我收到关于展平图层输入尺寸的错误。
ValueError: The shape of the input to "Flatten" is not fully defined (got (0, 12, 10). Make sure to pass a complete "input_shape" or "batch_input_shape" argument to the first layer in your model.
我收到此错误,因为我的一个尺寸为零,对吗?试图找出为什么它被降低到零,但不确定这个错误发生在哪里。
我一直在尝试计算在展平图层之前卷积图层之后输出应该是什么。与model.summary()
相比,我无法让他们排队。
我不确定model.summary()
输出形状是如何格式化的,是无,宽度,长度,深度?
我用来计算输出形状的公式:(width - filter_size + 2(padding)/shifting) + 1
格式:深度,宽度,高度
第一卷积形状:10,14,14
第二卷积形状:10,12,12
有人可以解释为什么在下面的model.summary()
输出形状列中减少第一个整数值的深度?
```
_________________________________________________________________
_________________________________________________________________
Layer (type) Output Shape Param #
=================================================================
conv2d_9 (Conv2D) (None, 2, 14, 10) 1450
_________________________________________________________________
activation_9 (Activation) (None, 2, 14, 10) 0
_________________________________________________________________
conv2d_10 (Conv2D) (None, 0, 12, 10) 910
_________________________________________________________________
activation_10 (Activation) (None, 0, 12, 10) 0
=================================================================
Total params: 2,360
Trainable params: 2,360
Non-trainable params: 0
```
在我的Convolution2D图层中输入的形状似乎输入不正确,但我已根据文档建议输入。
```
model = Sequential()
batch_size = 20
nb_epoch = 20
nb_filters = 10
kernel_size = (3, 3)
input_shape = (4, 16, 16)
pool_size =(2, 2)
model.add(Convolution2D(nb_filters, (kernel_size[0], kernel_size[1]), input_shape=input_shape, kernel_initializer='TruncatedNormal'))
model.add(Activation('relu'))
model.add(Convolution2D(nb_filters, (kernel_size[0], kernel_size[1]), kernel_initializer='TruncatedNormal'))
model.add(Activation('relu'))
model.add(MaxPooling2D(pool_size=pool_size))
model.summary()
# model.add(Dropout(0.5))
model.add(Flatten())
model.add(Dense(64, activation='relu'))
model.add(Dropout(.3))
model.add(Dense(1, activation='sigmoid'))
model.compile(loss = 'binary_crossentropy', optimizer='Adamax', metrics=['accuracy'])
```
后端:Theano