def test_append_conv2d_layer():
model = CNN()
model.add_input_layer(shape=(256, 256, 3), name="input0")
model.append_conv2d_layer(10, (3, 3), activation='relu')
input = np.zeros((20, 256, 256, 3))
out = model.predict(input)
assert (out.shape == (20, 256, 256, 10))
def test_remove_last_layer():
from tensorflow.keras.datasets import cifar10
batch_size = 32
num_classes = 10
epochs = 100
data_augmentation = True
num_predictions = 20
save_dir = os.path.join(os.getcwd(), 'saved_models')
model_name = 'keras_cifar10_trained_model.h5'
(X_train, y_train), (X_test, y_test) = cifar10.load_data()
number_of_train_samples_to_use = 100
X_train = X_train[0:number_of_train_samples_to_use, :]
y_train = y_train[0:number_of_train_samples_to_use]
my_cnn=CNN()
my_cnn.add_input_layer(shape=(32,32,3),name="input")
my_cnn.append_conv2d_layer(num_of_filters=16, kernel_size=(3,3),padding="same", activation='linear', name="conv1")
my_cnn.append_maxpooling2d_layer(pool_size=2, padding="same", strides=2,name="pool1")
my_cnn.append_conv2d_layer(num_of_filters=8, kernel_size=3, activation='relu', name="conv2")
my_cnn.append_flatten_layer(name="flat1")
my_cnn.append_dense_layer(num_nodes=10,activation="relu",name="dense1")
my_cnn.append_dense_layer(num_nodes=2,activation="relu",name="dense2")
out=my_cnn.predict(X_train)
assert out.shape == (number_of_train_samples_to_use, 2)
my_cnn.remove_last_layer()
out = my_cnn.predict(X_train)
assert out.shape==(number_of_train_samples_to_use,10)
def test_train():
from tensorflow.keras.datasets import mnist
import tensorflow.keras as keras
bsize_entity = 128
no_of_cls = 10
epochs = 1
img_row, img_col = 28, 28
(x_train, y_train), (x_test, y_test) = mnist.load_data()
x_train = x_train.reshape(60000, 28, 28, 1)
x_test = x_test.reshape(10000, 28, 28, 1)
y_train = keras.utils.to_categorical(y_train, no_of_cls)
y_test = keras.utils.to_categorical(y_test, no_of_cls)
model = CNN()
model.add_input_layer(shape=(28, 28, 1), name="Input")
model.append_conv2d_layer(32, kernel_size=(3, 3))
model.append_conv2d_layer(64, kernel_size=(3, 3))
model.append_maxpooling2d_layer(pool_size=(2, 2))
model.append_flatten_layer()
model.append_dense_layer(128, activation="relu")
model.append_dense_layer(no_of_cls, activation="softmax")
model.set_loss_function("categorical_crossentropy")
model.set_metric("accuracy")
model.set_optimizer("Adagrad")
model.train(x_train, y_train, batch_size=bsize_entity, num_epochs=epochs)
mk = model.evaluate(x_test, y_test)
correct = np.array([0.06997422293154523, 0.9907])
np.testing.assert_almost_equal(correct[0], mk[0], decimal=2)
np.testing.assert_almost_equal(correct[1], mk[1], decimal=2)
def test_evaluate():
cnn = CNN()
batch_size = 10
num_epochs = 10
(X_train, y_train), (X_test, y_test) = cifar10.load_data()
samples = 100
X_train = X_train[0:samples, :]
X_train = X_train.astype('float32') / 255
test_samples = 10
X_test = X_test[0:test_samples, :]
X_test = X_test.astype('float32') / 255
from tensorflow.keras.utils import to_categorical
y_train = to_categorical(y_train, 10)
y_train = y_train[0:samples, :]
y_test = to_categorical(y_test, 10)
y_test = y_test[0:test_samples, :]
cnn.add_input_layer(shape=(32, 32, 3))
cnn.append_conv2d_layer(num_of_filters=64, kernel_size=(3, 3), activation='relu', name="conv1")
cnn.append_conv2d_layer(num_of_filters=32, kernel_size=(3, 3), activation='relu', name="conv2")
cnn.append_flatten_layer(name="flat1")
