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[GH-ISSUE #387] I'm confused that logits_per_text is just transpose of logits_per_text. #332

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opened 2026-10-31 21:13:58 +00:00 by bsakaguchi · 0 comments
bsakaguchi commented 2026-10-31 21:13:58 +00:00
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Originally created by @nietzsche9088 on GitHub (Sep 15, 2023).
Original GitHub issue: https://github.com/openai/CLIP/issues/387

Thanks for your contribution!

When I'm reviewing the source code of CLIP, I found out that the output of "model(img,text)" is a list of two same-value tensors. Back to /clip/model.py, it shows model.eval() prints logits_per_image, and logits_per_text, and the latter one is just a transpose of the former one. Besides, the logits_per_image is already the multiplication of image features and text features.

I'd appreciate it if someone could answer my confusion.

Originally created by @nietzsche9088 on GitHub (Sep 15, 2023). Original GitHub issue: https://github.com/openai/CLIP/issues/387 Thanks for your contribution! When I'm reviewing the source code of CLIP, I found out that the output of "model(img,text)" is a list of two same-value tensors. Back to /clip/model.py, it shows model.eval() prints logits_per_image, and logits_per_text, and the latter one is just a transpose of the former one. Besides, the logits_per_image is already the multiplication of image features and text features. I'd appreciate it if someone could answer my confusion.
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