WILDCHAT-50M: A Deep Dive Into the Role of Synthetic Data in Post-Training

🤗 Upvotes: 10 | cs.LG, cs.CL

Authors:
Benjamin Feuer, Chinmay Hegde

Title:
WILDCHAT-50M: A Deep Dive Into the Role of Synthetic Data in Post-Training

Arxiv:
http://arxiv.org/abs/2501.18511v1

Abstract:
Language model (LLM) post-training, from DPO to distillation, can refine behaviors and unlock new skills, but the open science supporting these post-training techniques is still in its infancy. One limiting factor has been the difficulty of conducting large-scale comparative analyses of synthetic data generating models and LLM judges. To close this gap, we introduce WILDCHAT-50M, the largest public chat dataset to date. We extend the existing WildChat dataset to include responses not only from GPT, but from over 50 different open-weight models, ranging in size from 0.5B to 104B parameters. We conduct an extensive comparative analysis and demonstrate the potential of this dataset by creating RE-WILD, our own public SFT mix, which outperforms the recent Tulu-3 SFT mixture from Allen AI with only 40% as many samples. Our dataset, samples and code are available at https://github.com/penfever/wildchat-50m.

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