cnn.append_dense_layer(num_nodes=10, activation="relu", name="dense1")
cnn.set_optimizer(optimizer="SGD")
cnn.set_loss_function(loss="hinge")
cnn.set_metric(metric='accuracy')
ListofLoss = cnn.train(X_train=X_train, y_train=y_train, batch_size=None, num_epochs=num_epochs)
(loss, metric) = cnn.evaluate(X=X_test, y=y_test)
assert loss < 5
assert metric < 2
def test_train_and_evaluate():
from tensorflow.keras.datasets import cifar10
batch_size = 32
num_classes = 10
epochs = 1
save_dir = os.path.join(os.getcwd(), 'saved_models')
model_name = 'keras_cifar10_trained_model.h5'
(train_images, train_labels), (test_images,
test_labels) = cifar10.load_data()
train_labels = keras.utils.to_categorical(train_labels, num_classes)
test_labels = keras.utils.to_categorical(test_labels, num_classes)
my_cnn = CNN()
my_cnn.append_conv2d_layer(num_of_filters=32,
kernel_size=(3, 3),
padding="same",
activation='relu',
name="conv1",
input_shape=train_images.shape[1:])
# my_cnn.append_conv2d_layer(num_of_filters=32, kernel_size=(3,3),padding="same", activation='relu', name="conv2")
my_cnn.append_maxpooling2d_layer(pool_size=2,
padding="same",
strides=2,
name="pool1")
# my_cnn.append_conv2d_layer(num_of_filters=64, kernel_size=(3,3),padding="same", activation='relu', name="conv3")
my_cnn.append_conv2d_layer(num_of_filters=64,
kernel_size=(3, 3),
padding="same",
activation='relu',
name="conv4")
my_cnn.append_maxpooling2d_layer(pool_size=2,
padding="same",
strides=2,
name="pool2")
my_cnn.append_flatten_layer(name="flat1")
# my_cnn.append_dense_layer(num_nodes=512,activation="relu",name="dense1")
my_cnn.append_dense_layer(num_nodes=10,
activation="softmax",
name="dense2")
my_cnn.set_metric('accuracy')
my_cnn.set_optimizer('RMSprop')
my_cnn.set_loss_function('categorical_crossentropy')
loss = my_cnn.train(train_images, train_labels, batch_size, epochs)
path = os.getcwd()
file_path = os.path.join(path, model_name)
my_cnn.save_model(model_file_name=file_path)
print("loss :{0}".format(loss))
assert len(loss) == 1
test_loss, test_acc = my_cnn.evaluate(test_images, test_labels)
assert test_loss < 5
assert test_acc < 1
def test_evaluate():
from tensorflow.keras.datasets import cifar10
(X_train, y_train), (X_test, y_test) = cifar10.load_data()
X_train = X_train[:100, :]
y_train = y_train[:100]
X_test=X_test[:100,:]
y_test = y_test[:100]
# np.random.seed(100)
initilizer = tensorflow.keras.initializers.Zeros()
# initilizer = tensorflow.keras.initializers.RandomUniform(minval=-0.05, maxval=0.05, seed=20)
model_testing = CNN()
model = Sequential()
model.add(Conv2D(filters=64, kernel_size=3, strides=1, padding='same', activation='relu', trainable=True,
input_shape=(32, 32, 3), kernel_initializer=initilizer, bias_initializer=initilizer))
model.add(Conv2D(filters=70, kernel_size=3, strides=1, padding='same', activation='relu', trainable=True,
kernel_initializer=initilizer, bias_initializer=initilizer))
model.add(Conv2D(filters=75, kernel_size=3, strides=1, padding='same', activation='relu', trainable=True,
kernel_initializer=initilizer, bias_initializer=initilizer))
model.add(Conv2D(filters=90, kernel_size=3, strides=1, padding='same', activation='relu', trainable=True,
kernel_initializer=initilizer, bias_initializer=initilizer))
model.add(MaxPool2D(pool_size=2, padding='same', strides=1))
model.add(Flatten())
model.add(
Dense(units=256, activation='relu', trainable=True, kernel_initializer=initilizer, bias_initializer=initilizer))
