Delete 'DenseNet_tensorflow.py'

DenseNet_tensorflow.py

@@ -1,130 +0,0 @@
-import tensorflow as tf
-
-class BottleNeck(tf.keras.layers.Layer):
-    def __init__(self, growth_rate, drop_rate):
-        super(BottleNeck, self).__init__()
-        self.bn1 = tf.keras.layers.BatchNormalization()
-        self.conv1 = tf.keras.layers.Conv2D(filters=4 * growth_rate,
-                                            kernel_size=(1, 1),
-                                            strides=1,
-                                            padding="same")
-        self.bn2 = tf.keras.layers.BatchNormalization()
-        self.conv2 = tf.keras.layers.Conv2D(filters=growth_rate,
-                                            kernel_size=(3, 3),
-                                            strides=1,
-                                            padding="same")
-        self.dropout = tf.keras.layers.Dropout(rate=drop_rate)
-
-        self.listLayers = [self.bn1,
-                           tf.keras.layers.Activation("relu"),
-                           self.conv1,
-                           self.bn2,
-                           tf.keras.layers.Activation("relu"),
-                           self.conv2,
-                           self.dropout]
-
-    def call(self, x):
-        y = x
-        for layer in self.listLayers.layers:
-            y = layer(y)
-        y = tf.keras.layers.concatenate([x, y], axis=-1)
-        return y
-
-
-class DenseBlock(tf.keras.layers.Layer):
-    def __init__(self, num_layers, growth_rate, drop_rate=0.5):
-        super(DenseBlock, self).__init__()
-        self.num_layers = num_layers
-        self.growth_rate = growth_rate
-        self.drop_rate = drop_rate
-        self.listLayers = []
-        for _ in range(num_layers):
-            self.listLayers.append(BottleNeck(growth_rate=self.growth_rate, drop_rate=self.drop_rate))
-
-    def call(self, x):
-        for layer in self.listLayers.layers:
-            x = layer(x)
-        return x
-class TransitionLayer(tf.keras.layers.Layer):
-    def __init__(self, out_channels):
-        super(TransitionLayer, self).__init__()
-        self.bn = tf.keras.layers.BatchNormalization()
-        self.conv = tf.keras.layers.Conv2D(filters=out_channels,
-                                           kernel_size=(1, 1),
-                                           strides=1,
-                                           padding="same")
-        self.pool = tf.keras.layers.MaxPool2D(pool_size=(2, 2),
-                                              strides=2,
-                                              padding="same")
-
-    def call(self, inputs):
-        x = self.bn(inputs)
-        x = tf.keras.activations.relu(x)
-        x = self.conv(x)
-        x = self.pool(x)
-        return x
-class DenseNet(tf.keras.Model):
-    def __init__(self, num_init_features, growth_rate, block_layers, compression_rate, drop_rate):
-        super(DenseNet, self).__init__()
-        self.conv = tf.keras.layers.Conv2D(filters=num_init_features,
-                                           kernel_size=(7, 7),
-                                           strides=2,
-                                           padding="same")
-        self.bn = tf.keras.layers.BatchNormalization()
-        self.pool = tf.keras.layers.MaxPool2D(pool_size=(3, 3),
-                                              strides=2,
-                                              padding="same")
-        self.num_channels = num_init_features
-        self.dense_block_1 = DenseBlock(num_layers=block_layers[0], growth_rate=growth_rate, drop_rate=drop_rate)
-        self.num_channels += growth_rate * block_layers[0]
-        self.num_channels = compression_rate * self.num_channels
-        self.transition_1 = TransitionLayer(out_channels=int(self.num_channels))
-        self.dense_block_2 = DenseBlock(num_layers=block_layers[1], growth_rate=growth_rate, drop_rate=drop_rate)
-        self.num_channels += growth_rate * block_layers[1]
-        self.num_channels = compression_rate * self.num_channels
-        self.transition_2 = TransitionLayer(out_channels=int(self.num_channels))
-        self.dense_block_3 = DenseBlock(num_layers=block_layers[2], growth_rate=growth_rate, drop_rate=drop_rate)
-        self.num_channels += growth_rate * block_layers[2]
-        self.num_channels = compression_rate * self.num_channels
-        self.transition_3 = TransitionLayer(out_channels=int(self.num_channels))
-        self.dense_block_4 = DenseBlock(num_layers=block_layers[3], growth_rate=growth_rate, drop_rate=drop_rate)
-
-        self.avgpool = tf.keras.layers.GlobalAveragePooling2D()
-        self.fc = tf.keras.layers.Dense(units=10,
-                                        activation=tf.keras.activations.softmax)
-
-    def call(self, inputs):
-        x = self.conv(inputs)
-        x = self.bn(x)
-        x = tf.keras.activations.relu(x)
-        x = self.pool(x)
-
-        x = self.dense_block_1(x)
-        x = self.transition_1(x)
-        x = self.dense_block_2(x)
-        x = self.transition_2(x)
-        x = self.dense_block_3(x)
-        x = self.transition_3(x,)
-        x = self.dense_block_4(x)
-
-        x = self.avgpool(x)
-        x = self.fc(x)
-
-        return x
-
-def densenet():
-    return DenseNet(num_init_features=64, growth_rate=32, block_layers=[4,4,4,4], compression_rate=0.5, drop_rate=0.5)
-mynet=densenet()
-(x_train, y_train), (x_test, y_test) = tf.keras.datasets.fashion_mnist.load_data()
-x_train = x_train.reshape((60000, 28, 28, 1)).astype('float32') / 255
-x_test = x_test.reshape((10000, 28, 28, 1)).astype('float32') / 255
-
-mynet.compile(loss='sparse_categorical_crossentropy',
-              optimizer=tf.keras.optimizers.Adam(),
-              metrics=['accuracy'])
-
-history = mynet.fit(x_train, y_train,
-                    batch_size=64,
-                    epochs=5,
-                    validation_split=0.2)
-test_scores = mynet.evaluate(x_test, y_test, verbose=2)