(filepath=weights_path)
def get_encoder(self, inputs, is_reuse=False, is_training=True):
if not is_reuse:
self.g_bn0_0 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn0_0',
scale=True,
fused=True)
self.g_bn0_1 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn0_1',
scale=True,
fused=True)
self.g_bn0_2 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn0_2',
scale=True,
fused=True)
self.g_bn0_3 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn0_3',
scale=True,
fused=True)
self.g_bn1_0 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn1_0',
scale=True,
fused=True)
self.g_bn1_1 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn1_1',
scale=True,
fused=True)
self.g_bn1_2 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn1_2',
scale=True,
fused=True)
self.g_bn1_3 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn1_3',
scale=True,
fused=True)
self.g_bn2_0 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn2_0',
scale=True,
fused=True)
self.g_bn2_1 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn2_1',
scale=True,
fused=True)
self.g_bn2_2 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn2_2',
scale=True,
fused=True)
self.g_bn2_3 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn2_3',
scale=True,
fused=True)
self.g_bn3_0 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn3_0',
scale=True,
fused=True)
self.g_bn3_1 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn3_1',
scale=True,
fused=True)
self.g_bn3_2 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn3_2',
scale=True,
fused=True)
self.g_bn3_3 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn3_3',
scale=True,
fused=True)
self.g_bn4_0 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn4_0',
scale=True,
fused=True)
self.g_bn4_1 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn4_1',
scale=True,
fused=True)
self.g_bn4_2 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn4_2',
scale=True,
fused=True)
self.g_bn4_c = BatchNormalization(axis=self.bn_axis,
name='g_h_bn4_c',
scale=True,
fused=True)
self.g_bn5 = BatchNormalization(axis=self.bn_axis,
name='g_k_bn5',
scale=True,
fused=True)
self.g_bn5_m = BatchNormalization(axis=self.bn_axis,
name='g_k_bn5_m',
scale=True,
fused=True)
self.g_bn5_ill = BatchNormalization(axis=self.bn_axis,
name='g_k_bn5_ill',
scale=True,
fused=True)
self.g_bn5_shape = BatchNormalization(axis=self.bn_axis,
name='g_k_bn5_shape',
scale=True,
fused=True)
self.g_bn5_col = BatchNormalization(axis=self.bn_axis,
name='g_k_bn5_col',
scale=True,
fused=True)
self.g_bn5_exp = BatchNormalization(axis=self.bn_axis,
name='g_k_bn5_exo',
scale=True,
fused=True)
self.g_bn5_tex = BatchNormalization(axis=self.bn_axis,
name='g_k_bn5_tex',
scale=True,
fused=True)
# inputs are of size 224 x 224 x 3
k0_1 = elu(
self.g_bn0_1(Conv2D(self.gf_dim * 1, (7, 7), (2, 2),
padding='SAME',
use_bias=False,
name='g_k01_conv')(inputs),
training=is_training))
k0_2 = elu(
self.g_bn0_2(Conv2D(self.gf_dim * 2, (3, 3), (1, 1),
padding='SAME',
use_bias=False,
name='g_k02_conv')(k0_1),
training=is_training))
k1_0 = elu(
self.g_bn1_0(Conv2D(self.gf_dim * 2, (3, 3), (2, 2),
padding='SAME',
use_bias=False,
name='g_k10_conv')(k0_2),
training=is_training))
k1_1 = elu(
self.g_bn1_1(Conv2D(self.gf_dim * 2, (3, 3), (1, 1),
padding='SAME',
use_bias=False,
name='g_k11_conv')(k1_0),
training=is_training))
k1_2 = elu(
self.g_bn1_2(Conv2D(self.gf_dim * 4, (3, 3), (1, 1),
padding='SAME',
use_bias=False,
name='g_k12_conv')(k1_1),
training=is_training))
k2_0 = elu(
self.g_bn2_0(Conv2D(self.gf_dim * 4, (3, 3), (2, 2),
padding='SAME',
use_bias=False,
name='g_k20_conv')(k1_2),
training=is_training))
k2_1 = elu(
self.g_bn2_1(Conv2D(self.gf_dim * 3, (3, 3), (1, 1),
padding='SAME',
use_bias=False,
name='g_k21_conv')(k2_0),
training=is_training))
k2_2 = elu(
self.g_bn2_2(Conv2D(self.gf_dim * 6, (3, 3), (1, 1),
padding='SAME',
use_bias=False,
name='g_k22_conv')(k2_1),
training=is_training))
k3_0 = elu(
self.g_bn3_0(Conv2D(self.gf_dim * 6, (3, 3), (2, 2),
padding='SAME',
use_bias=False,
name='g_k30_conv')(k2_2),
training=is_training))
k3_1 = elu(
self.g_bn3_1(Conv2D(self.gf_dim * 4, (3, 3), (1, 1),
padding='SAME',
use_bias=False,
name='g_k31_conv')(k3_0),
training=is_training))
k3_2 = elu(
self.g_bn3_2(Conv2D(self.gf_dim * 8, (3, 3), (1, 1),
padding='SAME',
use_bias=False,
name='g_k32_conv')(k3_1),
training=is_training))
k4_0 = elu(
self.g_bn4_0(Conv2D(self.gf_dim * 8, (3, 3), (2, 2),
padding='SAME',
use_bias=False,
name='g_k40_conv')(k3_2),
training=is_training))
k4_1 = elu(
self.g_bn4_1(Conv2D(self.gf_dim * 5, (3, 3), (1, 1),
padding='SAME',
use_bias=False,
name='g_k41_conv')(k4_0),
training=is_training))
# Pose
k51_m = self.g_bn5_m(Conv2D(int(self.gfc_dim / 8), (3, 3), (1, 1),
padding='SAME',
use_bias=False,
name='g_k5_m_conv')(k4_1),
training=is_training)
k51_shape_ = k51_m.shape
k52_m = AveragePooling2D(pool_size=[k51_shape_[1], k51_shape_[2]],
strides=[1, 1],
padding='VALID')(k51_m)
k52_m = tf.reshape(k52_m, [-1, int(self.gfc_dim / 8)])
k6_m = Dense(self.m_dim, name='g_k6_m_lin')(k52_m)
# Illumination
k51_ill = self.g_bn5_ill(Conv2D(int(self.gfc_dim / 8), (3, 3), (1, 1),
padding='SAME',