model.add(
Dense(units=256, activation='relu', trainable=True, kernel_initializer=initilizer, bias_initializer=initilizer))
model.add(Dense(units=256, activation='sigmoid', trainable=True, kernel_initializer=initilizer,
bias_initializer=initilizer))
model.compile(optimizer='Adagrad', loss='hinge', metrics=['mse'])
history = model.fit(x=X_train, y=y_train, batch_size=32, epochs=5, shuffle=False)
model_testing.add_input_layer(shape=(32, 32, 3), name="")
model_testing.append_conv2d_layer(num_of_filters=64, kernel_size=3, padding='same', strides=1, activation='relu',
name="1")
model_testing.append_conv2d_layer(num_of_filters=70, kernel_size=3, padding='same', strides=1, activation='relu',
name="2")
model_testing.append_conv2d_layer(num_of_filters=75, kernel_size=3, padding='same', strides=1, activation='relu',
name="3")
model_testing.append_conv2d_layer(num_of_filters=90, kernel_size=3, padding='same', strides=1, activation='relu',
name="4")
model_testing.append_maxpooling2d_layer(pool_size=2, padding='same', strides=1, name="5")
model_testing.append_flatten_layer(name='6')
model_testing.append_dense_layer(num_nodes=256, activation='relu', name='7')
model_testing.append_dense_layer(num_nodes=256, activation='relu', name='8')
model_testing.append_dense_layer(num_nodes=256, activation='sigmoid', name='9')
model_testing.set_optimizer(optimizer='adagrad')
model_testing.set_loss_function(loss='hinge')
model_testing.set_metric(metric='mse')
loss = model_testing.train(X_train=X_train, y_train=y_train, batch_size=32, num_epochs=5)
model_evaluate = model.evaluate(X_test,y_test)
model_testing_evaluate = model_testing.evaluate(X_test,y_test)
#assert model_testing_evaluate == model_evaluate
assert np.allclose(model_testing_evaluate,model_evaluate,rtol=1e-2,atol=1e-2)
def test_evaluate():
from tensorflow.keras.datasets import mnist
import tensorflow.keras as keras
batch_size = 128
num_classes = 10
epochs = 3
# 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()
x_train = x_train.reshape(60000, 28, 28, 1)
x_test = x_test.reshape(10000, 28, 28, 1)
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 = CNN()
model.add_input_layer(shape=(28, 28, 1), name="Input")
model.append_conv2d_layer(32, kernel_size=(3, 3))
model.append_conv2d_layer(64, kernel_size=(3, 3))
model.append_maxpooling2d_layer(pool_size=(2, 2))
model.append_flatten_layer()
model.append_dense_layer(128, activation="relu")
model.append_dense_layer(num_classes, activation="softmax")
model.set_loss_function("categorical_crossentropy")
model.set_metric("accuracy")
model.set_optimizer("Adagrad")
model.train(x_train, y_train, batch_size=batch_size, num_epochs=epochs)
score = model.evaluate(x_test, y_test)
actual = np.array([0.05093684684933396, 0.9907])
# loss
np.testing.assert_almost_equal(actual[0], score[0], decimal=2)
# accuracy
np.testing.assert_almost_equal(actual[1], score[1], decimal=2)
def test_set_weights_without_biases():
my_cnn = CNN()
image_size = (np.random.randint(32, 100), np.random.randint(20, 100),
np.random.randint(3, 10))
number_of_conv_layers = np.random.randint(2, 10)
my_cnn.add_input_layer(shape=image_size, name="input")
previous_depth = image_size[2]
for k in range(number_of_conv_layers):
number_of_filters = np.random.randint(3, 100)
kernel_size = np.random.randint(3, 9)
my_cnn.append_conv2d_layer(num_of_filters=number_of_filters,
kernel_size=(kernel_size, kernel_size),
padding="same",
activation='linear')
