在Keras中修改图层权重 [英] Modify layer weights in Keras
问题描述
我正在尝试在Keras中修改图层的输出。我有一个编码器,可以将时间序列转换为潜在空间,然后,对于每个压缩的时间序列,我想在时间序列中添加一些数字。
例如我有:
input_d = Input((100 ,))
h1_d =重塑((100,1))(input_d)
h2_d = LSTM(150,return_sequences = True)(h1_d)
h3_d = TimeDistributed(Dense(64,激活='linear'))(h2_d)
h4_d = LSTM(150)(h3_d)
output_d = Dense(30,激活='linear')(h4_d)
我想做这样的事情:
new_weights = []
for i in output_d.weights:
new_weights.append(np.vstack(([[1,2,3],i)))
但是问题是我不知道在哪一刻可以这样做,因为如果在<$ c之后写一个Lambda层$ c> ouput_d 我无法访问砝码。
我发现执行此操作的唯一方法是将所需功能实现为回调,您可以在其中进行访问通过 self.model.trainable_weights
或 self.model.get_weights()
来确定权重。 / p>
I'm trying to modify the output of a layer in Keras. I have an encoder which transforms a time series into latent space and after that, for each time series compressed I want to add some numbers to the time series.
For example I have:
input_d = Input((100,))
h1_d = Reshape((100, 1))(input_d)
h2_d = LSTM(150, return_sequences=True)(h1_d)
h3_d = TimeDistributed(Dense(64, activation='linear'))(h2_d)
h4_d = LSTM(150)(h3_d)
output_d = Dense(30, activation='linear')(h4_d)
And I want to do something like this:
new_weights = []
for i in outputs_d.weights:
new_weights.append(np.vstack(([1,2,3], i)))
But the problem is that I don't know in which moment I can do this because if a write a Lambda layer after ouput_d
I can't access the weights.
The only way I have found to do something like this is by implementing the desired functionality as a Callback, where you have access to the model and thus to the weights through self.model.trainable_weights
or self.model.get_weights()
.
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