def test_mnist():
import os
os.environ['CUDA_VISIBLE_DEVICES']="2"
os.environ['TF_FORCE_GPU_ALLOW_GROWTH']="true"
#os.environ['TF_CPP_MIN_LOG_LEVEL'] = '2'
import keras
from keras.datasets import mnist,cifar10
from keras.models import Sequential
from keras.layers import Dense, Dropout, Flatten, Input, Add, ReLU
from keras.layers import Conv2D, MaxPooling2D, AveragePooling2D, GlobalAveragePooling2D
from keras.layers import BatchNormalization,Activation, Concatenate
from keras.regularizers import l2,l1
from keras.callbacks import LearningRateScheduler, ModelCheckpoint, TensorBoard
from keras_preprocessing.image import ImageDataGenerator
from keras.optimizers import SGD, Adadelta
#from keras.initializers import glorot_uniform as w_ini
from keras.initializers import he_uniform as w_ini
from keras.initializers import VarianceScaling as VS_ini
from keras import backend as K
from keras_utils import RecordVariable, PrintLayerVariableStats, SGDwithLR
#config = tf.ConfigProto()
#config.gpu_options.allow_growth = True
#config.gpu_options.per_process_gpu_memory_fraction = 0.1
# Create a session with the above options specified.
#K.tensorflow_backend.set_session(tf.Session(config=config))
sid = 9
#sess = K.get_session()
K.clear_session()
#sess = tf.Session(graph=g)
#K.set_session(sess)
np.random.seed(sid)
tf.random.set_random_seed(sid)
tf.compat.v1.random.set_random_seed(sid)
#dset='cifar10'
dset = 'mnist'
batch_size = 512
num_classes = 10
epochs =200
test_acnn = True
regulazer = None
prfw = 5
fw = 5
residual = False
data_augmentation = False
if dset=='mnist':
# input image dimensions
img_rows, img_cols = 28, 28
# the data, split between train and test sets
(x_train, y_train), (x_test, y_test) = mnist.load_data()
n_channels=1
elif dset=='cifar10':
img_rows, img_cols = 32,32
n_channels=3
(x_train, y_train), (x_test, y_test) = cifar10.load_data()
if K.image_data_format() == 'channels_first':
x_train = x_train.reshape(x_train.shape[0], n_channels, img_rows, img_cols)
x_test = x_test.reshape(x_test.shape[0], n_channels, img_rows, img_cols)
input_shape = (n_channels, img_rows, img_cols)
else:
x_train = x_train.reshape(x_train.shape[0], img_rows, img_cols, n_channels)
x_test = x_test.reshape(x_test.shape[0], img_rows, img_cols, n_channels)
input_shape = (img_rows, img_cols, n_channels)
x_train = x_train.astype('float32')
x_test = x_test.astype('float32')
x_train /= 255
x_test /= 255
trn_mn = np.mean(x_train, axis=0)
x_train -= trn_mn
x_test -= trn_mn
print('x_train shape:', x_train.shape)
print(x_train.shape[0], 'train samples')
print(x_test.shape[0], 'test samples')
# convert class vectors to binary class matrices
y_train = keras.utils.to_categorical(y_train, num_classes)
y_test = keras.utils.to_categorical(y_test, num_classes)
network=[]
network.append(Input(shape=input_shape))
# if test_acnn:
#
# prev_layer = network[-1]
#
#
# conv_node = Conv2DAdaptive(rank=2,nfilters=32,kernel_size=(fw,fw),
# data_format='channels_last',strides=1,
# padding='same',name='acnn-1', activation='linear',
# trainSigmas=True, trainWeights=True,
# init_sigma=[0.15,1.0],
# gain = np.sqrt(1.0),
# kernel_regularizer=None,
# init_bias=initializers.Constant(0))(prev_layer)
# if residual:
# network.append(Add()([conv_node,prev_layer]))
# else:
# network.append(conv_node)
# #, input_shape=input_shape))
# else:
#
# network.append(Conv2D(24, (fw, fw), activation='linear',
# kernel_initializer=w_ini(),
# kernel_regularizer=None,
# padding='same')(network[-1]))
network.append(Conv2D(32, kernel_size=(prfw, prfw),
activation='linear',padding='same', kernel_initializer=w_ini(),
kernel_regularizer=regulazer)(network[-1]))
network.append(BatchNormalization()(network[-1]))
network.append(Activation('relu')(network[-1]))
network.append(Dropout(0.2)(network[-1]))
network.append(Conv2D(32, (prfw, prfw), activation='linear',
kernel_initializer=w_ini(), padding='same',
kernel_regularizer=regulazer)(network[-1]))
#odel.add(MaxPooling2D(pool_size=(2, 2)))
network.append(BatchNormalization()(network[-1]))
network.append(Activation('relu')(network[-1]))
network.append(Dropout(0.2)(network[-1]))
# model.add(Conv2D(32, (3, 3), activation='linear',
# kernel_initializer=w_ini(), padding='same',
# kernel_regularizer=regulazer))
# #odel.add(MaxPooling2D(pool_size=(2, 2)))
# model.add(BatchNormalization())
# model.add(Activation('relu'))
#
# model.add(Dropout(0.2))
#
#odel.add(Dense(128, activation='relu'))
#odel.add(Dropout(0.25))
#=============================================================================
nfilter= 32
if test_acnn:
prev_layer = network[-1]
conv_node = Conv2DAdaptive(rank=2,nfilters=nfilter,kernel_size=(fw,fw),
data_format='channels_last',strides=1,
padding='same',name='acnn-1', activation='linear',
trainSigmas=True, trainWeights=True,
init_sigma=[0.25,0.75],
gain = 1.0,
kernel_regularizer=None,
init_bias=initializers.Constant(0),
norm=2)(prev_layer)
if residual:
network.append(Add()([conv_node,prev_layer]))
