x1 = layers.Input(shape=(90, 90, 1)) x2 = layers.Input(shape=(90, 90, 1))
时间: 2023-10-11 15:07:30 浏览: 34
These two lines of code define two input layers for a neural network model. Each input layer has a shape of (90, 90, 1), which means that it expects input data in the form of a 90x90 grayscale image. The "1" at the end of the shape indicates that the image has only one channel (i.e., it is a grayscale image).
These input layers can be used to concatenate or merge different inputs to the model, such as images or other types of data. For example, if we have two different images (x1 and x2) that we want to feed into the same model, we can use these input layers to define the input shapes for each image and then concatenate them using a concatenation layer.
相关问题
def conv_block(inputs, filters): x = layers.BatchNormalization()(inputs) x = layers.Activation('relu')(x) x = layers.Conv2D(filters, 1, padding='same')(x) x = layers.BatchNormalization()(x) x = layers.Activation('relu')(x) x = layers.Conv2D(filters, 3, padding='same')(x) x = layers.Conv2D(filters, 1, padding='same')(x) return x def dense_block(inputs, filters, n_layers): x = inputs for i in range(n_layers): conv = conv_block(x, filters) x = layers.Concatenate()([x, conv]) return x def transition_block(inputs, compression): filters = int(inputs.shape[-1] * compression) x = layers.BatchNormalization()(inputs) x = layers.Activation('relu')(x) x = layers.Conv2D(filters, 1, padding='same')(x) x = layers.AveragePooling2D(2)(x) return x def Inception_block(inputs, filters): x1 = layers.Conv2D(filters, 1, padding='same', activation='relu')(inputs) x2 = layers.Conv2D(filters, 1, padding='same', activation='relu')(inputs) x2 = layers.Conv2D(filters, 3, padding='same', activation='relu')(x2) x3 = layers.Conv2D(filters, 1, padding='same', activation='relu')(inputs) x3 = layers.Conv2D(filters, 5, padding='same', activation='relu')(x3) x4 = layers.MaxPooling2D(3, strides=1, padding='same')(inputs) x4 = layers.Conv2D(filters, 1, padding='same', activation='relu')(x4) x = layers.Concatenate()([x1, x2, x3, x4]) return x inputs = keras.Input(shape=(224, 224, 3)) x = layers.Conv2D(64, 7, strides=2, padding='same')(inputs) x = layers.BatchNormalization()(x) x = layers.Activation('relu')(x) x = layers.MaxPooling2D(3, strides=2, padding='same')(x) x = dense_block(x, 32, 6) x = transition_block(x, 0.5) x = Inception_block(x, 64) x = dense_block(x, 32, 12) x = transition_block(x, 0.5) x = Inception_block(x, 128) x = dense_block(x, 32, 48) x = transition_block(x, 0.5) x = Inception_block(x, 256) x = layers.GlobalAveragePooling2D()(x) outputs = layers.Dense(10, activation='softmax')(x) model = keras.Model(inputs, outputs)这串代码有问题
这段代码并没有明显的语法错误,但是其中使用的函数和模块并未导入。需要在代码文件开头导入所需的模块和函数,例如:
```
from tensorflow import keras
from tensorflow.keras import layers
def conv_block(inputs, filters):
x = layers.BatchNormalization()(inputs)
x = layers.Activation('relu')(x)
x = layers.Conv2D(filters, 1, padding='same')(x)
x = layers.BatchNormalization()(x)
x = layers.Activation('relu')(x)
x = layers.Conv2D(filters, 3, padding='same')(x)
x = layers.Conv2D(filters, 1, padding='same')(x)
return x
def dense_block(inputs, filters, n_layers):
