About me

  • I have been an Applied Scientist II at Amazon since May 2024. Before joining Amazon, I obtained my CS PhD from Georgia Institute of Technology specializing in Machine Learning, with publications at ICLR, NeurIPS, ACL, EMNLP, and more, co-advised by Prof. Srijan Kumar and Prof. Mustaque Ahamad.
  • At Amazon, I post-train LLMs (from 35B to 1.6T MoE LLMs) and build self-improving coding and ads agents on the Amazon Ads Foundation Model & AWS CodeLLM teams. My current focus areas are:
    • LLM Post-Training: SFT, preference alignment (DPO and KTO), RL (e.g., PPO, GRPO, DAPO, GSPO) including agentic long-horizon RL and reasoning RL, and model consolidation (data & weight mixing, OPD/MT-OPD/OPSD)
    • Recursive Self-Improvement (RSI): Self-evolving agents that update their own harnesses (skills, memory, prompts, and workflows), and autonomous AI research systems that improve and post-train LLMs
    • Agents, Datasets, and Benchmarks: Tool-use and coding agents, LLM reasoning, synthetic datasets, data curation pipelines and RL environments, LLM-as-a-judge, and benchmarks
  • I also serve on the program committees (e.g., as a reviewer) of top AI/ML/LLM conferences, such as ICLR, IJCAI, KDD, and WWW. Besides, I am always available for academic collaborations from academia and industry. Please feel free to contact me if you have research ideas or industry collaborations.
  • Contact: bhe46[at]gatech.edu / bing.he[at]cc.gatech.edu / LinkedIn Message

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