张量流：无变量可保存

Question

导入喀拉拉邦

callbacks_list = [keras.callbacks.EarlyStopping(monitor="val_acc",patience=10),

 keras.callbacks.ModelCheckpoint(filepath="inception_model.h5",monitor="val_loss",s ave_best_only=True),

 keras.callbacks.TensorBoard(log_dir="tensor_log",histogram_freq=1,embeddings_freq=1)]

 model.compile(loss='mean_squared_error', optimizer='sgd',metrics=["acc"])

history = model.fit_generator(train_generator,steps_per_epoch=10,epochs=10,validation_data=validation_generator,validation_steps=1,verbose=2
                              ,callbacks=callbacks_list)

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ValueError：没有要保存的变量

我不明白为什么要建模。 fit无法运行脚本。