name='g_k5_il_conv')(k4_1),
training=is_training)
k52_ill = AveragePooling2D(pool_size=[k51_shape_[1], k51_shape_[2]],
strides=[1, 1],
padding='VALID')(k51_ill)
k52_ill = tf.reshape(k52_ill, [-1, int(self.gfc_dim / 8)])
k6_ill = Dense(self.il_dim, name='g_k6_ill_lin')(k52_ill)
# Shape
k51_shape = self.g_bn5_shape(Conv2D(self.sh_dim, (3, 3), (1, 1),
padding='SAME',
name='g_k5_shape_conv')(k4_1),
training=is_training)
k52_shape = AveragePooling2D(pool_size=[k51_shape_[1], k51_shape_[2]],
strides=[1, 1],
padding='VALID')(k51_shape)
k52_shape = tf.reshape(k52_shape, [-1, self.sh_dim])
# Texture
k51_tex = self.g_bn5_tex(Conv2D(self.tx_dim, (3, 3), (1, 1),
padding='SAME',
name='g_k5_tex_conv')(k4_1),
training=is_training)
k52_tex = AveragePooling2D(pool_size=[k51_shape_[1], k51_shape_[2]],
strides=[1, 1],
padding='VALID')(k51_tex)
k52_tex = tf.reshape(k52_tex, [-1, self.tx_dim])
# Expression
k51_exp = self.g_bn5_exp(Conv2D(self.ep_dim, (3, 3), (1, 1),
padding='SAME',
name='g_k5_exp_conv')(k4_1),
training=is_training)
k52_exp = AveragePooling2D(pool_size=[k51_shape_[1], k51_shape_[2]],
strides=[1, 1],
padding='VALID')(k51_exp)
k52_exp = tf.reshape(k52_exp, [-1, self.ep_dim])
# Color
k51_col = self.g_bn5_col(Conv2D(int(self.gfc_dim / 8), (3, 3), (1, 1),
padding='SAME',
name='g_k5_col_conv')(k4_1),
training=is_training)
k52_col = AveragePooling2D(pool_size=[k51_shape_[1], k51_shape_[2]],
strides=[1, 1],
padding='VALID')(k51_col)
k52_col = tf.reshape(k52_col, [-1, int(self.gfc_dim / 8)])
k6_col = Dense(self.co_dim, name='g_k6_col_lin')(k52_col)
return k52_shape, k52_tex, k52_exp, k6_m, k6_ill, k6_col
def csp_darknet53(input_shape=None,
input_tensor=None,
include_top=True,
weights='imagenet',
pooling=None,
classes=1000,
**kwargs):
"""Generate cspdarknet53 model for Imagenet classification."""
if not (weights in {'imagenet', None} or os.path.exists(weights)):
raise ValueError('The `weights` argument should be either '
'`None` (random initialization), `imagenet` '
'(pre-training on ImageNet), '
'or the path to the weights file to be loaded.')
if weights == 'imagenet' and include_top and classes != 1000:
raise ValueError(
'If using `weights` as `"imagenet"` with `include_top`'
' as true, `classes` should be 1000')
# Determine proper input shape
input_shape = _obtain_input_shape(input_shape,
default_size=224,
min_size=28,
data_format=K.image_data_format(),
require_flatten=include_top,
weights=weights)
if input_tensor is None:
img_input = Input(shape=input_shape)
else:
img_input = input_tensor
x = csp_darknet53_body(img_input)
if include_top:
model_name = 'cspdarknet53'
x = GlobalAveragePooling2D(name='avg_pool')(x)
x = Reshape((1, 1, 1024))(x)
x = DarknetConv2D(classes, (1, 1))(x)
x = Flatten()(x)
x = Softmax(name='Predictions/Softmax')(x)
else:
model_name = 'cspdarknet53_headless'
if pooling == 'avg':
x = GlobalAveragePooling2D(name='avg_pool')(x)
elif pooling == 'max':
x = GlobalMaxPooling2D(name='max_pool')(x)
# Ensure that the model takes into account
# any potential predecessors of `input_tensor`.
if input_tensor is not None:
inputs = get_source_inputs(input_tensor)
else:
inputs = img_input
# Create model.
model = Model(inputs, x, name=model_name)
# Load weights.
if weights == 'imagenet':
if include_top:
file_name = 'cspdarknet53_weights_tf_dim_ordering_tf_kernels_224.h5'
weight_path = BASE_WEIGHT_PATH + file_name
else:
file_name = 'cspdarknet53_weights_tf_dim_ordering_tf_kernels_224_no_top.h5'
weight_path = BASE_WEIGHT_PATH + file_name
weights_path = get_file(file_name, weight_path, cache_subdir='models')
model.load_weights(weights_path)
elif weights is not None:
model.load_weights(weights)
return model
class jyHEDModelV2_2_SGD_GradientTape_L1(jyModelBase):
def __init__(self):
super(jyHEDModelV2_2_SGD_GradientTape_L1, self).__init__()
self.__listLayerName = []
self.__pVisualModel = None
self.__bLoadModel = False
self.__pTrainFW = tf.summary.create_file_writer(self._strLogPath +
'/train')
self.__pValidFW = tf.summary.create_file_writer(self._strLogPath +
'/valid')
self.__pMetricsFW = tf.summary.create_file_writer(self._strLogPath +
'/metrics')
def structureModel(self):
weightDecay = 0.00001
Inputs = layers.Input(shape=self._inputShape,
batch_size=self._iBatchSize)
Con1 = layers.Conv2D(64, (3, 3),
name='Con1',
activation='relu',
padding='SAME',
input_shape=self._inputShape,
strides=1,
kernel_regularizer=l2(weightDecay))(Inputs)
Con2 = layers.Conv2D(64, (3, 3),
name='Con2',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(Con1)
Side1 = sideBranch(Con2, 1)
MaxPooling1 = layers.MaxPooling2D((2, 2),
name='MaxPooling1',
strides=2,
padding='SAME')(Con2)
# outputs1
Con3 = layers.Conv2D(128, (3, 3),
name='Con3',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(MaxPooling1)
Con4 = layers.Conv2D(128, (3, 3),
name='Con4',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(Con3)
Side2 = sideBranch(Con4, 2)
MaxPooling2 = layers.MaxPooling2D((2, 2),
name='MaxPooling2',
strides=2,
padding='SAME')(Con4)
# outputs2
Con5 = layers.Conv2D(256, (3, 3),
name='Con5',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(MaxPooling2)
Con6 = layers.Conv2D(256, (3, 3),