w = my_cnn.get_weights_without_biases(layer_number=k + 1)
w_set = np.full_like(w, 0.2)
my_cnn.set_weights_without_biases(w_set, layer_number=k + 1)
w_get = my_cnn.get_weights_without_biases(layer_number=k + 1)
print("here 1", w_get.shape)
print("here 2", w_set.shape)
assert w_get.shape == w_set.shape
previous_depth = number_of_filters
pool_size = np.random.randint(2, 5)
my_cnn.append_maxpooling2d_layer(pool_size=pool_size,
padding="same",
strides=2,
name="pool1")
my_cnn.append_flatten_layer(name="flat1")
my_cnn.append_dense_layer(num_nodes=10)
number_of_dense_layers = np.random.randint(2, 10)
previous_nodes = 10
for k in range(number_of_dense_layers):
number_of_nodes = np.random.randint(3, 100)
kernel_size = np.random.randint(3, 9)
my_cnn.append_dense_layer(num_nodes=number_of_nodes)
w = my_cnn.get_weights_without_biases(layer_number=k +
number_of_conv_layers + 4)
w_set = np.full_like(w, 0.8)
my_cnn.set_weights_without_biases(w_set,
layer_number=k +
number_of_conv_layers + 4)
w_get = my_cnn.get_weights_without_biases(layer_number=k +
number_of_conv_layers + 4)
assert w_get.shape == w_set.shape
previous_nodes = number_of_nodes
def test_get_weights_without_biases_2():
my_cnn = CNN()
image_size=(np.random.randint(32,100),np.random.randint(20,100),np.random.randint(3,10))
number_of_conv_layers=np.random.randint(2,10)
my_cnn.add_input_layer(shape=image_size,name="input")
previous_depth=image_size[2]
for k in range(number_of_conv_layers):
number_of_filters = np.random.randint(3, 100)
kernel_size= np.random.randint(3,9)
my_cnn.append_conv2d_layer(num_of_filters=number_of_filters,
kernel_size=(kernel_size,kernel_size),
padding="same", activation='linear')
actual = my_cnn.get_weights_without_biases(layer_number=k+1)
assert actual.shape == (kernel_size,kernel_size,previous_depth,number_of_filters)
previous_depth=number_of_filters
actual = my_cnn.get_weights_without_biases(layer_number=0)
assert actual is None
def test_get_weights_without_biases_3():
my_cnn = CNN()
image_size = (np.random.randint(32, 100), np.random.randint(20, 100),
np.random.randint(3, 10))
number_of_conv_layers = np.random.randint(2, 10)
my_cnn.add_input_layer(shape=image_size, name="input")
previous_depth = image_size[2]
for k in range(number_of_conv_layers):
number_of_filters = np.random.randint(3, 100)
kernel_size = np.random.randint(3, 9)
my_cnn.append_conv2d_layer(num_of_filters=number_of_filters,
kernel_size=(kernel_size, kernel_size),
padding="same",
activation='linear')
actual = my_cnn.get_weights_without_biases(layer_number=k + 1)
assert actual.shape == (kernel_size, kernel_size, previous_depth,
number_of_filters)
previous_depth = number_of_filters
actual = my_cnn.get_weights_without_biases(layer_number=0)
assert actual is None
pool_size = np.random.randint(2, 5)
my_cnn.append_maxpooling2d_layer(pool_size=pool_size,
padding="same",
strides=2,
name="pool1")
actual = my_cnn.get_weights_without_biases(layer_name="pool1")
assert actual is None
my_cnn.append_flatten_layer(name="flat1")
actual = my_cnn.get_weights_without_biases(layer_name="flat1")
assert actual is None
my_cnn.append_dense_layer(num_nodes=10)
number_of_dense_layers = np.random.randint(2, 10)
previous_nodes = 10
for k in range(number_of_dense_layers):
number_of_nodes = np.random.randint(3, 100)
kernel_size = np.random.randint(3, 9)
my_cnn.append_dense_layer(num_nodes=number_of_nodes)
actual = my_cnn.get_weights_without_biases(layer_number=k +
