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Yejin Choi

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MemoryArena: Benchmarking Agent Memory in Interdependent Multi-Session Agentic Tasks

MemoryArena is introduced, a unified evaluation gym for benchmarking agent memory in multi-session Memory-Agent-Environment loops with explicitly interdependent subtasks, where agents must learn from earlier actions and feedback by distilling experiences into memory, and subsequently use that memory to guide later acti...

Zexue He, Yu Wang, Churan Zhi et al. · 80 citations · ⚡16
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
Preprint Aug 2026

Prefix Sliding for efficient test-time scaling

Prefix Sliding is proposed, which discards tokens during reasoning that are not part of the prefix or the window of the last few thousand tokens, allowing for efficient long-horizon test-time scaling.

Niklas Muennighoff, Zhengyuan Wang, Zeya Chen et al. · 1 citation · ⚡1
#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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