We just released TRL v0.20 with major multimodal upgrades!
👁️ VLM support for GRPO (highly requested by the community!) 🎞️ New GSPO trainer (from @Qwen, released last week, VLM-ready) 🐙 New MPO trainer (multimodal by design, as in the paper)
🧑🍳 In this @HuggingFace Face Cookbook notebook, we demonstrate how to align a multimodal model (VLM) using Mixed Preference Optimization (MPO) using trl.
💡 This recipe is powered by the new MPO support in trl, enabled through a recent upgrade to the DPO trainer!
We align the multimodal model using multiple optimization objectives (losses), guided by a preference dataset (chosen vs. rejected multimodal pairs).
⚡️ In this new @huggingface Cookbook recipe, I walk you though the process of fine tuning a Visual Language Model (VLM) for Object Detection with Visual Grounding, using TRL.
🔍 Object detection typically involves detecting categories in images (e.g., vase).
By combining it with visual grounding, we add contextual understanding so instead of detecting just "vase", we can detect "middle vase" in an image.
VLMs are super powerful!
In this case, I use PaliGemma 2 which already supports object detection and extend it to also add visual grounding.
