我正在尝试从我之前训练过的模型中删除顶层。这是我使用的代码:
import os
import h5py
import numpy as np
from keras.preprocessing.image import ImageDataGenerator
from keras.models import Sequential
from keras.layers import Convolution2D, MaxPooling2D, ZeroPadding2D
from keras.layers import Activation, Dropout, Flatten, Dense
# KERAS_BACKEND=theano python
import keras
keras.backend.set_image_dim_ordering("th")
img_width, img_height = 150, 150
data_dir = '//shared_directory/projects/try_CD/data/validation'
nb_train_samples = 2000
nb_validation_samples = 800
nb_epoch = 50
def make_bottleneck_features(model):
datagen = ImageDataGenerator(rescale=1./255)
generator = datagen.flow_from_directory(
data_dir,
target_size=(img_width, img_height),
batch_size=32,
class_mode=None,
shuffle=False)
bottleneck_features = model.predict_generator(generator, nb_validation_samples)
return (bottleneck_features)
model=keras.models.load_model('/shared_directory/projects/think_exp/CD_M1.h5')
A = make_bottleneck_features(model)
model.summary()
for i in range (6):
model.pop()
B = make_bottleneck_features(model)
model.summary()
比较对 model.summary() 的两次调用的结果,我可以看到确实删除了最顶层的 6 个。
但是,模型的输出(保存到 A 和 B)在丢弃这些层后不会改变。
这种差异的根源是什么?如何检索所需层的输出而不是整个模型的输出?
提前致谢!