python - 有没有办法重命名 Keras 模型的指标和损失？

Question

我有一个非常大的模型，有很多损失和指标。当我执行 print(np.array(self.model.metrics_names))我明白了:

['loss' 'autoencoder_loss' 'autoencoder_loss' 'autoencoder_loss'
 'autoencoder_loss' 's_regularisation_phase_loss'
 'gen_regularisation_phase_loss' 's_regularisation_phase_loss'
 'z_regularisation_phase_loss' 'gen_regularisation_phase_loss'
 'z_regularisation_phase_loss' 'gen_regularisation_phase_loss'
 'gen_regularisation_phase_loss' 'autoencoder_categorical_accuracy'
 'autoencoder_output' 'autoencoder_categorical_accuracy_1'
 'autoencoder_output_1' 'autoencoder_categorical_accuracy_2'
 'autoencoder_output_2' 'autoencoder_categorical_accuracy_3'
 'autoencoder_output_3' 's_regularisation_phase_categorical_accuracy'
 's_regularisation_phase_output'
 'gen_regularisation_phase_categorical_accuracy'
 'gen_regularisation_phase_output'
 's_regularisation_phase_categorical_accuracy_1'
 's_regularisation_phase_output_1'
 'z_regularisation_phase_categorical_accuracy'
 'z_regularisation_phase_output'
 'gen_regularisation_phase_categorical_accuracy_1'
 'gen_regularisation_phase_output_1'
 'z_regularisation_phase_categorical_accuracy_1'
 'z_regularisation_phase_output_1'
 'gen_regularisation_phase_categorical_accuracy_2'
 'gen_regularisation_phase_output_2'
 'gen_regularisation_phase_categorical_accuracy_3'
 'gen_regularisation_phase_output_3']

有没有办法给它们起更有意义的名字？

Answer 1

每个_loss和_accuracy之前的名称来自输出层的名称。如果要修改此名称，您应该重命名输出层。

考虑以下模型。

input_ =  keras.layers.Input(shape=(8,))
x =  keras.layers.Dense(16)(input_)
output1 = keras.layers.Dense(32, name="output1")(x)
output2 = keras.layers.Dense(32, name="output2")(x)
model = keras.models.Model(inputs=input_, outputs=[output1, output2])
model.compile(loss=["mse", "mae"], optimizer="adam", metrics={"output1":"accuracy","output2":"accuracy"})

现在model.metrics_names将为您提供以下列表

['loss', 'output1_loss', 'output2_loss', 'output1_acc', 'output2_acc']