number_of_conv_layers + 4)
# assert actual.shape == (previous_nodes, number_of_nodes)
previous_nodes = number_of_nodes
def test_train():
cnn = CNN()
(X_train, y_train), (X_test, y_test) = cifar10.load_data()
samples = 100
X_train = X_train[0:samples, :]
X_train = X_train.astype('float32') / 255
test_samples = 20
X_test = X_test[0:test_samples, :]
X_test = X_test.astype('float32') / 255
from tensorflow.keras.utils import to_categorical
y_train = to_categorical(y_train, 10)
y_train = y_train[0:samples]
y_test = to_categorical(y_test, 10)
y_test = y_test[0:test_samples]
cnn.add_input_layer(shape=(32, 32, 3))
cnn.append_conv2d_layer(num_of_filters=64,
kernel_size=(3, 3),
activation='relu',
name="conv1")
cnn.append_conv2d_layer(num_of_filters=32,
kernel_size=(3, 3),
activation='relu',
name="conv2")
cnn.append_flatten_layer(name="flat1")
cnn.append_dense_layer(num_nodes=10, activation="softmax", name="dense1")
cnn.set_optimizer(optimizer="SGD")
cnn.set_loss_function(loss="categorical_crossentropy")
cnn.set_metric(metric=['accuracy'])
LossList = cnn.train(X_train=X_train,
y_train=y_train,
batch_size=10,
num_epochs=10)
assert LossList is not None
def test_evaluate():
(X_train, y_train), (X_test, y_test) = cifar10.load_data()
number_of_train_samples_to_use = 500
number_of_test_samples_to_use = 200
X_train = X_train[0:number_of_train_samples_to_use, :]
y_train = y_train[0:number_of_train_samples_to_use]
X_test = X_test[0:number_of_test_samples_to_use, :]
y_test = y_test[0:number_of_test_samples_to_use]
my_cnn = CNN()
my_cnn.add_input_layer(shape=(32, 32, 3), name="input")
my_cnn.append_conv2d_layer(num_of_filters=32,
kernel_size=(3, 3),
padding="same",
activation='relu',
name="conv1")
my_cnn.append_maxpooling2d_layer(pool_size=(2, 2), name="pool1")
my_cnn.append_conv2d_layer(num_of_filters=64,
kernel_size=3,
activation='relu',
name="conv2")
my_cnn.append_maxpooling2d_layer(pool_size=(2, 2), name="pool2")
my_cnn.append_conv2d_layer(num_of_filters=64,
kernel_size=3,
activation='relu',
name="conv3")
my_cnn.append_flatten_layer(name="flat1")
my_cnn.append_dense_layer(num_nodes=64, activation="relu", name="dense1")
my_cnn.append_dense_layer(num_nodes=10,
activation="softmax",
name="dense2")
np.random.seed(seed=1)
weigh = my_cnn.get_weights_without_biases(layer_name="conv1")
w_set = np.random.rand(*weigh.shape)
my_cnn.set_weights_without_biases(w_set, layer_name="conv1")
np.random.seed(seed=1)
weigh = my_cnn.get_weights_without_biases(layer_name="conv2")
w_set = np.random.rand(*weigh.shape)
my_cnn.set_weights_without_biases(w_set, layer_name="conv2")
np.random.seed(seed=1)
weigh = my_cnn.get_weights_without_biases(layer_name="conv3")
w_set = np.random.rand(*weigh.shape)
my_cnn.set_weights_without_biases(w_set, layer_name="conv3")
np.random.seed(seed=1)
weigh = my_cnn.get_weights_without_biases(layer_name="dense1")
w_set = np.random.rand(*weigh.shape)
my_cnn.set_weights_without_biases(w_set, layer_name="dense1")
np.random.seed(seed=1)
weigh = my_cnn.get_weights_without_biases(layer_name="dense2")
w_set = np.random.rand(*weigh.shape)
my_cnn.set_weights_without_biases(w_set, layer_name="dense2")
my_cnn.set_loss_function()
my_cnn.set_optimizer(optimizer="SGD", learning_rate=0.01, momentum=0.0)
my_cnn.set_metric(metric="accuracy")
# los = np.array([2.30277, 2.30264, 2.30242, 2.30225, 2.30207, 2.30190, 2.30171, 2.30154, 2.30138])
# los = np.around(los,decimals=2)
my_cnn.train(X_train, y_train, 60, 10)
