Mismatch between Fig. 4 (Feature Extractor Module) of paper and implementaion

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
32/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
python

Research direction

Start by comparing Fig. 4 of the paper with the feature extractor's forward method, including the forward_part1 and forward_part2 calls and the point where q_f is applied. Determine whether the implementation matches the diagram or whether the diagram needs clarification; done means the discrepancy is resolved and documented or corrected with supporting tests.

Written by the indexing model from the issue text.

Description

Hi and thanks for your great work

In figure 4 of the paper, we have this diagram for Feature Extractor module:

Image

The second part (four DC block) takes $F_{t-1}^e$ as input right? but in the implementation:

    def forward(self, x, quant):
        x1, ctx_t = self.forward_part1(x, quant)
        ctx = self.forward_part2(x1)
        return ctx, ctx_t

you passed x1 (output of first part BEFORE multiplying by $q_f$

why?

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