def train(aug,trainX,trainY,testX,testY,args):
# initialize the model
print("[INFO] compiling model...")
model = LeNet.build(width=norm_size, height=norm_size, depth=3, classes=CLASS_NUM)
opt = Adam(lr=INIT_LR, decay=INIT_LR / EPOCHS)
model.compile(loss="categorical_crossentropy", optimizer=opt,
metrics=["accuracy"])
# train the network
print("[INFO] training network...")
H = model.fit_generator(aug.flow(trainX, trainY, batch_size=BS),
validation_data=(testX, testY), steps_per_epoch=len(trainX) // BS,
epochs=EPOCHS, verbose=1)
# save the model to disk
print("[INFO] serializing network...")
model.save(args["model"])
# plot the training loss and accuracy
plt.style.use("ggplot")
plt.figure()
N = EPOCHS
plt.plot(np.arange(0, N), H.history["loss"], label="train_loss")
plt.plot(np.arange(0, N), H.history["val_loss"], label="val_loss")
plt.plot(np.arange(0, N), H.history["acc"], label="train_acc")
plt.plot(np.arange(0, N), H.history["val_acc"], label="val_acc")
plt.title("Training Loss and Accuracy on Invoice classifier")
plt.xlabel("Epoch #")
plt.ylabel("Loss/Accuracy")
plt.legend(loc="lower left")
plt.savefig(args["plot"])
def modelChoice(args):
print("creating model..." + args.model)
if args.model == 'googleNet':
model = googleNet.build(width=args.width,
height=args.height,
depth=3,
classes=CLASS_NUM)
return model
elif args.model == 'AlexNet':
model = AlexNet.build(width=args.width,
height=args.height,
depth=3,
classes=CLASS_NUM)
return model
elif args.model == 'VGG16':
model = VGG16.build(width=args.width,
height=args.height,
depth=3,
classes=CLASS_NUM)
return model
else:
model = LeNet.build(width=args.width,
height=args.height,
depth=3,
classes=CLASS_NUM)
return model
def train(aug,trainX,trainY,testX,testY,args):
# initialize the model
print("[INFO] compiling model...")
model = LeNet.build(width=norm_size, height=norm_size, depth=3, classes=CLASS_NUM)
opt = Adam(lr=INIT_LR, decay=INIT_LR / EPOCHS)
model.compile(loss="categorical_crossentropy", optimizer=opt,
metrics=["accuracy"])
# train the network
print("[INFO] training network...")
H = model.fit_generator(aug.flow(trainX, trainY, batch_size=BS),
validation_data=(testX, testY), steps_per_epoch=len(trainX) // BS,
epochs=EPOCHS, verbose=1)
# save the model to disk
print("[INFO] serializing network...")
model.save(args["model"])
# plot the training loss and accuracy
plt.style.use("ggplot")
plt.figure()
N = EPOCHS
plt.plot(np.arange(0, N), H.history["loss"], label="train_loss")
plt.plot(np.arange(0, N), H.history["val_loss"], label="val_loss")
plt.plot(np.arange(0, N), H.history["acc"], label="train_acc")
plt.plot(np.arange(0, N), H.history["val_acc"], label="val_acc")
plt.title("Training Loss and Accuracy on traffic-sign classifier")
plt.xlabel("Epoch #")
plt.ylabel("Loss/Accuracy")
plt.legend(loc="lower left")
plt.savefig(args["plot"])
# USAGE # python visualize_architecture.py # import the necessary packages from net.lenet import LeNet from keras.utils import plot_model # initialize LeNet and then write the network architecture # visualization grpah to disk model = LeNet.build(28, 28, 1, 10) plot_model(model, to_file="lenet.png", show_shapes=True)
model_zoo = [
'lenet', 'alexnet', 'vgg11', 'vgg16', 'vgg_imageNet', 'googlenetv1',
'resnet', 'densenet'
]
model_to_train = ['densenet']
for op in op_to_run:
if op_to_run == optimizer_zoo[0]:
optimizer = Adam(lr=INIT_LR, decay=INIT_LR / EPOCHS)
else:
optimizer = SGD(lr=INIT_LR)
for model_name in model_to_train:
if model_name == model_zoo[0]: # LeNet
model = LeNet.build(input_shape, CLASS_NUM)
elif model_name == model_zoo[1]: # AlexNet
model = AlexNet.build(input_shape,
CLASS_NUM,
dense_layers=2,
hidden_units=512,
dropout_rate=0.5,
subsample_initial_block=False)
elif model_name == model_zoo[2]: # VGG11
model = Vgg11.build(input_shape,
CLASS_NUM,
dense_layers=2,
hidden_units=512,
dropout_rate=0.5,
sc_ratio=4)
elif model_name == model_zoo[3]: # VGG16
input_shape = (img_rows, img_cols, 1)
chanDim = -1
x_train = x_train.astype('float32')
x_test = x_test.astype('float32')
x_train /= 255
x_test /= 255
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)
model = LeNet.build(chanDim, input_shape, num_classes)
#model.compile(loss='mse', optimizer=SGD(lr=0.1), metrics=['accuracy'])
#model.compile(loss='categorical_crossentropy', optimizer=SGD(lr=0.1), metrics=['accuracy'])
model.compile(loss='categorical_crossentropy',
optimizer='adam',
metrics=['accuracy'])
#start train-----------------------------------
#model.fit(x_train, y_train, batch_size=1000, epochs=20)
model.fit(x_train,
y_train,
batch_size=batch_size,
epochs=epochs,
verbose=1,
validation_data=(x_test, y_test))
# partition the data into training and testing splits using 75% of
# the data for training and the remaining 25% for testing
(trainX, testX, trainY, testY) = train_test_split(data,
labels,
test_size=0.25,
random_state=42)
# convert the labels from integers to vectors
lb = LabelBinarizer().fit(trainY)
trainY = lb.transform(trainY)
testY = lb.transform(testY)
# initialize the model
print("[INFO] compiling model...")
model = LeNet.build(width=28, height=28, depth=1, classes=9)
opt = SGD(lr=0.01)
model.compile(loss="categorical_crossentropy",
optimizer=opt,
metrics=["accuracy"])
# train the network
print("[INFO] training network...")
H = model.fit(trainX,
trainY,
validation_data=(testX, testY),
batch_size=32,
epochs=15,
verbose=1)
# evaluate the network