name='Con6',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(Con5)
Con7 = layers.Conv2D(256, (3, 3),
name='Con7',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(Con6)
Side3 = sideBranch(Con7, 4)
MaxPooling3 = layers.MaxPooling2D((2, 2),
name='MaxPooling3',
strides=2,
padding='SAME')(Con7)
# outputs3
Con8 = layers.Conv2D(512, (3, 3),
name='Con8',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(MaxPooling3)
Con9 = layers.Conv2D(512, (3, 3),
name='Con9',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(Con8)
Con10 = layers.Conv2D(512, (3, 3),
name='Con10',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(Con9)
Side4 = sideBranch(Con10, 8)
MaxPooling4 = layers.MaxPooling2D((2, 2),
name='MaxPooling4',
strides=2,
padding='SAME')(Con10)
# outputs4
Con11 = layers.Conv2D(512, (3, 3),
name='Con11',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(MaxPooling4)
Con12 = layers.Conv2D(512, (3, 3),
name='Con12',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(Con11)
Con13 = layers.Conv2D(512, (3, 3),
name='Con13',
activation='relu',
padding='SAME',
strides=1,
kernel_regularizer=l2(weightDecay))(Con12)
Side5 = sideBranch(Con13, 16)
Fuse = layers.Concatenate(axis=-1)([Side1, Side2, Side3, Side4, Side5])
# learn fusion weight
fuseInitWeight = initializers.constant(0.2)
Fuse = layers.Conv2D(1, (1, 1),
name='Fuse',
padding='SAME',
use_bias=False,
activation=None,
kernel_initializer=fuseInitWeight,
kernel_regularizer=l1(weightDecay))(Fuse)
# output1 = layers.Activation('sigmoid', name='output1')(Side1)
# output2 = layers.Activation('sigmoid', name='output2')(Side2)
# output3 = layers.Activation('sigmoid', name='output3')(Side3)
# output4 = layers.Activation('sigmoid', name='output4')(Side4)
# output5 = layers.Activation('sigmoid', name='output5')(Side5)
output6 = layers.Activation('sigmoid', name='output6')(Fuse)
outputs = [output6
] # [output1, output2, output3, output4, output5, output6]
self._pModel = Model(inputs=Inputs, outputs=outputs)
pOptimizer = optimizers.adam(lr=0.0001)
pOptimizer = optimizers.SGD(lr=0.000001, decay=0., momentum=0.9)
pOptimizer = tf.optimizers.SGD(lr=0.5, decay=0., momentum=0.9)
# pOptimizer = monitorSGD(lr=0.000001, decay=0., momentum=0.9)
# grads = tf.gradients(classBalancedSigmoidCrossEntropy, self._pModel.trainable_weights)
# pSGD = optimizers.SGD()
self._pModel.compile(
loss={
# 'output1': classBalancedSigmoidCrossEntropy,
# 'output2': classBalancedSigmoidCrossEntropy,
# 'output3': classBalancedSigmoidCrossEntropy,
# 'output4': classBalancedSigmoidCrossEntropy,
# 'output5': classBalancedSigmoidCrossEntropy,
'output6': classBalancedSigmoidCrossEntropy
},
optimizer=pOptimizer)
# self._pModel.summary()
def startTrain(self, listDS, iMaxLen, iBatchSize):
'''
itrTrain = tf.compat.v1.data.make_one_shot_iterator(listDS[0])
itrValid = tf.compat.v1.data.make_one_shot_iterator(listDS[1])
iStepsPerEpochTrain = int(iMaxLen[0] / iBatchSize[0])
iStepsPerEpochValid = int(iMaxLen[1] / iBatchSize[1])
pBack = myCallback(self._strLogPath)
self._pModel.fit(itrTrain, validation_data=itrValid, epochs=self._iEpochs,
callbacks=[self._pSaveModel, self._pTensorboard, pBack], steps_per_epoch=iStepsPerEpochTrain,
validation_steps=iStepsPerEpochValid)
'''
itrTrain = tf.compat.v1.data.make_one_shot_iterator(listDS[0])
itrValid = tf.compat.v1.data.make_one_shot_iterator(listDS[1])
iStepsPerEpochTrain = int(iMaxLen[0] / iBatchSize[0])
iStepsPerEpochValid = int(iMaxLen[1] / iBatchSize[1])
# trainLoss = tf.keras.metrics.Mean(name='train_loss')
dictLossGroup = self._pModel.loss
# t = self._pModel.layers[23].losses
# t = self._pModel.weights[0].name
# p = self._pModel.loss
iTick = 0
# epoch
for epoch in range(self._iEpochs):
# save model
if iTick > self._iPeriod:
strModelFileName = self._strModelFileName.format(epoch=epoch +
1)
filepath = self._strSavePath + strModelFileName
print(self._strFormat %
('Epoch: %s/%s, SaveModel: %s' %
(str(epoch), str(self._iEpochs), strModelFileName)))
self._pModel.save_weights(filepath, overwrite=True)
iTick = 0
iTick += 1
# stepsPerEpoch
for stepsPerEpoch in range(iStepsPerEpochTrain):
with tf.GradientTape() as tape:
itr = itrTrain.next()
# output define as [out1, out2, ....., out6]
listPredict = [self._pModel(itr[0])]
t = self._pModel.weights
listLabel = [itr[1]]
listLoss = []
fAllLoss = 0.
template = 'Per: {}/{}, TrainLoss: {} -- '
i = 0
# multiple output, calculate loss
for key in dictLossGroup:
# loss function
pLoss = dictLossGroup[key]
# add regularize
regularization_loss = tf.math.add_n(
self._pModel.losses)
# pLoss += tf.add_n
# loss value
outputLoss = pLoss(
listLabel[i], listPredict[i]) + regularization_loss
listLoss.append(outputLoss)
# sum of loss
fAllLoss += outputLoss
# print format
template += 'train_loss_%s: {} -- ' % key
i += 1
# calculate gradient
gradient = tape.gradient(fAllLoss,
self._pModel.trainable_weights)
# trainLoss(fAllLoss)
template += '\n'
print(
template.format(stepsPerEpoch + 1, iStepsPerEpochTrain,
fAllLoss, listLoss[0]))
# backprop
self._pModel.optimizer.apply_gradients(
zip(gradient, self._pModel.trainable_weights))
# 每执行完一个train epoch 进行validcross 因此valid计算不能与train同步进行要在train epoch结束后进行
fValidAllLoss = 0.
