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Weiyan Shi

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Preprint Aug 2026

One Frozen Simulator Is Not Enough: Simulator Collapse in Multi-Agent RL

The results suggest that the diversity of the training environment, not only the policy, is critical to the generalization of multi-turn RL to real-world deployment, and releases SCOPE, an open-source framework for Population Co-Training multi-agent RL.

Simon Yu, Nicholas Tomlin, Marwa Abdulhai et al. · 2 citations
Preprint Aug 2026

SPADE: Self-Play in Adaptive Synthetic Executable Environments

SPADE (Self-Play in Adaptive Synthetic Executable Executable Environments), a self-play RL framework in which a single LLM plays two roles: an Environment Designer that writes complete, long-horizon training environments as executable code with an OpenAI Gym-style reset()/step() interface, and a Reasoning Agent that le...

Bo Liu, Simon Yu, Yiding Jiang et al. · 7 citations
#artificial intelligence Preprint Aug 2026

SPADE: Self-Play in Adaptive Synthetic Executable Environments

SPADE (Self-Play in Adaptive Synthetic Executable Executable Environments), a self-play RL framework in which a single LLM plays two roles: an Environment Designer that writes complete, long-horizon training environments as executable code with an OpenAI Gym-style reset()/step() interface, and a Reasoning Agent that le...

Bo Liu, Simon Yu, Yiding Jiang et al. · 1 citation

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