Megvii-BaseDetection / Megvii-BaseDetection/YOLOX

I don't understand how to calculate pair_ wise_ cls_ loss

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Python
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Description

    pair_wise_cls_loss = F.binary_cross_entropy(
        cls_preds_.sqrt_(), gt_cls_per_image, reduction="none"
    ).sum(-1)

cls_preds_.sqrt_()??????Why CLS_ preds_ take a square root????

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Research direction

Start with the shown binary_cross_entropy call and trace the surrounding loss calculation in the repository. Determine why cls_preds_.sqrt_() is used and document what the square-rooted values represent; done means the rationale is explained clearly for users reading this expression.

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Assessment

Tech stack
python, pytorch
Domain
machine-learning
Issue type
Documentation
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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