listValidLoss = list(0 for n in range(len(dictLossGroup)))
for stepsPerEpochValid in range(iStepsPerEpochValid):
itr2 = itrValid.next()
listPreValid = [self._pModel(itr2[0])]
listValidLabel = [itr2[1]]
i = 0
for key in dictLossGroup:
# loss function
pLoss = dictLossGroup[key]
# loss value
outputValidLoss = pLoss(listValidLabel[i], listPreValid[i])
listValidLoss[i] += outputValidLoss
# sum of loss
fValidAllLoss += outputValidLoss
# print format
# template += ' --train_loss_%s: {}-- ' % key
i += 1
# mean of val_loss
fValidAllLoss /= iStepsPerEpochValid
validTemplate = 'Epoch {}, val_loss: {} -- '.format(
epoch + 1, fValidAllLoss)
for k in range(len(listValidLoss)):
listValidLoss[k] /= iStepsPerEpochValid
validTemplate += 'val_loss_{}: {} -- '.format(
k + 1, listValidLoss[k])
print(
'\n-----------------------------------------------------------------------\n'
)
print(validTemplate)
print(
'\n-----------------------------------------------------------------------\n'
)
# per epoch output
with self.__pTrainFW.as_default():
i = 0
tf.summary.scalar('loss: ', fAllLoss, step=epoch)
# tf.summary.scalar('val_loss: ', fValidAllLoss, step=epoch)
for key in dictLossGroup:
tf.summary.scalar('loss_' + key, listLoss[i], step=epoch)
# tf.summary.scalar('val_loss_' + key, listValidLoss[i], step=epoch)
i += 1
with self.__pMetricsFW.as_default():
# save gradient each layer
pLayerWeight = self._pModel.trainable_weights
for i in range(len(pLayerWeight)):
strName = pLayerWeight[i].name + '/Grad'
tf.summary.histogram(strName, gradient[i], step=epoch)
# mean grad
meanGrad = tf.reduce_mean(gradient[i])
tf.summary.scalar(strName + '/Mean', meanGrad, step=epoch)
# model grad
tensorNorm = tf.norm(gradient[i])
tf.summary.scalar(strName + '/Norm',
tensorNorm,
step=epoch)
with self.__pValidFW.as_default():
i = 0
tf.summary.scalar('loss: ', fValidAllLoss, step=epoch)
for key in dictLossGroup:
tf.summary.scalar('loss_' + key,
listValidLoss[i],
step=epoch)
i += 1
def loadWeights(self, strPath):
# last = tf.train.latest_checkpoint(strPath)
# checkPoint = tf.train.load_checkpoint(strPath)
self._pModel.load_weights(strPath)
# w = self._pModel.weights
# visual model
self.__bLoadModel = True
def generateVisualModel(self):
outputs = []
for myLayer in self._pModel.layers:
self.__listLayerName.append(myLayer.name)
outputs.append(myLayer.output)
# print(self.__pModel.layers[0])
# self.__pVisualModel = Model(self.__pModel.inputs, outputs=outputs)
self.__pVisualModel = Model(self._pModel.inputs,
outputs=self._pModel.outputs)
return self.__pVisualModel
def predict(self, IMG):
# pImage = open(IMG, 'rb').read()
# tensorIMG = tf.image.decode_jpeg(pImage)
pIMG = image.array_to_img(IMG) # .resize((256, 144))
tensorIMG = image.img_to_array(pIMG)
x = np.array(tensorIMG / 255.0)
# show image
iColumn = 4
# generate window
plt.figure(num='Input')
# plt.subplot(1, 1, 1)
plt.imshow(x)
# imagetest = x
x = np.expand_dims(x, axis=0)
# pyplot.imshow(x)
time1 = datetime.datetime.now()
outputs = self.__pVisualModel.predict(x)
time2 = datetime.datetime.now()
print(time2 - time1)
i = 100
listOutput = []
for i in range(len(outputs)):
outputShape = outputs[i].shape
singleOut = outputs[i].reshape(outputShape[0], outputShape[1],
outputShape[2])
# singleOut *= 255
listOutput.append(singleOut)
singleOut = listOutput[-1]
singleOut[singleOut > 0.5] = 1
listOutput[-1] = singleOut
return listOutput
'''
for output in outputs:
# plt.figure(num='%s' % str(i))
outputShape = output.shape
singleOut = output.reshape(outputShape[1], outputShape[2], outputShape[3])
singleOut *= 255
if outputShape[3] == 1:
# test = x - output
# test = np.abs(test)
# return mysum
# plt.subplot(1, 1, 1)
# plt.imshow(singleOut, camp='gray')
# cv2.imwrite('D:\wyc\Projects\TrainDataSet\HED\Result/%s.jpg' % str(i), singleOut)
return singleOut
# i += 1
# plt.show()
'''
def getModelConfig(self):
return self._iBatchSize
class RetroCycleGAN:
def __init__(self, save_index="0", save_folder="./", generator_size=32,
discriminator_size=64, word_vector_dimensions=300,
discriminator_lr=0.0001, generator_lr=0.0001,
lambda_cycle=1, lambda_id_weight=0.01, one_way_mm=True,
cycle_mm=True,
cycle_dis=True,
id_loss=True,
cycle_mm_w=2,
cycle_loss=True):
self.cycle_mm = cycle_mm
self.cycle_dis = cycle_dis
self.cycle_mae = cycle_loss
self.id_loss = id_loss
self.one_way_mm = one_way_mm
self.cycle_mm_w = cycle_mm_w if self.cycle_mm else 0
self.save_folder = save_folder
# Input shape
self.word_vector_dimensions = word_vector_dimensions
self.embeddings_dimensionality = (self.word_vector_dimensions,) # , self.channels)
self.save_index = save_index
# Number of filters in the first layer of G and D
self.gf = generator_size
self.df = discriminator_size
# Loss weights
self.lambda_cycle = lambda_cycle if self.cycle_mae else 0# Cycle-consistency loss
self.lambda_id = lambda_id_weight if self.id_loss else 0 # Identity loss
d_lr = discriminator_lr
self.d_lr = d_lr
g_lr = generator_lr
self.g_lr = g_lr
# cv = clip_value
# cn = cn
self.d_A = self.build_discriminator(name="word_vector_discriminator")
