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🚨 [Idefics2] Update ignore index #30898
🚨 [Idefics2] Update ignore index #30898
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The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update. |
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Thanks for adding!
Two things to update before merging:
- Docstring info to match this logic
- Add an example in on modeling pad on how to mask, as users will likely not know to mask the images
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thanks!
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Thanks for updating and providing an example!
Added a 🚨 to flag that this is a breaking change
Thanks, btw @VictorSanh could you update the DocVQA notebook to account for this change? |
* Update ignore index * Update docs * Update docs
good point! done! |
* Update ignore index * Update docs * Update docs
* Update ignore index * Update docs * Update docs
What does this PR do?
This PR proposes to set the ignore index of the loss function of Idefics2 like the value of any other LLM/multimodal in the Transformers library, which is -100 (the default ignore index of PyTorch's cross-entropy loss).
It's up to users to create the labels and set whatever they don't want to be included in the loss calculation to -100. In the case of Idefics2, this could look like so:
which means, it's up to the user to make sure padding and image tokens are ignored.