Comments (1)
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The matrix C is the external memory matrix as you mentioned. It is a separate learnable parameter however, it could be tied to be equal to M (I have not tried this). If we follow the traditional memory network view: M are the keys and C are the values. We query the keys with the embedding and extract the corresponding memory values in C.
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Its possible we could use M to aggregate the attention scores that is setting C=M and tying the weights as I mentioned earlier. If I remember correctly an issue is the key values get very large since they compete to be selected in the attention mechanism. So having separate parameters may alleviate this problem. I suspect that the softmax function is not the correct function to represent attention over a large neighborhood.
Hope this helps and good luck in your research.
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Related Issues (10)
- A problem about the paper's equation 5 HOT 6
- Questions about the requirement of environment HOT 4
- train.py crash InvalidArgumentError HOT 12
- Have you try to use this method deal with the explicit score prediction? HOT 2
- Have you test the proposed model on the movielens-1m data set? HOT 2
- Loss isn't decreasing HOT 4
- Reinitialization of hop_mapping HOT 1
- Sharing item outputs HOT 2
- Regarding masking on the scores HOT 2
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