python – set_model()缺少1个必需的位置参数：’model’

set_model() missing 1 required positional argument: 'model'

这是我创建模型的代码：

model = Sequential()

model.add(Conv2D(64,(5,5),input_shape=(IMG_HEIGHT,IMG_WIDTH,3),activation='relu'))

model.add(Conv2D(64,activation='relu'))
model.add(MaxPooling2D((2,2)))
model.add(Dropout(0.2))

model.add(Conv2D(128,activation='relu'))
model.add(Conv2D(128,2)))
model.add(Dropout(0.2))

model.add(Conv2D(256,activation='relu'))
model.add(Conv2D(256,2)))
model.add(BatchNormalization(axis=3))
model.add(Dropout(0.2))

model.add(Flatten())
model.add(Dense(256,activation='relu'))

model.add(Dropout(0.5))

model.add(Dense(256,activation='relu'))

model.add(Dropout(0.5))
model.add(Dense(10,activation='softmax'))

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

learning_rate_reduction = ReduceLROnPlateau(monitor='val_acc',patience=3,verbose=1,factor=0.4,min_lr=0.0001)
csvlogger = CSVLogger("solution.csv",separator='t')
checkpoint = ModelCheckpoint("models/best_model5.h5",monitor="val_acc",save_best_only=True,mode='max')
learning_rate_reduction = ReduceLROnPlateau(monitor='val_acc',min_lr=0.00001)

class MyCallback(keras.callbacks.Callback):
    def on_epoch_end(self,epoch,logs=None):
        lr = self.model.optimizer.lr
        decay = self.model.optimizer.decay
        iterations = self.model.optimizer.iterations
        lr_with_decay = lr / (1. + decay * K.cast(iterations,K.dtype(decay)))
        print(K.eval(lr_with_decay))

model.fit_generator(datagen.flow(x_train,y_train,batch_size=75),epochs=10,validation_data=(x_validation,y_test),steps_per_epoch=x_train.shape[0],callbacks=[csvlogger,checkpoint,MyCallback])

如何通过此错误“set_model()缺少1个必需的位置参数：’model’
“
下面是堆栈跟踪

TypeError                                 Traceback (most recent call last)
<ipython-input-12-1826a19039cd> in <module>()
    128 model.fit_generator(datagen.flow(x_train,129                            epochs=10,--> 130                            steps_per_epoch=x_train.shape[0],MyCallback])
    131 model.save('trained_model5.h5')
    132 

/usr/local/lib/python3.6/dist-packages/keras/legacy/interfaces.py in wrapper(*args,**kwargs)
     89                 warnings.warn('Update your `' + object_name +
     90                               '` call to the Keras 2 API: ' + signature,stacklevel=2)
---> 91             return func(*args,**kwargs)
     92         wrapper._original_function = func
     93         return wrapper

/usr/local/lib/python3.6/dist-packages/keras/models.py in fit_generator(self,generator,steps_per_epoch,epochs,verbose,callbacks,validation_data,validation_steps,class_weight,max_queue_size,workers,use_multiprocessing,shuffle,initial_epoch)
   1274                                         use_multiprocessing=use_multiprocessing,1275                                         shuffle=shuffle,-> 1276                                         initial_epoch=initial_epoch)
   1277 
   1278     @interfaces.legacy_generator_methods_support

/usr/local/lib/python3.6/dist-packages/keras/legacy/interfaces.py in wrapper(*args,**kwargs)
     92         wrapper._original_function = func
     93         return wrapper

/usr/local/lib/python3.6/dist-packages/keras/engine/training.py in fit_generator(self,initial_epoch)
   2131         else:
   2132             callback_model = self
-> 2133         callbacks.set_model(callback_model)
   2134         callbacks.set_params({
   2135             'epochs': epochs,/usr/local/lib/python3.6/dist-packages/keras/callbacks.py in set_model(self,model)
     50     def set_model(self,model):
     51         for callback in self.callbacks:
---> 52             callback.set_model(model)
     53 
     54     def on_epoch_begin(self,logs=None):

TypeError: set_model() missing 1 required positional argument: 'model'

另外,我的另一个问题是,上述解决方案是否正确.This tensorflow link about Adam Optimizer建议学习率计算如下：

lr_t <- learning_rate * sqrt(1 – beta2^t) / (1 – beta1^t)

这似乎与其他链接中提到的解决方案完全不同.我错过了什么？