else:
network.append(conv_node)
#, input_shape=input_shape))
else:
#fw = 7
#v_ini = VS_ini(scale=0.25,mode='fan_in',distribution='uniform')
network.append(Conv2D(nfilter, (fw, fw), activation='linear',
kernel_initializer=w_ini(),
kernel_regularizer=None,
padding='same')(network[-1]))
#, input_shape=input_shape))
network.append(BatchNormalization()(network[-1]))
network.append(ReLU()(network[-1]))
#network.append(ReLU(negative_slope=0.01)(network[-1]))
#network.append(Activation('selu'))
network.append(MaxPooling2D(pool_size=(2,2))(network[-1]))
print("MAY BE MAXPOOL LAYER IS AFFECTING SIGNAL ")
network.append(Dropout(0.2)(network[-1]))
#model.add(keras.layers.AlphaDropout(0.2))
#network.append(GlobalAveragePooling2D()(network[-1]))
network.append(Flatten()(network[-1]))
network.append(Dense(units=128, activation='linear',
kernel_regularizer=regulazer)(network[-1]))
network.append(BatchNormalization()(network[-1]))
network.append(ReLU()(network[-1]))
network.append(Dropout(0.2)(network[-1]))
network.append(Dense(num_classes, activation='softmax',
kernel_regularizer=regulazer)(network[-1]))
model = keras.models.Model(inputs=[network[0]], outputs=network[-1])
model.summary()
print("MAY BE MAXPOOL LAYER IS AFFECTING SIGNAL ")
from lr_multiplier import LearningRateMultiplier
#lr=0.001
#multipliers = {'acnn-1/Sigma:0': 1.0,'acnn-1/Weights:0': 1000.0,
# 'acnn-2/Sigma:0': 1.0,'acnn-2/Weights:0': 1000.0}
#opt = LearningRateMultiplier(SGD, lr_multipliers=multipliers,
# lr=lr, momentum=0.9,decay=0)
#opt= SGD(lr=lr,momentum=0.9,decay=0,nesterov=False)
'''lr_dict = {'all':0.01,'acnn-1/Sigma:0': 0.01,'acnn-1/Weights:0': 1.0,
'acnn-2/Sigma:0': 0.01,'acnn-2/Weights:0': 0.1}
mom_dict = {'all':0.9,'acnn-1/Sigma:0': 0.5,'acnn-1/Weights:0': 0.9,
'acnn-2/Sigma:0': 0.9,'acnn-2/Weights:0': 0.9}
decay_dict = {'all':0.95, 'acnn-1/Sigma:0': 0.05, 'acnn-1/Weights:0':0.95,
'acnn-1/Sigma:0': 0.05,'acnn-2/Weights:0': 0.95}
clip_dict = {'acnn-1/Sigma:0':(0.05,1.0),'acnn-2/Sigma:0':(0.05,1.0)}
'''
lr_dict = {'all':0.1,'acnn/Sigma:0': 0.1,'acnn/Weights:0': 0.1,
'acnn-2/Sigma:0': 0.0001,'acnn-2/Weights:0': 0.01}
mom_dict = {'all':0.9,'acnn/Sigma:0': 0.9,'acnn/Weights:0': 0.9,
'acnn-2/Sigma:0': 0.9,'acnn-2/Weights:0': 0.9}
clip_dict = {'acnn/Sigma:0': [0.1, 2.0]}
decay_dict = {}
decay_dict.update({'focus-1'+'/Sigma:0':0.9}) #best results 0.5
decay_dict.update({'focus-1'+'/Mu:0':0.9})
decay_dict.update({'all':0.9})
e_i = x_train.shape[0] // batch_size
decay_epochs =[e_i*10,e_i*30,e_i*60,e_i*90,e_i*100]
opt = SGDwithLR(lr=lr_dict, momentum = mom_dict, decay=decay_dict, clips=clip_dict,
decay_epochs=decay_epochs,clipvalue=0.01)
e_i = x_train.shape[0] // batch_size
#decay_epochs =np.array([e_i*10], dtype='int64') #for 20 epochs
#decay_epochs =np.array([e_i*10,e_i*80,e_i*120,e_i*160], dtype='int64')
#opt = SGDwithLR(lr_dict, mom_dict,decay_dict,clip_dict, decay_epochs)#, decay=None)
#opt= Adadelta()
#lr_scheduler = LearningRateScheduler(lr_schedule,lr)
# Prepare model model saving directory.
save_dir = os.path.join(os.getcwd(), 'saved_models')
if test_acnn:
model_name = '%s_acnn%dx_model.{epoch:03d}.h5'% (dset, fw)
else:
model_name = '%s_cnn%dx_model.{epoch:03d}.h5'% (dset, fw)
if not os.path.isdir(save_dir):
os.makedirs(save_dir)
filepath = os.path.join(save_dir, model_name)
print("Saving in ", filepath)
# # Prepare callbacks for model saving and for learning rate adjustment.
# checkpoint = ModelCheckpoint(filepath=filepath,
# monitor='val_acc',
# verbose=1,
# save_best_only=True)
chkpt= keras.callbacks.ModelCheckpoint('best-model.h5',
monitor='val_acc',
verbose=1,
save_best_only=True,
save_weights_only=True,
mode='max', period=1)
tb = TensorBoard(log_dir='./tb_logs/mnist/acnn-res-lr5',
histogram_freq = 1,
write_grads=True,
write_graph=False)
stat_func_name = ['max: ', 'mean: ', 'min: ', 'var: ', 'std: ']
stat_func_list = [np.max, np.mean, np.min, np.var, np.std]
callbacks = [tb]
callbacks = []
if test_acnn:
pr_1 = PrintLayerVariableStats("acnn-1","Weights:0",stat_func_list,stat_func_name)
pr_2 = PrintLayerVariableStats("acnn-1","Sigma:0",stat_func_list,stat_func_name)
rv_weights_1 = RecordVariable("acnn-1","Weights:0")
rv_sigma_1 = RecordVariable("acnn-1","Sigma:0")
callbacks+=[pr_1,pr_2,rv_weights_1,rv_sigma_1]
else:
pr_1 = PrintLayerVariableStats("conv2d_3","kernel:0",stat_func_list,stat_func_name)
rv_weights_1 = RecordVariable("conv2d_3","kernel:0")
callbacks+=[pr_1, rv_weights_1]
pr_3 = PrintLayerVariableStats("conv2d_1","kernel:0",stat_func_list,stat_func_name)
rv_kernel = RecordVariable("conv2d_1","kernel:0")
callbacks+=[pr_3,rv_kernel]
print("CALLBACKS:",callbacks)
print("TRAINABLE WEIGHTS:",model.trainable_weights)
print("WARNING by BTEK: if you see An operation has `None` for gradient. \
Please make sure that all of your ops have a gradient defined \
(i.e. are differentiable). Common ops without gradient: \
K.argmax, K.round, K.eval. REMOVE TENSORBOARD CALLBACK OR EDIT IT!")