self.d_B = self.build_discriminator(name="retrofitted_word_vector_discriminator")
self.d_ABBA = self.build_c_discriminator(name="cycle_cond_discriminator_unfit")
self.d_BAAB = self.build_c_discriminator(name="cycle_cond_discriminator_fit")
# Best combo sofar SGD, gaussian, dropout,5,0.5 mml(0,5,.5),3x1024gen, 2x1024, no normalization
# return Adam(lr,amsgrad=True,decay=1e-8)
# -------------------------
# Construct Computational
# Graph of Generators
# -------------------------
# Build the generators
self.g_AB = self.build_generator(name="to_retro_generator")
# for layer in self.g_AB.layers:
# a = layer.get_weights()
# print(a)
# self.d_A.summary()
# self.g_AB.summary()
# plot_model(self.g_AB, show_shapes=True)
self.g_BA = self.build_generator(name="from_retro_generator")
# self.d_B.summary()
# self.g_BA.summary()
# Input images from both domains
unfit_wv = Input(shape=self.embeddings_dimensionality, name="plain_word_vector")
fit_wv = Input(shape=self.embeddings_dimensionality, name="retrofitted_word_vector")
#
# Translate images to the other domain
fake_B = self.g_AB(unfit_wv)
fake_A = self.g_BA(fit_wv)
# Translate images back to original domain
reconstr_A = self.g_BA(fake_B)
reconstr_B = self.g_AB(fake_A)
print("Building recon model")
# self.reconstr = Model(inputs=[unfit_wv,fit_wv],outputs=[reconstr_A,reconstr_B])
print("Done")
# Identity mapping of images
unfit_wv_id = self.g_BA(unfit_wv)
fit_wv_id = self.g_AB(fit_wv)
# For the combined model we will only train the generators
# Discriminators determines validity of translated images
valid_A = self.d_A(fake_A)
valid_B = self.d_B(fake_B)
# Combined model trains generators to fool discriminators
self.d_A.trainable = False
self.d_B.trainable = False
# self.d_ABBA.trainable = False
# self.d_BAAB.trainable = False
self.combined = Model(inputs=[unfit_wv, fit_wv], # Model that does A->B->A (left), B->A->B (right)
outputs=[valid_A, valid_B, # for the bce calculation
reconstr_A, reconstr_B, # for the mae calculation
reconstr_A, reconstr_B, # for the max margin calculation
unfit_wv_id, fit_wv_id,
# dAc_r, dBc_r, # for the conditional discriminator margin calculation
# dAc_fake, dBc_fake # for the conditional discriminator margin calculation
], # for the id loss calculation
name="combinedmodel")
log_path = './logs'
callback = keras.callbacks.TensorBoard(log_dir=log_path)
callback.set_model(self.combined)
self.combined_callback = callback
def compile_all(self, optimizer="sgd"):
def max_margin_loss(y_true, y_pred):
cost = 0
sim_neg = 25
sim_margin = 1
for i in range(0, sim_neg):
new_true = tf.random.shuffle(y_true)
normalize_a = tf.nn.l2_normalize(y_true)
normalize_b = tf.nn.l2_normalize(y_pred)
normalize_c = tf.nn.l2_normalize(new_true)
minimize = tf.reduce_sum(tf.multiply(normalize_a, normalize_b))
maximize = tf.reduce_sum(tf.multiply(normalize_a, normalize_c))
mg = sim_margin - minimize + maximize
# print(mg)
cost += tf.keras.backend.clip(mg, 0, 1000)
return cost / (sim_neg * 1.0)
def create_opt(lr=0.1):
if optimizer == "adam":
opt = tf.optimizers.Adam(lr=lr, epsilon=1e-10)
return opt
else:
raise KeyError("coULD NOT FIND THE OPTIMIZER")
# self.d_A.trainable = True
# self.d_B.trainable = True
self.d_A.compile(loss='binary_crossentropy',
optimizer=create_opt(self.d_lr),
metrics=['accuracy'])
self.d_ABBA.compile(loss='binary_crossentropy',
optimizer=create_opt(self.d_lr),
metrics=['accuracy'])
self.d_BAAB.compile(loss='binary_crossentropy',
optimizer=create_opt(self.d_lr),
metrics=['accuracy'])
self.d_B.compile(loss='binary_crossentropy',
optimizer=create_opt(self.d_lr),
metrics=['accuracy'])
# self.d_A.trainable = False
# self.d_B.trainable = False
self.g_AB.compile(loss=max_margin_loss,
optimizer=create_opt(self.g_lr),
)
self.g_BA.compile(loss=max_margin_loss,
optimizer=create_opt(self.g_lr),
)
self.combined.compile(loss=['binary_crossentropy', 'binary_crossentropy',
'mae', 'mae',
max_margin_loss, max_margin_loss,
'mae', 'mae',
],
loss_weights=[1, 1,
self.lambda_cycle * 1, self.lambda_cycle * 1,
self.cycle_mm_w, self.cycle_mm_w,
self.lambda_id, self.lambda_id,
# self.lambda_cycle * 1, self.lambda_cycle * 1,
# self.lambda_cycle * 1, self.lambda_cycle * 1
],
optimizer=create_opt(self.g_lr))
# self.combined.summary()
self.g_AB.summary()
self.d_A.summary()
self.combined.summary()
def build_generator(self, name, hidden_dim=2048):
"""U-Net Generator"""
def dense(layer_input, hidden_dim, normalization=True, dropout=True, dropout_percentage=0.2):
d = Dense(hidden_dim, activation="relu")(layer_input)
if normalization:
d = BatchNormalization()(d)
if dropout:
d = Dropout(dropout_percentage)(d)
return d
# Image input
inpt = Input(shape=self.embeddings_dimensionality)
encoder = dense(inpt, hidden_dim, normalization=False, dropout=True, dropout_percentage=0.2)
decoder = dense(encoder, hidden_dim, normalization=False, dropout=True, dropout_percentage=0.2) # +encoder
output = Dense(self.word_vector_dimensions)(decoder)
return Model(inpt, output, name=name)
def build_discriminator(self, name, hidden_dim=2048):
def d_layer(layer_input, hidden_dim, normalization=True, dropout=True, dropout_percentage=0.3):