acc = my_cnn.evaluate(X_test, y_test)
de = np.float32(0.07)
assert (acc == de)
def test_train_and_evaluate():
# Initializing and adding layers
print("*********** PLEASE WAIT FOR DATA TO LOAD ***********")
(train_images, train_labels), (test_images,
test_labels) = cifar10.load_data()
train_images, test_images = train_images / 255.0, test_images / 255.0
new_cnn = CNN()
new_cnn.add_input_layer(shape=(32, 32, 3), name="input")
new_cnn.append_conv2d_layer(32,
strides=3,
activation="relu",
name="conv2d_1")
new_cnn.append_maxpooling2d_layer(pool_size=2, name="maxpool_1")
new_cnn.append_conv2d_layer(64,
strides=3,
activation="relu",
name="conv2d_2")
new_cnn.append_maxpooling2d_layer(pool_size=2, name="maxpool_2")
new_cnn.append_conv2d_layer(64,
strides=3,
activation="relu",
name="conv2d_3")
new_cnn.append_flatten_layer(name="flatten")
new_cnn.append_dense_layer(64, activation="relu", name="dense_1")
new_cnn.append_dense_layer(10, activation="softmax", name="dense_2")
# Setting Compiler values
new_cnn.set_loss_function(loss="SparseCategoricalCrossentropy")
new_cnn.set_optimizer(optimizer="SGD")
new_cnn.set_metric('accuracy')
# Entering Num Epoch
batch_size = 1000
num_epoch = 10
history = new_cnn.train(train_images,
train_labels,
batch_size=batch_size,
num_epochs=num_epoch)
assert len(history) == len(train_images) / batch_size * num_epoch
evaluate = new_cnn.evaluate(train_images, train_labels)
assert evaluate[1] <= 1
assert evaluate[0] <= 3
def test_model_train():
my_cnn = CNN()
(x_train, y_train), (x_test, y_test) = cifar10.load_data()
y_train = keras.utils.to_categorical(y_train, 10)
y_test = keras.utils.to_categorical(y_test, 10)
#Comment if you want on entire dataset
x_train = x_train[0:600, :]
x_test = x_test[0:100]
y_train = y_train[0:600, :]
y_test = y_test[0:100]
x_train = x_train.astype('float32') / 255.0
x_test = x_test.astype('float32') / 255.0
#Tradition Model
model = Sequential()
model.add(
Conv2D(32, (3, 3),
padding='same',
activation='relu',
input_shape=(32, 32, 3)))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Conv2D(64, (3, 3), padding='same', activation='relu'))
model.add(Flatten())
model.add(Dense(512, activation='relu'))
model.add(Dense(10, activation='softmax'))
Optimizer = SGD(lr=0.01, momentum=0.0)
model.compile(optimizer=Optimizer,
loss='categorical_crossentropy',
metrics=['accuracy'])
Correct_Loss_History = model.fit(x_train,
y_train,
batch_size=32,
epochs=10,
validation_data=(x_test, y_test))
#My CNN Model
my_cnn.add_input_layer(shape=x_train.shape[1:], name="input")
my_cnn.append_conv2d_layer(num_of_filters=32,
kernel_size=3,
padding='same',
strides=1,
activation='relu')
my_cnn.append_maxpooling2d_layer(pool_size=(2, 2), name='pool1')
my_cnn.append_conv2d_layer(num_of_filters=64,
kernel_size=3,
padding='same',
strides=1,
activation='relu')
my_cnn.append_flatten_layer(name='flat')
my_cnn.append_dense_layer(num_nodes=512, activation='relu', trainable=True)
my_cnn.append_dense_layer(num_nodes=10,
activation='softmax',
trainable=True)
my_cnn.model.compile(loss='categorical_crossentropy',
optimizer=Optimizer,
metrics=['accuracy'])
my_cnn_Loss_History = my_cnn.model.fit(x_train,
y_train,
batch_size=32,
epochs=10)
print("\nCorrect_Loss_History.history['loss']: ",
Correct_Loss_History.history['loss'])
print("\nmy_cnn_Loss_History.history['loss']: ",
my_cnn_Loss_History.history['loss'])
assert np.allclose(Correct_Loss_History.history['loss'],
