python - 属性错误 : 'list' object has no attribute 'set_model'

Question

我在训练深度卷积神经网络时尝试使用提前停止和模型检查点来保存最佳模型。但是，我收到以下错误:

 callback.set_model(model)
 AttributeError: 'list' object has no attribute 'set_model'

到目前为止我的代码是:

model = Sequential()

###First block
model.add(Conv2D(100,kernel_size = (3,3),activation = 'relu',padding = 'same',input_shape=(12,11,1)))
model.add(Conv2D(100,kernel_size = (3,3),activation = 'relu',padding = 'same'))
model.add(MaxPooling2D(pool_size = (2,2)))
model.add(Dropout(0.20))


###Second block

model.add(Conv2D(128,kernel_size = (3,3),activation = 'relu',padding = 'same'))
model.add(Conv2D(128,kernel_size = (3,3),activation = 'relu',padding = 'same'))
model.add(MaxPooling2D(pool_size = (2,2)))
model.add(Dropout(0.10))


model.add(Flatten())

#model.add(Dense(100,activation = 'relu',kernel_regularizer=regularizers.l2(0.01)))
model.add(Dense(1000,activation = 'relu',kernel_regularizer=regularizers.l2(0.01)))
model.add(Dropout(0.30))
model.add(Dense(500,activation = 'relu',kernel_regularizer=regularizers.l2(0.01)))
model.add(Dropout(0.10))
#model.add(Dense(500,activation = 'relu',kernel_regularizer=regularizers.l2(0.01)))
#model.add(Dropout(0.15))

model.add(Dense(5,activation = 'softmax')) 

model.compile(loss='categorical_crossentropy',
              optimizer='adam',
              metrics=['accuracy'])


earlystop = [EarlyStopping(monitor='val_acc', min_delta=0.001, patience=5,
                          verbose=1, mode='auto')]


outputModel = 'outputModel'

model_json = model.to_json()
with open(outputModel+".json", "w") as json_file:
    json_file.write(model_json)
modWeightsFilepath=outputModel+"_weights.hdf5"
checkpoint = ModelCheckpoint(modWeightsFilepath, monitor='val_acc', verbose=1, save_best_only=True, save_weights_only=True, mode='auto')

callbacks_list = [earlystop,checkpoint]


history = model.fit(x_train, Y,
      batch_size=100, ##number of observations per batch
      epochs=100, ##Number of epochs
      callbacks = callbacks_list,
      verbose=1,
      shuffle = True,
      validation_split=0.2) ###Data for evaluation

我不知道我做错了什么。我读到 ModelCheckPoint 和 earlystopping 应该作为一个列表给出，这就是为什么我明确地将其作为:

  callbacks_list = [earlystop,checkpoint]

帮助将不胜感激。

Answer 1

关于回调，您是正确的，但是 earlystop 已经是这里的列表。删除 [EarlyStopping(..)] 周围的括号以解决问题。