"""Discriminator layer"""
d = Dense(hidden_dim, activation="relu")(layer_input)
if normalization:
d = BatchNormalization()(d)
if dropout:
d = Dropout(dropout_percentage)(d)
return d
inpt = Input(shape=self.embeddings_dimensionality)
d1 = d_layer(inpt, hidden_dim, normalization=False, dropout=True, dropout_percentage=0.3)
d1 = d_layer(d1, hidden_dim, normalization=True, dropout=True, dropout_percentage=0.3)
validity = Dense(1, activation="sigmoid", dtype='float32')(d1)
return Model(inpt, validity, name=name)
def build_c_discriminator(self, name, hidden_dim=2048):
def d_layer(layer_input, hidden_dim, normalization=True, dropout=True, dropout_percentage=0.3):
"""Discriminator layer"""
d = Dense(hidden_dim, activation="relu")(layer_input)
if normalization:
d = BatchNormalization()(d)
if dropout:
d = Dropout(dropout_percentage)(d)
return d
inpt = Input(shape=600)
d1 = d_layer(inpt, hidden_dim, normalization=False, dropout=True, dropout_percentage=0.3)
d1 = d_layer(d1, hidden_dim, normalization=True, dropout=True, dropout_percentage=0.3)
validity = Dense(1, activation="sigmoid", dtype='float32')(d1)
return Model(inpt, validity, name=name)
def load_weights(self, preface="", folder=None):
if folder is None:
folder = self.save_folder
try:
self.g_AB.reset_states()
self.g_BA.reset_states()
self.combined.reset_states()
self.d_B.reset_states()
self.d_A.reset_states()
self.d_A.load_weights(os.path.join(folder, preface + "fromretrodis.h5"))
self.d_B.load_weights(os.path.join(folder, preface + "toretrodis.h5"))
self.g_AB.load_weights(os.path.join(folder, preface + "toretrogen.h5"))
self.g_BA.load_weights(os.path.join(folder, preface + "fromretrogen.h5"))
self.combined.load_weights(os.path.join(folder, preface + "combined_model.h5"))
except Exception as e:
print(e)
def train(self, epochs, dataset, save_folder, name, batch_size=1, cache=False, epochs_per_checkpoint=4,
dis_train_amount=3):
wandb.init(project="retrogan", dir=save_folder)
wandb.run.name = name
# wandb.watch(self.g_AB,criterion="simlex")
wandb.run.save()
self.name = name
start_time = datetime.datetime.now()
res = []
X_train, Y_train = tools.load_all_words_dataset_final(dataset["original"], dataset["retrofitted"],
save_folder=save_folder, cache=cache)
print("Shapes of training data:",
X_train.shape,
Y_train.shape)
print(X_train)
print(Y_train)
print("*" * 100)
def load_batch(batch_size=32, always_random=False):
def _int_load():
iterable = list(Y_train.index)
shuffle(iterable)
batches = []
print("Prefetching batches")
for ndx in tqdm(range(0, len(iterable), batch_size)):
try:
ixs = iterable[ndx:min(ndx + batch_size, len(iterable))]
if always_random:
ixs = list(np.array(iterable)[random.sample(range(0, len(iterable)), batch_size)])
imgs_A = X_train.loc[ixs]
imgs_B = Y_train.loc[ixs]
if np.isnan(imgs_A).any().any() or np.isnan(imgs_B).any().any(): # np.isnan(imgs_B).any():
# print(ixs)
continue
batches.append((imgs_A, imgs_B))
except Exception as e:
print("Skipping batch")
# print(e)
return batches
batches = _int_load()
print("Beginning iteration")
for i in tqdm(range(0, len(batches)), ncols=30):
imgs_A, imgs_B = batches[i]
yield np.array(imgs_A.values, dtype=np.float32), np.array(imgs_B.values, dtype=np.float32)
# def load_random_batch(batch_size=32, batch_amount=1000000):
# iterable = list(Y_train.index)
# # shuffle(iterable)
# ixs = list(np.array(iterable)[random.sample(range(0, len(iterable)), batch_size)])
# imgs_A = X_train.loc[ixs]
# imgs_B = Y_train.loc[ixs]
# def test_nan(a,b):
# return np.isnan(a).any().any() or np.isnan(b).any().any()
# while True:
# if(test_nan(imgs_A,imgs_B)):
# ixs = list(np.array(iterable)[random.sample(range(0, len(iterable)), batch_size)])
# imgs_A = X_train.loc[ixs]
# imgs_B = Y_train.loc[ixs]
# else:
# break
# return imgs_A, imgs_B
#
# def exp_decay(epoch):
# initial_lrate = 0.1
# k = 0.1
# lrate = initial_lrate * math.exp(-k * epoch)
# return lrate
# noise = np.random.normal(size=(1, dimensionality), scale=0.001)
# noise = np.tile(noise,(batch_size,1))
dis_train_amount = dis_train_amount
self.compile_all("adam")
# ds = tf.data.Dataset.from_generator(load_batch,(tf.float32,tf.float32),args=(batch_size,))
# ds = ds.batch(batch_size).prefetch(tf.data.experimental.AUTOTUNE)
def train_(training_epochs, always_random=False):
global_step = 0
for epoch in range(training_epochs):
# noise = np.random.normal(size=(batch_size, dimensionality), scale=0.01)
for batch_i, (imgs_A, imgs_B) in enumerate(load_batch(batch_size, always_random=always_random)):
global_step += 1
# for batch_i, (imgs_A, imgs_B) in enumerate(ds):
# try:
# if epoch % 2 == 0:
# # print("Adding noise")
# imgs_A = np.add(noise[0:imgs_A.shape[0], :], imgs_A)
# imgs_B = np.add(noise[0:imgs_B.shape[0], :], imgs_B)
# imgs_A = tf.cast(imgs_A, tf.float32)
# imgs_B = tf.cast(imgs_B, tf.float32)
fake_B = self.g_AB.predict(imgs_A)
fake_A = self.g_BA.predict(imgs_B)
fake_ABBA = self.g_BA.predict(fake_B)
fake_BAAB = self.g_AB.predict(fake_A)
# Train the discriminators (original images = real / translated = Fake)
dA_loss = None
dB_loss = None