#print(opt)
#opt = SGD(lr=0.01,momentum=0.9)
model.compile(loss=keras.losses.categorical_crossentropy,
optimizer=opt,
metrics=['accuracy'])
plt = False
if plt and test_acnn:
print("Plotting kernels before...")
import matplotlib.pyplot as plt
acnn_layer = model.get_layer('acnn-1')
ws = acnn_layer.get_weights()
print("Sigmas before",ws[0])
u_func = K.function(inputs=[model.input], outputs=[acnn_layer.U()])
output_func = K.function(inputs=[model.input], outputs=[acnn_layer.output])
U_val=u_func([np.expand_dims(x_test[0], axis=0)])
print("U shape", U_val[0].shape)
print("U max:", np.max(U_val[0][:,:,:,:]))
num_filt=min(U_val[0].shape[3],12)
fig=plt.figure(figsize=(20,8))
for i in range(num_filt):
ax1=plt.subplot(1, num_filt, i+1)
im = ax1.imshow(np.squeeze(U_val[0][:,:,0,i]))
fig.colorbar(im, ax=ax1)
plt.show(block=False)
fig=plt.figure(figsize=(20,8))
num_show = min(U_val[0].shape[3],12)
indices = np.int32(np.linspace(0,U_val[0].shape[3]-1,num_show))
for i in range(num_show):
ax1=plt.subplot(1, num_filt, i+1)
#print("U -shape: ", acnn_layer.U().shape,type(K.eval(acnn_layer.U()[:,:,0,i])))
#print("Prod-shape", (ws[1][:,:,0,i]*acnn_layer.U()[:,:,0,i]).shape)
plt.imshow(np.float32(ws[1][:,:,0,indices[i]]*
K.eval(acnn_layer.U()[:,:,0,indices[i]])))
plt.show(block=False)
# Run training, with or without data augmentation.
if not data_augmentation:
print('Not using data augmentation.')
model.fit(x_train, y_train,
batch_size=batch_size,
epochs=epochs,
validation_data=(x_test, y_test),
shuffle=True,
callbacks=callbacks,verbose=2)
else:
print('Using real-time data augmentation.')
# This will do preprocessing and realtime data augmentation:
datagen = ImageDataGenerator(
# set input mean to 0 over the dataset
featurewise_center=False,
# set each sample mean to 0
samplewise_center=False,
# divide inputs by std of dataset
featurewise_std_normalization=False,
# divide each input by its std
samplewise_std_normalization=False,
# apply ZCA whitening
zca_whitening=False,
# epsilon for ZCA whitening
zca_epsilon=1e-06,
# randomly rotate images in the range (deg 0 to 180)
rotation_range=0,
# randomly shift images horizontally
width_shift_range=0.1,
# randomly shift images vertically
height_shift_range=0.1,
# set range for random shear
shear_range=0.,
# set range for random zoom
zoom_range=0.,
# set range for random channel shifts
channel_shift_range=0.,
# set mode for filling points outside the input boundaries
fill_mode='nearest',
# value used for fill_mode = "constant"
cval=0.,
# randomly flip images
horizontal_flip=True,
# randomly flip images
vertical_flip=False,
# set rescaling factor (applied before any other transformation)
rescale=None,
# set function that will be applied on each input
preprocessing_function=None,
# image data format, either "channels_first" or "channels_last"
data_format='channels_last',
# fraction of images reserved for validation (strictly between 0 and 1)
validation_split=0.0)
# Compute quantities required for featurewise normalization
# (std, mean, and principal components if ZCA whitening is applied).
datagen.fit(x_train)
# Fit the model on the batches generated by datagen.flow().
model.fit_generator(datagen.flow(x_train, y_train, batch_size=batch_size),
validation_data=(x_test, y_test),
epochs=epochs, verbose=2, workers=4,
callbacks=callbacks,
steps_per_epoch=x_train.shape[0]//batch_size)
score = model.evaluate(x_test, y_test, verbose=0)
print('Test loss:', score[0])
print('Test accuracy:', score[1])
if plt and test_acnn:
print("Plotting kernels after ...")
print("U max:", np.max(U_val[0][:,:,:,:]))
import matplotlib.pyplot as plt
ws = acnn_layer.get_weights()
print("Sigmas after",ws[0])
U_val=u_func([np.expand_dims(x_test[2], axis=0)])
print("U shape", U_val[0].shape)
num_filt=min(U_val[0].shape[3],12)
indices = np.int32(np.linspace(0,U_val[0].shape[3]-1,num_filt))
fig=plt.figure(figsize=(16,5))
for i in range(num_filt):
ax=plt.subplot(1, num_filt, i+1)
kernel_u = U_val[0][:,:,0,indices[i]]
im = ax.imshow(np.squeeze(kernel_u))
print("kernel mean,var,max,min",np.mean(kernel_u),
np.var(kernel_u),
np.max(kernel_u), np.min(kernel_u))
#fig.colorbar(im, ax=ax1)
plt.show(block=False)
print("outputs ...")
n=5
out_val=output_func([np.expand_dims(x_test[5], axis=0)])
print("Outputs shape", out_val[0].shape)
num_filt=min(out_val[0].shape[3],12)
indices = np.int32(np.linspace(0,out_val[0].shape[3]-1,num_filt))
fig=plt.figure(figsize=(20,8))
ax=plt.subplot(1, num_filt+1, 1)
im = ax.imshow(np.squeeze(x_test[5]))
print(y_test[5])
print("input mean,var,max",np.mean(x_test[n]),np.var(x_test[n]),np.max(x_test[n]))
for i in range(num_filt):
ax=plt.subplot(1, num_filt+1, i+2)
out_im = out_val[0][0,:,:,indices[i]]
im = ax.imshow(np.squeeze(out_im))
print("ouput mean,var,max",np.mean(out_im),
np.var(out_im),
np.max(out_im),np.min(out_im))
#plt.colorbar(im,ax=ax)
plt.show(block=False)
print("Weights")
fig=plt.figure(figsize=(20,8))
num_show = min(U_val[0].shape[3],12)
indices = np.int32(np.linspace(0,U_val[0].shape[3]-1,num_show))
for i in range(num_show):
ax1=plt.subplot(1, num_filt, i+1)
#print("U -shape: ", acnn_layer.U().shape,type(K.eval(acnn_layer.U()[:,:,0,i])))
#print("Prod-shape", (ws[1][:,:,0,i]*acnn_layer.U()[:,:,0,i]).shape)
plt.imshow(np.float32(ws[1][:,:,0,indices[i]]),cmap='gray')
plt.show(block=False)
print("ACNN Filters after")
fig=plt.figure(figsize=(20,8))
num_show = min(U_val[0].shape[3],12)
indices = np.int32(np.linspace(0,U_val[0].shape[3]-1,num_show))
for i in range(num_show):
ax1=plt.subplot(1, num_filt, i+1)
#print("U -shape: ", acnn_layer.U().shape,type(K.eval(acnn_layer.U()[:,:,0,i])))
#print("Prod-shape", (ws[1][:,:,0,i]*acnn_layer.U()[:,:,0,i]).shape)
plt.imshow(np.float32(ws[1][:,:,0,indices[i]]*