my_cnn_Loss_History.history['loss'],
atol=1e-1 * 6,
rtol=1e-3)
def test_evaluate():
my_cnn = CNN()
classes = 10
(X_train, y_train), (X_test, y_test) = cifar10.load_data()
y_train = keras.utils.to_categorical(y_train, classes)
y_test = keras.utils.to_categorical(y_test, classes)
X_train = X_train.astype('float32')
X_test = X_test.astype('float32')
X_train /= 255 - 0.5
X_test /= 255 - 0.5
number_of_train_samples_to_use = 500
X_train = X_train[0:number_of_train_samples_to_use, :]
y_train = y_train[0:number_of_train_samples_to_use]
model = Sequential()
model.add(
Conv2D(32, (3, 3),
padding='same',
activation='relu',
input_shape=(32, 32, 3)))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Conv2D(64, (3, 3), padding='same', activation='relu'))
model.add(Flatten())
model.add(Dense(512, activation='relu'))
model.add(Dense(classes, activation='softmax'))
opt = SGD(lr=0.01, momentum=0.0)
model.compile(optimizer=opt,
loss='categorical_crossentropy',
metrics=['accuracy'])
model.fit(X_train, y_train, batch_size=32, epochs=50)
evaluate = model.evaluate(X_test, y_test)
my_cnn.add_input_layer(shape=X_train.shape[1:], name="input")
my_cnn.append_conv2d_layer(num_of_filters=32,
kernel_size=3,
padding='same',
strides=1,
activation='relu',
name="conv1")
my_cnn.append_maxpooling2d_layer(pool_size=(2, 2), name='pool1')
my_cnn.append_conv2d_layer(num_of_filters=64,
kernel_size=3,
padding='same',
strides=1,
activation='relu',
name="conv2")
my_cnn.append_flatten_layer(name='flat')
my_cnn.append_dense_layer(num_nodes=512,
activation='relu',
trainable=True,
name='dense1')
my_cnn.append_dense_layer(num_nodes=classes,
activation='softmax',
trainable=True,
name='dense2')
my_opt = SGD(lr=0.01, momentum=0.0)
my_cnn.model.compile(optimizer=my_opt,
loss='categorical_crossentropy',
metrics=['accuracy'])
my_cnn.model.fit(X_train, y_train, batch_size=32, epochs=50)
my_eval = my_cnn.model.evaluate(X_test, y_test)
assert np.allclose(evaluate, my_eval, rtol=1e-1, atol=1e-1 * 6)
import tensorflow as tf
from cnn import CNN
batch_size = 64
num_classes = 10
epochs = 1
num_predictions = 20
(x_train, y_train), (x_test, y_test) = tf.keras.datasets.cifar10.load_data()
y_train = tf.keras.utils.to_categorical(y_train, num_classes)
y_test = tf.keras.utils.to_categorical(y_test, num_classes)
model = CNN()
model.add_input_layer(x_train.shape[1:])
model.append_conv2d_layer(num_of_filters=32,
kernel_size=3,
padding='same',
activation='relu')
model.append_conv2d_layer(num_of_filters=32,
kernel_size=3,
padding='same',
activation='relu')
model.append_maxpooling2d_layer(pool_size=2)
model.append_conv2d_layer(num_of_filters=64,
kernel_size=3,
padding='same',
activation='relu')
model.append_conv2d_layer(num_of_filters=64,
kernel_size=3,
padding='same',
activation='relu')
model.append_maxpooling2d_layer(pool_size=2)
def test_evaluate():
cnn = CNN()
classes = 10
bs = 50
epochs = 50
train_samples = 500
(x_train, y_train), (x_test, y_test) = cifar10.load_data()
x_train = x_train[0:train_samples, :]
y_train = y_train[0:train_samples, :]
x_test = x_test[0:train_samples, :]
y_test = y_test[0:train_samples, :]
y_train = keras.utils.to_categorical(y_train, classes)
y_test = keras.utils.to_categorical(y_test, classes)
x_train = x_train.astype('float32') / 255
x_test = x_test.astype('float32') / 255
model = keras.Sequential()
model.add(Conv2D(45, (1, 1), padding='same', activation='sigmoid'))
model.add(MaxPooling2D(pool_size=(2, 2)))
