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cs.CL2026

AdaPlanBench: Evaluating Adaptive Planning in Large Language Model Agents under World and User Constraints

Jiayu Liu, Cheng Qian, Zhenhailong Wang +10

Planning for real-world problems by language models often involves both world and user constraints, which may not be fully specified upfront and are progressively disclosed through…

cs.CL2026

MemGuard: Preventing Memory Contamination in Long-Term Memory-Augmented Large Language Models

Hyeonjeong Ha, Jeonghwan Kim, Cheng Qian +7

Memory-augmented large language models extend reasoning beyond a fixed context window by maintaining long-term memory across interactions. However, existing memory systems often co…

cs.CL2026

UserHarness: Harnessing User Minds for Stronger Agent Theory-of-Mind

Cheng Qian, Jiayu Liu, Heng Ji

Understanding what a user believes and intends is central to building effective agent assistants. This ability is often evaluated through Theory-of-Mind (ToM) tasks, where success…

cs.CL2026

Code2Math: Can Your Code Agent Effectively Evolve Math Problems Through Exploration?

Dadi Guo, Yuejin Xie, Qingyu Liu +11

As large language models (LLMs) advance their mathematical capabilities toward the IMO and research level, the scarcity of challenging, high-quality problems has become a significa…

cs.CL2025

Diversity-Enhanced Reasoning for Subjective Questions

Yumeng Wang, Zhiyuan Fan, Jiayu Liu +2

Large Reasoning Models (LRMs) with long chain-of-thought capabilities, optimized via reinforcement learning with verifiable rewards (RLVR), excel at objective reasoning tasks like…