K.eval(acnn_layer.U()[:,:,0,indices[i]])),cmap='gray')
plt.show(block=False)
cnn_layer = model.get_layer('conv2d_1')
wcnn = cnn_layer.get_weights()
print("CNN Filters of", cnn_layer)
fig=plt.figure(figsize=(20,8))
num_show = min(wcnn[0].shape[3],12)
indices = np.int32(np.linspace(0,wcnn[0].shape[3]-1,num_show))
for i in range(num_show):
ax1=plt.subplot(1, num_filt, i+1)
#print("U -shape: ", acnn_layer.U().shape,type(K.eval(acnn_layer.U()[:,:,0,i])))
#print("Prod-shape", (ws[1][:,:,0,i]*acnn_layer.U()[:,:,0,i]).shape)
plt.imshow(np.float32(wcnn[0][:,:,0,indices[i]]),cmap='gray')
plt.show(block=False)
rv_sigma_arr = np.array(rv_sigma_1.record)
fig=plt.figure(figsize=(4,8))
plt.plot(rv_sigma_arr)
plt.title('Sigma')
plt.show(block=False)
rv_weights_arr = np.array(rv_weights_1.record)
rv_weights_arr2d = np.reshape(rv_weights_arr,
(rv_weights_arr.shape[0],
np.prod(rv_weights_arr.shape[1:])))
print(rv_weights_arr.shape)
fig=plt.figure(figsize=(4,8))
klist=[1,1,5,9,12,15,18,25,32,132,1132]
for i in klist:
plt.plot(rv_weights_arr2d[:,i])
plt.title('weights-acnn')
plt.show(block=False)
rv_kernel_arr = np.array(rv_kernel.record)
rv_kernel_arr2d = np.reshape(rv_kernel_arr,
(rv_kernel_arr.shape[0],
np.prod(rv_kernel_arr.shape[1:])))
print(rv_kernel_arr.shape)
fig=plt.figure(figsize=(4,8))
klist=[1,1,5,9,12,15,18,25,32]
for i in klist:
plt.plot(rv_kernel_arr2d[:,i])
plt.title('weights-conv2d-1')
plt.show(block=False)
def test_comp(settings, random_sid=9):
import keras
from keras.optimizers import SGD
from keras.datasets import mnist, fashion_mnist, cifar10
from skimage import filters
from keras import backend as K
from keras_utils import WeightHistory as WeightHistory
from keras_utils import RecordVariable, \
PrintLayerVariableStats, PrintAnyVariable, SGDwithLR, eval_Kdict, standarize_image_025
from keras_preprocessing.image import ImageDataGenerator
K.clear_session()
epochs = settings['Epochs']
batch_size = settings['batch_size']
sid = random_sid
np.random.seed(sid)
tf.random.set_random_seed(sid)
tf.compat.v1.random.set_random_seed(sid)
# MINIMUM SIGMA CAN EFFECT THE PERFORMANCE.
# BECAUSE NEURON CAN GET SHRINK TOO MUCH IN INITIAL EPOCHS WITH LARGER GRADIENTS
#, and GET STUCK!
MIN_SIG = 0.01
MAX_SIG = 1.0
MIN_MU = 0.0
MAX_MU = 1.0
lr_dict = {'all': settings['lr_all']} #0.1 is default for MNIST
mom_dict = {'all': 0.9}
decay_dict = {'all': 0.9}
clip_dict = {}
for i, n in enumerate(settings['nhidden']):
lr_dict.update({'focus-' + str(i + 1) + '/Sigma:0': 0.01})
lr_dict.update({'focus-' + str(i + 1) + '/Mu:0': 0.01})
lr_dict.update({'focus-' + str(i + 1) + '/Weights:0': 0.1})
mom_dict.update({'focus-' + str(i + 1) + '/Sigma:0': 0.9})
mom_dict.update({'focus-' + str(i + 1) + '/Mu:0': 0.9})
decay_dict.update({'focus-' + str(i + 1) + '/Sigma:0': 0.5})
decay_dict.update({'focus-' + str(i + 1) + '/Mu:0': 0.9})
clip_dict.update(
{'focus-' + str(i + 1) + '/Sigma:0': (MIN_SIG, MAX_SIG)})
clip_dict.update({'focus-' + str(i + 1) + '/Mu:0': (MIN_MU, MAX_MU)})
print("Loading dataset")
if settings['dset'] == 'mnist':
# input image dimensions
img_rows, img_cols = 28, 28
# the data, split between train and test sets
(x_train, y_train), (x_test, y_test) = mnist.load_data()
n_channels = 1
e_i = x_train.shape[0] // batch_size
decay_epochs = np.array([e_i * 100, e_i * 150], dtype='int64')
if settings['cnn_model']:
decay_epochs = [e_i * 30, e_i * 100]
elif settings['dset'] == 'cifar10':
img_rows, img_cols = 32, 32
n_channels = 3
(x_train, y_train), (x_test, y_test) = cifar10.load_data()
# works good as high as 77 for cnn-focus
#decay_dict = {'all':0.9, 'focus-1/Sigma:0': 1.1,'focus-1/Mu:0':0.9,
# 'focus-2/Sigma:0': 1.1,'focus-2/Mu:0': 0.9}
#if cnn_model: batch_size=256 # this works better than 500 for cifar-10
e_i = x_train.shape[0] // batch_size
decay_epochs = np.array([e_i * 30, e_i * 80, e_i * 120, e_i * 180],
dtype='int64')
#decay_epochs =np.array([e_i*10], dtype='int64')
elif settings['dset'] == 'fashion':
img_rows, img_cols = 28, 28
n_channels = 1
(x_train, y_train), (x_test, y_test) = fashion_mnist.load_data()
e_i = x_train.shape[0] // batch_size
decay_epochs = np.array([e_i * 100, e_i * 150], dtype='int64')
if settings['cnn_model']:
decay_dict = {
'all': 0.9,
'focus-1/Sigma:0': 0.9,
'focus-1/Mu:0': 0.9,
'focus-2/Sigma:0': 0.9,
'focus-2/Mu:0': 0.9
}
decay_epochs = [e_i * 30, e_i * 100]
elif settings['dset'] == 'mnist-clut':
img_rows, img_cols = 60, 60
# the data, split between train and test sets
folder = '/media/home/rdata/image/'
data = np.load(folder + "mnist_cluttered_60x60_6distortions.npz")
x_train, y_train = data['x_train'], np.argmax(data['y_train'], axis=-1)
x_valid, y_valid = data['x_valid'], np.argmax(data['y_valid'], axis=-1)
x_test, y_test = data['x_test'], np.argmax(data['y_test'], axis=-1)
x_train = np.vstack((x_train, x_valid))
y_train = np.concatenate((y_train, y_valid))
n_channels = 1
lr_dict = {'all': 0.01}
e_i = x_train.shape[0] // batch_size
decay_epochs = np.array([e_i * 100, e_i * 150], dtype='int64')
if settings['cnn_model']:
decay_epochs = [e_i * 30, e_i * 100]
elif settings['dset'] == 'lfw_faces':
from sklearn.datasets import fetch_lfw_people
lfw_people = fetch_lfw_people(min_faces_per_person=20, resize=0.4)
# introspect the images arrays to find the shapes (for plotting)
n_samples, img_rows, img_cols = lfw_people.images.shape
n_channels = 1
X = lfw_people.data
n_features = X.shape[1]
# the label to predict is the id of the person
y = lfw_people.target
target_names = lfw_people.target_names
n_classes = target_names.shape[0]
print("Total dataset size:")
print("n_samples: %d" % n_samples)
print("n_features: %d" % n_features)
print("n_classes: %d" % n_classes)
from sklearn.model_selection import train_test_split