model.add(Conv2D(15, (3, 3), padding='same', activation='sigmoid'))
model.add(Flatten())
model.add(Dense(100, activation='sigmoid'))
model.add(Dense(classes, activation='softmax'))
o = keras.optimizers.RMSprop(learning_rate=0.002)
model.compile(loss='categorical_crossentropy',
optimizer=o,
metrics=['accuracy'])
model1 = model.fit(x_train, y_train, batch_size=bs, epochs=epochs)
evaluate1 = model.evaluate(x_test, y_test)
cnn.add_input_layer(x_train.shape[1:], name="input")
cnn.append_conv2d_layer(num_of_filters=32,
kernel_size=1,
padding='same',
strides=1,
activation='sigmoid',
name="c1")
cnn.append_maxpooling2d_layer(pool_size=(2, 2), name='p1')
cnn.append_conv2d_layer(num_of_filters=25,
kernel_size=3,
padding='same',
strides=1,
activation='sigmoid',
name="c2")
cnn.append_maxpooling2d_layer(pool_size=(3, 3), name='p2')
cnn.append_flatten_layer(name='flat')
cnn.append_dense_layer(num_nodes=150,
activation='sigmoid',
trainable=True,
name='d1')
cnn.append_dense_layer(num_nodes=classes,
activation='softmax',
trainable=True,
name='d2')
cnn.model.compile(loss='categorical_crossentropy',
optimizer=o,
metrics=['accuracy'])
model2 = cnn.model.fit(x_train, y_train, batch_size=bs, epochs=epochs)
evaluate2 = cnn.model.evaluate(x_test, y_test)
assert np.allclose(evaluate1, evaluate2, rtol=1e-1, atol=1e-1 * 6)
def test_eval():
my_cnn = CNN()
n_c = 5
train_s = 100
(X_train, Y_train), (X_test, Y_test) = datasets.cifar10.load_data()
X_train = X_train[0:train_s, :]
Y_train = Y_train[0:train_s, :]
X_test = X_test[0:train_s, :]
Y_test = Y_test[0:train_s, :]
Y_train = tf.keras.utils.to_categorical(Y_train)
Y_train = keras.utils.to_categorical(Y_test)
X_train = X_train.astype('float32') / 255
Y_train = Y_train.astype('float32') / 255
model = models.Sequential()
model.add(
layers.Conv2D(32, (3, 3), activation='relu', input_shape=(32, 32, 3)))
model.add(layers.MaxPooling2D((2, 2)))
model.add(layers.Conv2D(64, (3, 3), activation='relu'))
model.add(layers.MaxPooling2D((2, 2)))
model.add(layers.Conv2D(64, (3, 3), activation='relu'))
model.add(layers.Flatten())
model.add(layers.Dense(64, activation='relu'))
model.add(layers.Dense(10))
model.compile(
optimizer='adam',
loss=tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True),
metrics=['accuracy'])
#history = model.fit(X_train, Y_train,batch_size=20, epocs=100)
x = 1
my_cnn.add_input_layer(shape=(32, 32, 3), name="input")
my_cnn.append_conv2d_layer(num_of_filters=32,
kernel_size=(3, 3),
padding="same",
activation='linear',
name="conv1")
my_cnn.append_maxpooling2d_layer(pool_size=2,
padding="same",
strides=2,
name="pool1")
my_cnn.append_conv2d_layer(num_of_filters=8,
kernel_size=3,
activation='relu',
name="conv2")
test1 = [0] * 3
my_cnn.append_flatten_layer(name="flat1")
test1[1] = 3
my_cnn.append_dense_layer(num_nodes=10, activation="relu", name="dense1")
my_cnn.append_dense_layer(num_nodes=2, activation="relu", name="dense2")
assert x == 1
model.compile(
optimizer='adam',
loss=tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True),
metrics=['accuracy'])
model.compile(
optimizer='adam',
metrics=['accuracy'],
loss=tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True))
test = model.evaluate(X_test, Y_test)
#history = model.fit(x=X_train,y=Y_train,batch_size=100,epochs=200,shuffle=False)
test1[0] = 2
#history=my_cnn.train(X_train,Y_train,batch_size=100,num_epochs=200)
#test2=my_cnn.evaluate(X_test,Y_test)
assert test1[0] < test1[1]