valid = np.ones((imgs_A.shape[0],)) # *noisy_entries_num,) )
fake = np.zeros((imgs_A.shape[0],)) # *noisy_entries_num,) )
# self.d_A.trainable = True
# self.d_B.trainable = True
for _ in range(int(dis_train_amount)):
# da = self.d_A.evaluate(imgs_A)
dA_loss_real = self.d_A.train_on_batch(imgs_A, valid)
# daf = self.d_A(fake_A)
dA_loss_fake = self.d_A.train_on_batch(fake_A, fake)
if dA_loss is None:
dA_loss = 0.5 * np.add(dA_loss_real, dA_loss_fake)
else:
dA_loss += 0.5 * np.add(dA_loss_real, dA_loss_fake)
dB_loss_real = self.d_B.train_on_batch(imgs_B, valid)
dB_loss_fake = self.d_B.train_on_batch(fake_B, fake)
if dB_loss is None:
dB_loss = 0.5 * np.add(dB_loss_real, dB_loss_fake)
else:
dB_loss += 0.5 * np.add(dB_loss_real, dB_loss_fake)
d_loss = (1.0 / dis_train_amount) * 0.5 * np.add(dA_loss, dB_loss)
# self.d_A.trainable = False
# self.d_B.trainable = False
def CycleCondLoss(d_ground, d_approx):
l = tf.math.log(d_ground) + tf.math.log(1 - d_approx)
return -1 * tf.reduce_mean(l)
# train cycle discriminators
d_cycle_dis = 0
g_cycle_dis = 0
if self.cycle_dis:
with tf.GradientTape() as tape:
dA = self.d_ABBA(tf.concat([fake_B, imgs_A], 1))
dA_r = self.d_ABBA(tf.concat([fake_B, fake_ABBA], 1))
la = CycleCondLoss(dA, dA_r)
tga = tape.gradient(la, self.d_ABBA.trainable_variables)
self.d_ABBA.optimizer.apply_gradients(zip(tga, self.d_ABBA.trainable_variables))
d_cycle_dis += la
with tf.GradientTape() as tape:
dB = self.d_BAAB(tf.concat([fake_A, imgs_B], 1))
dB_r = self.d_BAAB(tf.concat([fake_A, fake_BAAB], 1))
lb = CycleCondLoss(dB, dB_r)
tgb = tape.gradient(lb, self.d_BAAB.trainable_variables)
self.d_BAAB.optimizer.apply_gradients(zip(tgb, self.d_BAAB.trainable_variables))
d_cycle_dis += lb
with tf.GradientTape() as tape:
fake_B = self.g_AB(imgs_A)
fake_A = self.g_BA(imgs_B)
fake_ABBA = self.g_BA(fake_B)
fake_BAAB = self.g_AB(fake_A)
dB = self.d_BAAB(tf.concat([fake_A, imgs_B], 1))
dB_r = self.d_BAAB(tf.concat([fake_A, fake_BAAB], 1))
dA = self.d_ABBA(tf.concat([fake_B, imgs_A], 1))
dA_r = self.d_ABBA(tf.concat([fake_B, fake_ABBA], 1))
la = CycleCondLoss(dA, dA_r)
lb = CycleCondLoss(dB, dB_r)
tga = tape.gradient((la + lb) / 2.0, self.combined.trainable_variables)
self.combined.optimizer.apply_gradients(zip(tga, self.combined.trainable_variables))
g_cycle_dis += (la + lb) / 2.0
# Calculate the max margin loss for A->B, B->A
mm_b_loss = 0
mm_a_loss = 0
if self.one_way_mm:
mm_a_loss = self.g_AB.train_on_batch(imgs_A, imgs_B)
mm_b_loss = self.g_BA.train_on_batch(imgs_B, imgs_A)
# Calculate the cycle A->B->A, B->A->B with max margin, and mae
# Train cycle dis
g_loss = self.combined.train_on_batch([imgs_A, imgs_B],
[valid, valid,
imgs_A, imgs_B,
imgs_A, imgs_B,
imgs_A, imgs_B,
# valid,valid,
# valid,valid
])
def named_logs(model, logs):
result = {}
for l in zip(model.metrics_names, logs):
result[l[0]] = l[1]
return result
r = named_logs(self.combined, g_loss)
r.update({
'mma': mm_a_loss,
'mmb': mm_b_loss,
})
elapsed_time = datetime.datetime.now() - start_time
if batch_i % 50 == 0 and batch_i != 0:
print(
"\n[Epoch %d/%d] [Batch %d] [D loss: %f, acc: %3d%%] "
"[G loss: %05f, adv: %05f, recon: %05f, recon_mm: %05f,id: %05f][mma:%05f,mmb:%05f]time: %s " \
% (epoch, training_epochs,
batch_i,
d_loss[0], 100 * d_loss[1],
g_loss[0],
np.mean(g_loss[1:3]),
np.mean(g_loss[3:5]),
np.mean(g_loss[5:7]),
np.mean(g_loss[7:8]),
mm_a_loss,
mm_b_loss,
elapsed_time))
scalars = {
"epoch": epoch,
# "batch": batch_i,
"global_step": global_step,
"discriminator_loss": d_loss[0],
"discriminator_acc": d_loss[1],
"combined_loss": g_loss[0]+g_cycle_dis+d_cycle_dis,
"loss": g_loss[0] + d_loss[0],
"cycle_da": g_loss[1],
"cycle_db": g_loss[2],
"cycle_dis": d_cycle_dis,
"cycle_gen_condis":g_cycle_dis,
"MM_ABBA_CYCLE": g_loss[5],
"MM_BAAB_CYCLE": g_loss[6],
"abba_mae": g_loss[3],
"baab_mae": g_loss[4],
"idloss_ab": g_loss[7],
"idloss_ba": g_loss[8],
"mm_ab_loss": mm_a_loss,
"mm_ba_loss": mm_b_loss,
}
wandb.log(scalars, step=global_step)
# wandbcb.on_batch_end(batch_i, r)
# wandb.log({"batch_num":batch_i,"epoch_num":epoch})
# self.combined_callback.on_batch_end(batch_i, r)
print("\n")
sl, sv,c = self.test(dataset)
if epoch % epochs_per_checkpoint == 0 and epoch != 0:
self.save_model(name="checkpoint")
res.append((sl, sv, c))
wandb.log({"simlex": sl, "simverb": sv, "card":c,"epoch": epoch})
# self.combined_callback.on_epoch_end(epoch, {"simlex": sl, "simverb": sv})
# wandbcb.on_epoch_end(epoch, {"simlex": sl, "simverb": sv})
print(res)
print("\n")
print("Actual training")
train_(epochs)
print("Final performance")
sl, sv,c = self.test(dataset)
res.append((sl, sv,c))
self.save_model(name="final")
return res
def test(self, dataset, simlex="testing/SimLex-999.txt", simverb="testing/SimVerb-3500.txt",card="testing/card660.tsv",
fasttext="fasttext_model/cc.en.300.bin",
prefix="en_"):
sl = tools.test_sem(self.g_AB, dataset, dataset_location=simlex,
fast_text_location=fasttext, prefix=prefix,pt=False)[0]
sv = tools.test_sem(self.g_AB, dataset, dataset_location=simverb,
fast_text_location=fasttext, prefix=prefix,pt=False)[0]