#X -= X.mean()
#X /= X.std()
#split into a training and testing set
x_train, x_test, y_train, y_test = train_test_split(X,
y,
test_size=0.25,
random_state=42)
import matplotlib.pyplot as plt
plt.imshow(X[0].reshape((img_rows, img_cols)))
plt.show()
lr_dict = {'all': 0.001}
e_i = x_train.shape[0] // batch_size
decay_epochs = np.array([e_i * 50, e_i * 100, e_i * 150],
dtype='int64')
num_classes = np.unique(y_train).shape[0]
if K.image_data_format() == 'channels_first':
x_train = x_train.reshape(x_train.shape[0], n_channels, img_rows,
img_cols)
x_test = x_test.reshape(x_test.shape[0], n_channels, img_rows,
img_cols)
input_shape = (n_channels, img_rows, img_cols)
else:
x_train = x_train.reshape(x_train.shape[0], img_rows, img_cols,
n_channels)
x_test = x_test.reshape(x_test.shape[0], img_rows, img_cols,
n_channels)
input_shape = (img_rows, img_cols, n_channels)
if settings['dset'] != 'mnist-clut':
x_train = x_train.astype('float32')
x_test = x_test.astype('float32')
x_train, _, x_test = standarize_image_025(x_train, tst=x_test)
x_train = x_train.reshape(x_train.shape[0], img_rows, img_cols,
n_channels)
x_test = x_test.reshape(x_test.shape[0], img_rows, img_cols,
n_channels)
input_shape = (img_rows, img_cols, n_channels)
print('x_train shape:', x_train.shape)
print(x_train.shape[0], 'train samples')
print(x_test.shape[0], 'test samples')
# convert class vectors to binary class matrices
y_train = keras.utils.to_categorical(y_train, num_classes)
y_test = keras.utils.to_categorical(y_test, num_classes)
sigma_reg = settings['focus_sigma_reg']
sigma_reg = keras.regularizers.l2(
sigma_reg) if sigma_reg is not None else sigma_reg
settings['focus_sigma_reg'] = sigma_reg
if settings['cnn_model']:
model = create_cnn_model(input_shape, num_classes, settings=settings)
else:
model = create_simple_model(input_shape,
num_classes,
settings=settings)
model.summary()
print(lr_dict)
print(mom_dict)
print(decay_dict)
print(clip_dict)
opt = SGDwithLR(lr_dict, mom_dict, decay_dict, clip_dict,
decay_epochs) #, decay=None)
model.compile(loss=keras.losses.categorical_crossentropy,
optimizer=opt,
metrics=['accuracy'])
stat_func_name = ['max: ', 'mean: ', 'min: ', 'var: ', 'std: ']
stat_func_list = [np.max, np.mean, np.min, np.var, np.std]
#callbacks = [tb]
callbacks = []
if settings['neuron'] == 'focused':
pr_1 = PrintLayerVariableStats("focus-1", "Weights:0", stat_func_list,
stat_func_name)
pr_2 = PrintLayerVariableStats("focus-1", "Sigma:0", stat_func_list,
stat_func_name)
pr_3 = PrintLayerVariableStats("focus-1", "Mu:0", stat_func_list,
stat_func_name)
rv_weights_1 = RecordVariable("focus-1", "Weights:0")
rv_sigma_1 = RecordVariable("focus-1", "Sigma:0")
rv_mu_1 = RecordVariable("focus-1", "Mu:0")
print_lr_rates_callback = keras.callbacks.LambdaCallback(
on_epoch_end=lambda epoch, logs: print(
"iter: ", K.eval(model.optimizer.iterations), " LR RATES :",
eval_Kdict(model.optimizer.lr)))
callbacks += [
pr_1, pr_2, pr_3, rv_weights_1, rv_sigma_1, rv_mu_1,
print_lr_rates_callback
]
if not settings['augment']:
print('Not using data augmentation.')
history = model.fit(x_train,
y_train,
batch_size=batch_size,
epochs=epochs,
validation_data=(x_test, y_test),
shuffle=True,
callbacks=callbacks)
else:
print('Using real-time data augmentation.')
# This will do preprocessing and realtime data augmentation:
datagen = ImageDataGenerator(
# set input mean to 0 over the dataset
featurewise_center=False,
# set each sample mean to 0
samplewise_center=False,
# divide inputs by std of dataset
featurewise_std_normalization=False,
# divide each input by its std
samplewise_std_normalization=False,
# apply ZCA whitening
zca_whitening=False,
# epsilon for ZCA whitening
zca_epsilon=1e-06,
# randomly rotate images in the range (deg 0 to 180)
rotation_range=0,
# randomly shift images horizontally
width_shift_range=0.1,
# randomly shift images vertically
height_shift_range=0.1,
# set range for random shear
shear_range=0.,
# set range for random zoom
zoom_range=0.,
# set range for random channel shifts
channel_shift_range=0.,
# set mode for filling points outside the input boundaries
fill_mode='nearest',
# value used for fill_mode = "constant"
cval=0.,
# randomly flip images
horizontal_flip=True,
# randomly flip images
vertical_flip=False,
# set rescaling factor (applied before any other transformation)
rescale=None,
# set function that will be applied on each input
preprocessing_function=None,
# image data format, either "channels_first" or "channels_last"
data_format='channels_last',
# fraction of images reserved for validation (strictly between 0 and 1)
validation_split=0.0)
# Compute quantities required for featurewise normalization
# (std, mean, and principal components if ZCA whitening is applied).
datagen.fit(x_train)
# Fit the model on the batches generated by datagen.flow().
history = model.fit_generator(datagen.flow(x_train,
y_train,
batch_size=batch_size),
validation_data=(x_test, y_test),
epochs=epochs,
verbose=1,
workers=4,
callbacks=callbacks,
steps_per_epoch=x_train.shape[0] //
batch_size)
score = model.evaluate(x_test, y_test, verbose=0)
print('Test loss:', score[0])
print('Test accuracy:', score[1])
return score, history, model, callbacks
def test():
import os
os.environ['CUDA_VISIBLE_DEVICES']="0"
os.environ['TF_FORCE_GPU_ALLOW_GROWTH']="true"
from keras.losses import mse
import keras
from keras.datasets import mnist,fashion_mnist, cifar10
from keras.models import Sequential, Model
from keras.layers import Input, Dense, Dropout, Flatten, Conv2D
from skimage import filters
from keras import backend as K
from keras_utils import WeightHistory as WeightHistory
from keras_utils import RecordVariable, PrintLayerVariableStats, SGDwithLR
config = tf.ConfigProto()