x = inputs
for i in range(n_layers):
conv = conv_block(x, filters)
x = layers.Concatenate()([x, conv])
return x
def transition_block(inputs, compression):
filters = int(inputs.shape[-1] * compression)
x = layers.BatchNormalization()(inputs)
x = layers.Activation('relu')(x)
x = layers.Conv2D(filters, 1, padding='same')(x)
x = layers.AveragePooling2D(2)(x)
return x
def Inception_block(inputs, filters):
x1 = layers.Conv2D(filters, 1, padding='same', activation='relu')(inputs)
x2 = layers.Conv2D(filters, 1, padding='same', activation='relu')(inputs)
x2 = layers.Conv2D(filters, 3, padding='same', activation='relu')(x2)
x3 = layers.Conv2D(filters, 1, padding='same', activation='relu')(inputs)
x3 = layers.Conv2D(filters, 5, padding='same', activation='relu')(x3)
x4 = layers.MaxPooling2D(3, strides=1, padding='same')(inputs)
x4 = layers.Conv2D(filters, 1, padding='same', activation='relu')(x4)
x = layers.Concatenate()([x1, x2, x3, x4])
return x
inputs = keras.Input(shape=(224, 224, 3))
x = layers.Conv2D(64, 7, strides=2, padding='same')(inputs)
x = layers.BatchNormalization()(x)
x = layers.Activation('relu')(x)
x = layers.MaxPooling2D(3, strides=2, padding='same')(x)
x = dense_block(x, 32, 6)
x = transition_block(x, 0.5)
x = Inception_block(x, 64)
x = dense_block(x, 32, 12)
x = transition_block(x, 0.5)
x = Inception_block(x, 128)
x = dense_block(x, 32, 48)
x = transition_block(x, 0.5)
x = Inception_block(x, 256)
x = layers.GlobalAveragePooling2D()(x)
outputs = layers.Dense(10, activation='softmax')(x)
model = keras.Model(inputs, outputs)
```
class CNN(Model): def __init__(self): super(CNN, self).__init__() ## self.x1 = Input(shape =(1024,1,1)) self.inputshape = tf.keras.layers.InputLayer(input_shape=(1024,1,1)) self.c1 = Conv2D(filters=64, kernel_size=(2, 1), activation='relu',input_shape=(1024,1,1)) self.c2 = Conv2D(filters=64, kernel_size=(2, 1), activation='relu') self.c3 = Conv2D(filters=64, kernel_size=(2, 1), activation='relu') self.flatten = Flatten() self.f1 = Dense(360, activation='relu') self.f2 = Dense(184, activation='relu') self.f3 = Dense(4, activation='softmax') def zx(self, input): x = self.inputshape(input.astype(np.float32)) return self.c1(x) def zx1(self, input): x = self.inputshape(input.astype(np.float32)) x = self.c1(x) x = self.c2(x) x = self.c3(x) x = self.flatten(x) print(x.shape) x = self.f1(x) return self.f2(x) def call(self, input): x = self.inputshape(input) x = self.c1(x) x = self.c2(x) x = self.c3(x) x = self.flatten(x) print(x.shape) x = self.f1(x) self.x2 = self.f2(x) y = self.f3(self.x2) return y model = CNN() model.build(input_shape=(None,1024,1,1)) model.compile(optimizer='adam', loss=tf.keras.losses.SparseCategoricalCrossentropy(from_logits=False), metrics=['sparse_categorical_accuracy']) 该CNN模型每层网络的参数如何
这个CNN模型共有5个卷积层和3个全连接层,每个卷积层都使用ReLU激活函数。具体参数如下:
- 输入层:输入形状为(1024,1,1)的张量
- 卷积层c1:使用64个大小为(2,1)的卷积核,步长为(1,1),padding方式为"valid",输出张量形状为(1023,1,64)
- 卷积层c2:使用64个大小为(2,1)的卷积核,步长为(1,1),padding方式为"valid",输出张量形状为(1022,1,64)
- 卷积层c3:使用64个大小为(2,1)的卷积核,步长为(1,1),padding方式为"valid",输出张量形状为(1021,1,64)
- 将输出张量展平为形状为(65504,)的向量
- 全连接层f1:输出向量形状为(360,),使用ReLU激活函数
- 全连接层f2:输出向量形状为(184,),使用ReLU激活函数
- 输出层:输出向量形状为(4,),使用softmax激活函数