c = tools.test_sem(self.g_AB, dataset, dataset_location=card,
fast_text_location=fasttext, prefix=prefix,pt=False)[0]
return sl, sv,c
def save_model(self, name=""):
self.d_A.save(os.path.join(self.save_folder, name + "fromretrodis.h5"), include_optimizer=False)
self.d_B.save(os.path.join(self.save_folder, name + "toretrodis.h5"), include_optimizer=False)
self.g_AB.save(os.path.join(self.save_folder, name + "toretrogen.h5"), include_optimizer=False)
self.g_BA.save(os.path.join(self.save_folder, name + "fromretrogen.h5"), include_optimizer=False)
self.combined.save(os.path.join(self.save_folder, name + "combined_model.h5"), include_optimizer=False)
class BaseKerasModel(BaseModel):
model = None
tensorboard = None
train_names = ['train_loss', 'train_mse', 'train_mae']
val_names = ['val_loss', 'val_mse', 'val_mae']
counter = 0
inputs = None
hidden_layer = None
outputs = None
def __init__(self,
use_default_dense=True,
activation='relu',
kernel_regularizer=tf.keras.regularizers.l1(0.001)):
super().__init__()
if use_default_dense:
self.activation = activation
self.kernel_regularizer = kernel_regularizer
def create_input_layer(self, input_placeholder: BaseInputFormatter):
"""Creates keras model"""
self.inputs = tf.keras.layers.InputLayer(
input_shape=input_placeholder.get_input_state_dimension())
return self.inputs
def create_hidden_layers(self, input_layer=None):
if input_layer is None:
input_layer = self.inputs
hidden_layer = tf.keras.layers.Dropout(0.3)(input_layer)
hidden_layer = tf.keras.layers.Dense(
128,
kernel_regularizer=self.kernel_regularizer,
activation=self.activation)(hidden_layer)
hidden_layer = tf.keras.layers.Dropout(0.4)(hidden_layer)
hidden_layer = tf.keras.layers.Dense(
64,
kernel_regularizer=self.kernel_regularizer,
activation=self.activation)(hidden_layer)
hidden_layer = tf.keras.layers.Dropout(0.3)(hidden_layer)
hidden_layer = tf.keras.layers.Dense(
32,
kernel_regularizer=self.kernel_regularizer,
activation=self.activation)(hidden_layer)
hidden_layer = tf.keras.layers.Dropout(0.1)(hidden_layer)
self.hidden_layer = hidden_layer
return self.hidden_layer
def create_output_layer(self,
output_formatter: BaseOutputFormatter,
hidden_layer=None):
# sigmoid/tanh all you want on self.model
if hidden_layer is None:
hidden_layer = self.hidden_layer
self.outputs = tf.keras.layers.Dense(
output_formatter.get_model_output_dimension()[0],
activation='tanh')(hidden_layer)
self.model = Model(inputs=self.inputs, outputs=self.outputs)
return self.outputs
def write_log(self, callback, names, logs, batch_no, eval=False):
for name, value in zip(names, logs):
summary = tf.Summary()
summary_value = summary.value.add()
summary_value.simple_value = value
tag_name = name
if eval:
tag_name = 'eval_' + tag_name
summary_value.tag = tag_name
callback.writer.add_summary(summary, batch_no)
callback.writer.flush()
def finalize_model(self, logname=str(int(random() * 1000))):
loss, loss_weights = self.create_loss()
self.model.compile(tf.keras.optimizers.Nadam(lr=0.001),
loss=loss,
loss_weights=loss_weights,
metrics=[
tf.keras.metrics.mean_absolute_error,
tf.keras.metrics.binary_accuracy
])
log_name = './logs/' + logname
self.logger.info("log_name: " + log_name)
self.tensorboard = tf.keras.callbacks.TensorBoard(
log_dir=log_name,
histogram_freq=1,
write_images=False,
batch_size=1000,
)
self.tensorboard.set_model(self.model)
self.logger.info("Model has been finalized")
def fit(self, x, y, batch_size=1):
if self.counter % 200 == 0:
logs = self.model.evaluate(x, y, batch_size=batch_size, verbose=1)
self.write_log(self.tensorboard,
self.model.metrics_names,
logs,
self.counter,
eval=True)
print('step:', self.counter)
else:
logs = self.model.train_on_batch(x, y)
self.write_log(self.tensorboard, self.model.metrics_names, logs,
self.counter)
self.counter += 1
def predict(self, arr):
return self.model.predict(arr)
def save(self, file_path):
self.model.save_weights(filepath=file_path, overwrite=True)
def load(self, file_path):
path = os.path.abspath(file_path)
self.model.load_weights(filepath=os.path.abspath(file_path))
def create_loss(self):
return 'mean_absolute_error', None
reconstruction_loss = mse(inputs, outputs)
else:
reconstruction_loss = binary_crossentropy(inputs, outputs)
reconstruction_loss *= original_dim
kl_loss = 1 + z_log_var - K.square(z_mean) - K.exp(z_log_var)
kl_loss = K.sum(kl_loss, axis=-1)
kl_loss *= -0.5
vae_loss = K.mean(reconstruction_loss + kl_loss)
vae.add_loss(vae_loss)
vae.compile(optimizer='adam')
vae.summary()
plot_model(vae, to_file='vae_mlp.png', show_shapes=True)
if args.weights:
vae.load_weights(args.weights)
else:
# train the autoencoder
vae.fit(x_train,
epochs=epochs,
batch_size=batch_size,
validation_data=(x_test, None))
vae.save_weights('vae_mlp_mnist.h5')
plot_results(models, data, batch_size=batch_size, model_name="vae_mlp")
# # plot the latent space of the encoded digits #########################################
# x_test_encoded = encoder.predict(x_test, batch_size=batch_size)
# plt.figure(figsize=(6, 6))
# plt.scatter(x_test_encoded[:, 0], x_test_encoded[:, 1], c=y_test)
# plt.colorbar()