config.gpu_options.per_process_gpu_memory_fraction = 0.1
# Create a session with the above options specified.
K.tensorflow_backend.set_session(tf.Session(config=config))
K.clear_session()
sid = 9
# restarting everything requires sess.close()
#g = tf.Graph()
#sess = tf.InteractiveSession(graph=g)
#sess = tf.Session(graph=g)
#K.set_session(sess)
np.random.seed(sid)
tf.random.set_random_seed(sid)
tf.compat.v1.random.set_random_seed(sid)
from datetime import datetime
now = datetime.now()
timestr = now.strftime("%Y%m%d-%H%M%S")
logdir = "tf_logs_cluttered/.../" + timestr + "/"
(x_train, y_train), (x_test, y_test) = mnist.load_data()
inputimg = x_train[0]/255
sh = (inputimg.shape[0],inputimg.shape[1],1)
outputimages = np.zeros(shape=[inputimg.shape[0],inputimg.shape[1],3],dtype='float32')
outputimages[:,:,0] = filters.gaussian(inputimg,sigma=1)
outputimages[:,:,1] = filters.sobel_h(inputimg)
outputimages[:,:,2] = filters.sobel_v(filters.gaussian(inputimg,sigma=0.5))
y = y_train[0]
node_in = Input(shape=sh, name='inputlayer')
# smaller initsigma does not work well.
node_acnn = Conv2DAdaptive(rank=2,nfilters=3,kernel_size=(5,5),
data_format='channels_last',
strides=1,
padding='same',name='acnn',activation='linear',
init_sigma=0.5, trainSigmas=True,
trainWeights=True,norm=2)(node_in)
#node_acnn = Conv2D(filters=3,kernel_size=(7,7),
# data_format='channels_last',
# padding='same',name='acnn',activation='linear')(node_in)
model = Model(inputs=node_in, outputs=[node_acnn])
# model.summary()
from lr_multiplier import LearningRateMultiplier
from keras.optimizers import SGD, Adadelta
lr_dict = {'all':0.1,'acnn/Sigma:0': 0.1,'acnn/Weights:0': 0.1,
'acnn-2/Sigma:0': 0.0001,'acnn-2/Weights:0': 0.01}
mom_dict = {'all':0.9,'acnn/Sigma:0': 0.9,'acnn/Weights:0': 0.9,
'acnn-2/Sigma:0': 0.9,'acnn-2/Weights:0': 0.9}
clip_dict = {'acnn/Sigma:0': [0.1, 2.0]}
# WORKS WITH OWN INIT With glorot uniform
#print("WHAT THE ", lr_dict)
opt = SGDwithLR(lr=lr_dict, momentum = mom_dict, decay=decay_dict,
clips=clip_dict, decay_epochs=decay_epochs, clipvalue=0.01)
#(lr_dict, mom_dict)
#
model.compile(loss=mse, optimizer=opt, metrics=None)
model.summary()
inputimg2 = np.expand_dims(np.expand_dims(inputimg,axis=0), axis=3)
outputimages2 = np.expand_dims(outputimages,axis=0)
#print info about weights
acnn_layer = model.get_layer('acnn')
all_params=acnn_layer.weights
print("All params:",all_params)
acnn_params = acnn_layer.get_weights()
for i,v in enumerate(all_params):
print(v, ", max, mean", np.max(acnn_params[i]),np.mean(acnn_params[i]),"\n")
mchkpt = keras.callbacks.ModelCheckpoint('models/weights.txt', monitor='val_loss', verbose=0, save_best_only=False, save_weights_only=False, mode='auto', period=1)
wh0= WeightHistory(model, "acnn")
sigma_history = []
sigma_call = lambda x, batch=1, logs={}: x.append(acnn_layer.get_weights()[0])
cov_dump = keras.callbacks.LambdaCallback(on_epoch_end=sigma_call(sigma_history))
rv = RecordVariable("acnn","acnn/Sigma:0")
history = model.fit(inputimg2, outputimages2,
batch_size=1,
epochs=1000,
verbose=1, callbacks=[wh0,cov_dump,rv])
print ("RECORD", len(rv.record), rv.record[0].shape)
import matplotlib.pyplot as plt
rv_arr = np.array(rv.record)
plt.plot(rv_arr)
plt.title("Sigma")
plt.figure()
plt.plot(history.history['loss'])
plt.title("Loss")
#print info about weights
print("After training:",all_params)
acnn_params = acnn_layer.get_weights()
for i,v in enumerate(all_params):
print(v, ", max, mean", np.max(acnn_params[i]),np.mean(acnn_params[i]),"\n")
# print info about sigmas
#print("Recorded sigma history", sigma_history)
#print("Recorded weight history", wh0.get_epochlist())
pred_images = model.predict(inputimg2, verbose=1)
print("Prediction shape",pred_images.shape)
plt = True
if plt:
print("Plotting kernels before...")
import matplotlib.pyplot as plt
num_images=min(pred_images.shape[3],12)
fig=plt.figure(figsize=(10,5))
plt.subplot(3, num_images, 2)
plt.imshow(np.squeeze(inputimg2[0,:,:,0]))
for i in range(num_images):
plt.subplot(3, num_images, i+4)
plt.imshow(np.squeeze(outputimages2[0,:,:,i]))
plt.title("output image")
print("Max-in:",i," ",np.max(np.squeeze(outputimages2[0,:,:,i])))
for i in range(num_images):
plt.subplot(3, num_images, i+7)
plt.imshow(np.squeeze(pred_images[0,:,:,i]))
plt.title("pred image")
print("MAx:","pred",i,np.max(np.squeeze(pred_images[0,:,:,i])))
plt.show()
plt.figure()
for i in range(num_images):
plt.subplot(3, num_images, i+1)
#print(acnn_params[1].shape)
plt.imshow(np.squeeze(acnn_params[1][:,:,0,i]))
#print("MAx:","pred",i,np.max(np.squeeze(acnn_params[i])))
#fig.colorbar(im, ax=ax1)
plt.show()
plt.figure()
for i in range(num_images):
plt.subplot(3, num_images, i+1)
print("U -shape: ", acnn_layer.U().shape,type(K.eval(acnn_layer.U()[:,:,0,i])))
print("Prod-shape", (acnn_params[1][:,:,0,i]*acnn_layer.U()[:,:,0,i]).shape)
plt.imshow(np.float32(K.eval(acnn_layer.U()[:,:,0,i])))
plt.title("U func")
plt.figure()
for i in range(num_images):
plt.subplot(3, num_images, i+1)
print("U -shape: ", acnn_layer.U().shape,type(K.eval(acnn_layer.U()[:,:,0,i])))
print("Prod-shape", (acnn_params[1][:,:,0,i]*acnn_layer.U()[:,:,0,i]).shape)
plt.imshow(np.float32(acnn_params[1][:,:,0,i]*K.eval(acnn_layer.U()[:,:,0,i])))
plt.title("Weights")
#plt.imshow()
#print("MAx:","pred",i,np.max(np.squeeze(acnn_params[i])))
#fig.colorbar(im, ax=ax1)
plt.show()
#print( model.get_layer('acnn').output )
print( "Final Sigmas", model.get_layer('acnn').get_weights()[0] )
K.clear_session()
def test_transfer(dset='mnist', random_seed=9, epochs=10,
data_augmentation=False,
batch_size = 512,ntrn=None,ntst=None,mod='focusing'):
import os
import numpy as np
#os.environ['CUDA_VISIBLE_DEVICES']="0"
#os.environ['TF_FORCE_GPU_ALLOW_GROWTH']="true"
import keras
from keras.losses import mse
from keras.optimizers import SGD, RMSprop
from keras.datasets import mnist,fashion_mnist, cifar10
from keras.models import Sequential, Model
from keras.layers import Input, Dense, Dropout, Flatten,Conv2D, BatchNormalization
from keras.layers import Activation, Permute,Concatenate,GlobalAveragePooling2D
from skimage import filters
from keras import backend as K
from keras_utils import WeightHistory as WeightHistory
from keras_utils import RecordVariable, \
PrintLayerVariableStats, PrintAnyVariable, \
SGDwithLR, eval_Kdict, standarize_image_025
from keras_preprocessing.image import ImageDataGenerator
from Kfocusing import FocusedLayer1D
from keras.engine.topology import Layer
from keras import activations, regularizers, constraints
from keras import initializers
from keras.engine import InputSpec
import tensorflow as tf
from keras.applications.inception_v3 import InceptionV3
#import keras.applications.resnet50 as resnet
#from keras.applications.resnet50 import preprocess_input
from keras.applications import VGG16
from keras.applications.vgg16 import preprocess_input
#Load the VGG model
config = tf.ConfigProto()
config.gpu_options.per_process_gpu_memory_fraction = 0.3
# Create a session with the above options specified.
K.tensorflow_backend.set_session(tf.Session(config=config))
K.clear_session()
sid = random_seed
#test_acnn = True
np.random.seed(sid)
tf.random.set_random_seed(sid)
tf.compat.v1.random.set_random_seed(sid)
from datetime import datetime
now = datetime.now()
if dset=='mnist':
# input image dimensions
img_rows, img_cols = 28, 28
# the data, split between train and test sets
(x_train, y_train), (x_test, y_test) = mnist.load_data()
NTRN = ntrn if ntrn else x_train.shape[0]
NTST = ntst if ntst else x_test.shape[0]
n_channels=1
lr_dict = {'all':0.1,
'focus-1/Sigma:0': 0.01,'focus-1/Mu:0': 0.01,'focus-1/Weights:0': 0.1,
'focus-2/Sigma:0': 0.01,'focus-2/Mu:0': 0.01,'focus-2/Weights:0': 0.1}
mom_dict = {'all':0.9,'focus-1/Sigma:0': 0.9,'focus-1/Mu:0': 0.9,
'focus-2/Sigma:0': 0.9,'focus-2/Mu:0': 0.9}
decay_dict = {'all':0.9, 'focus-1/Sigma:0': 0.1,'focus-1/Mu:0':0.1,
'focus-2/Sigma:0': 0.1,'focus-2/Mu:0': 0.1}
clip_dict = {'focus-1/Sigma:0':(0.01,1.0),'focus-1/Mu:0':(0.0,1.0),
'focus-2/Sigma:0':(0.01,1.0),'focus-2/Mu:0':(0.0,1.0)}
e_i = x_train.shape[0] // batch_size
decay_epochs =np.array([e_i*100], dtype='int64')
elif dset=='cifar10':
img_rows, img_cols = 32,32
n_channels=3
(x_train, y_train), (x_test, y_test) = cifar10.load_data()
NTRN = ntrn if ntrn else x_train.shape[0]
NTST = ntst if ntst else x_test.shape[0]
lr_dict = {'all':1e-3,
'focus-1/Sigma:0': 1e-3,'focus-1/Mu:0': 1e-3,'focus-1/Weights:0':1e-3,
'focus-2/Sigma:0': 1e-3,'focus-2/Mu:0': 1e-3,'focus-2/Weights:0': 1e-3,
'dense_1/Weights:0':1e-3}
# 1e-3 'all' reaches 91.43 at 250 epochs
# 1e-3 'all' reached 90.75 at 100 epochs
mom_dict = {'all':0.9,'focus-1/Sigma:0': 0.9,'focus-1/Mu:0': 0.9,
'focus-2/Sigma:0': 0.9,'focus-2/Mu:0': 0.9}
#decay_dict = {'all':0.9}
decay_dict = {'all':0.9, 'focus-1/Sigma:0': 0.9,'focus-1/Mu:0':0.9,
'focus-2/Sigma:0': 0.9,'focus-2/Mu:0': 0.9}
clip_dict = {'focus-1/Sigma:0':(0.01,1.0),'focus-1/Mu:0':(0.0,1.0),
'focus-2/Sigma:0':(0.01,1.0),'focus-2/Mu:0':(0.0,1.0)}
e_i = NTRN // batch_size
#decay_epochs =np.array([e_i*10], dtype='int64') #for 20 epochs
#decay_epochs =np.array([e_i*10,e_i*80,e_i*120,e_i*160], dtype='int64')
decay_epochs =np.array([e_i*10, e_i*80, e_i*120, e_i*180], dtype='int64')
num_classes = np.unique(y_train).shape[0]
if K.image_data_format() == 'channels_first':
x_train = x_train.reshape(x_train.shape[0], n_channels, img_rows, img_cols)
x_test = x_test.reshape(x_test.shape[0], n_channels, img_rows, img_cols)
input_shape = (n_channels, img_rows, img_cols)
else:
x_train = x_train.reshape(x_train.shape[0], img_rows, img_cols, n_channels)
x_test = x_test.reshape(x_test.shape[0], img_rows, img_cols, n_channels)
input_shape = (img_rows, img_cols, n_channels)
x_train = x_train.reshape(x_train.shape[0], img_rows, img_cols, n_channels)
x_test = x_test.reshape(x_test.shape[0], img_rows, img_cols, n_channels)
input_shape = (img_rows, img_cols, n_channels)
print('x_train shape:', x_train.shape)
print(x_train.shape[0], 'train samples')
print(x_test.shape[0], 'test samples')
#FRAME_SIZE=(299,299,3)
FRAME_SIZE = (224,224,3)
idx = np.random.permutation(x_train.shape[0])
x_train = x_train[idx[0:NTRN]]
y_train = y_train[idx[0:NTRN]]
idx = np.random.permutation(x_test.shape[0])
x_test = x_test[idx[0:NTST]]
y_test = y_test[idx[0:NTST]]
# convert class vectors to binary class matrices
y_train = keras.utils.to_categorical(y_train, num_classes)
y_test = keras.utils.to_categorical(y_test, num_classes)
x_train = x_train.astype('float32')
x_test = x_test.astype('float32')
#x_train, _, x_test = paddataset(x_train,None,x_test,FRAME_SIZE,False,5)
#x_train, _, x_test = standarize_image_025(x_train,tst=x_test)
x_train=preprocess_input(x_train)
x_test=preprocess_input(x_test)
import matplotlib.pyplot as plt
plt.imshow(x_train[0])
print(np.max(x_train[0]),np.mean(x_train[0]))
plt.show()
plt.imshow(x_test[0])
print(np.max(x_train[0]),np.mean(x_train[0]))
plt.show()
print(x_train.shape, 'train samples')
print(np.mean(x_train))
print(np.var(x_train))
print(x_test.shape, 'test samples')
print(np.mean(x_test))
print(np.var(x_test))
# create the base pre-trained model
base_in = Input(shape=input_shape, name='inputlayer')
base_model = VGG16(weights='imagenet', include_top=False, input_shape=input_shape,
input_tensor=base_in)
x=base_model.output
x = GlobalAveragePooling2D()(x)
pad_input =True
if pad_input:
print("PADDING LAYER OUPUT")
paddings = tf.constant([[0, 0,], [3, 3]])
padding_layer = keras.layers.Lambda(lambda x: tf.pad(x,paddings,"CONSTANT"))
x = padding_layer(x)
#x = Dropout(0.1)(x)
# let's add a fully-connected layer
focusing=mod=='focused'
if focusing:
nf = 40#init_sigma=np.exp(-(np.linspace(0.1, 0.9, nf)-0.5)**2/0.07),
x = FocusedLayer1D(units=nf,
name='focus-1',
activation='linear',
init_sigma=0.08,
init_mu='spread',
init_w= None,
train_sigma=True,
train_weights=True,
train_mu = True,
si_regularizer=None,
normed=2)(x)
elif mod=='dense':
x = Dense(40, activation='linear')(x)
else:
print('unknown mod')
return
x = BatchNormalization()(x)
x = Activation('relu')(x)
x = Dropout(0.2)(x)
# and a logistic layer -- let's say we have 200 classes
predictions = Dense(10, activation='softmax')(x)
model = Model(inputs=base_in, outputs=[predictions])
# opt= SGDwithLR(lr_dict, mom_dict,decay_dict,clip_dict, decay_epochs)#, decay=None)
optimizer_s = 'SGDwithLR'
if optimizer_s == 'SGDwithLR':
opt = SGDwithLR(lr_dict, mom_dict,decay_dict,clip_dict, decay_epochs)#, decay=None)
elif optimizer_s=='RMSprob':
opt = RMSprop(lr=0.01, rho=0.9, epsilon=None, decay=0.0)
else:
# opt= SGDwithLR({'all': 0.01},{'all':0.9})#, decay=None)
opt= SGD(lr=0.01, momentum=0.9)#, decay=None)
# compile the model (should be done *after* setting layers to non-trainable)
model.compile(loss=keras.losses.categorical_crossentropy,
optimizer=opt,
metrics=['accuracy'])
model.summary()
stat_func_name = ['max: ', 'mean: ', 'min: ', 'var: ', 'std: ']
stat_func_list = [np.max, np.mean, np.min, np.var, np.std]
callbacks = []
if focusing:
pr_1 = PrintLayerVariableStats("focus-1","Weights:0",stat_func_list,stat_func_name)
pr_2 = PrintLayerVariableStats("focus-1","Sigma:0",stat_func_list,stat_func_name)
pr_3 = PrintLayerVariableStats("focus-1","Mu:0",stat_func_list,stat_func_name)
callbacks+=[pr_1,pr_2,pr_3]
recordvariables=False
if recordvariables:
rv_weights_1 = RecordVariable("focus-1","Weights:0")
rv_sigma_1 = RecordVariable("focus-1","Sigma:0")
callbacks+=[rv_weights_1,rv_sigma_1]
if optimizer_s =='SGDwithLR':
print_lr_rates_callback = keras.callbacks.LambdaCallback(
on_epoch_end=lambda epoch, logs: print("iter: ",
K.eval(model.optimizer.iterations),
" LR RATES :",
eval_Kdict(model.optimizer.lr)))
callbacks.append(print_lr_rates_callback)
if not data_augmentation:
print('Not using data augmentation.')
history=model.fit(x_train, y_train,
batch_size=batch_size,
epochs=epochs,
validation_data=(x_test, y_test),
shuffle=True,
callbacks=callbacks)
else:
print('Using real-time data augmentation.')
# This will do preprocessing and realtime data augmentation:
datagen = ImageDataGenerator(
# set input mean to 0 over the dataset
featurewise_center=False,
# set each sample mean to 0
samplewise_center=False,
# divide inputs by std of dataset
featurewise_std_normalization=False,
# divide each input by its std
samplewise_std_normalization=False,
# apply ZCA whitening
zca_whitening=False,
# epsilon for ZCA whitening
zca_epsilon=1e-06,
# randomly rotate images in the range (deg 0 to 180)
rotation_range=0,
# randomly shift images horizontally
width_shift_range=0.2,
# randomly shift images vertically
height_shift_range=0.2,
# set range for random shear
shear_range=0.1,
# set range for random zoom
zoom_range=0.1,
# set range for random channel shifts
channel_shift_range=0.,
# set mode for filling points outside the input boundaries
fill_mode='nearest',
# value used for fill_mode = "constant"
cval=0.,
# randomly flip images
horizontal_flip=True,
# randomly flip images
vertical_flip=False,
# set rescaling factor (applied before any other transformation)
rescale=None,
# set function that will be applied on each input
preprocessing_function=None,
# image data format, either "channels_first" or "channels_last"
data_format='channels_last',
# fraction of images reserved for validation (strictly between 0 and 1)
validation_split=0.0)
# Compute quantities required for featurewise normalization
# (std, mean, and principal components if ZCA whitening is applied).
datagen.fit(x_train)
#x_test,_,_ = paddataset(x_test,None, None,frame_size=FRAME_SIZE, random_pos=False)
# Fit the model on the batches generated by datagen.flow().
history=model.fit_generator(datagen.flow(x_train, y_train, batch_size=batch_size),
validation_data=(x_test, y_test),
workers=4, use_multiprocessing=False,epochs=epochs, verbose=2,
callbacks=callbacks,
steps_per_epoch=x_train.shape[0]//batch_size)
score = model.evaluate(x_test, y_test, verbose=0)
print('Test loss:', score[0])
print('Test accuracy:', score[1])
return score,history,model