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Tan Zhi-Xuan

Massachusetts Institute of Technology

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#artificial intelligence Preprint Oct 2026

From Memory to Guide: Spatio-Temporal Composer for Procedural Coding Memory

Memory-augmented agents typically integrate procedural knowledge by injecting retrieved skills directly into text prompts. This approach dangerously equates readable text with reliable execution. To bridge this gap, we introduce From Memory to Guide, a novel paradigm that transitions procedural memory from passive text...

Tan Zhi-Xuan, Peng-Jie Gu, Zhao-Song Li et al. · 0 citations
#artificial intelligence Preprint Sep 2026

EngramBench: A Capability-Grounded Benchmark for Skill-Evolution Harnesses

While large language models have achieved remarkable success in isolated code generation, authentic software engineering requires sustained reasoning, complex state management, and continuous cross-domain abstraction. However, current evaluations of skill evolution in autonomous agents suffer from a critical identifiab...

Tan Zhi-Xuan, Peng-Jie Gu, Zhao-Song Li et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Rational Clarification by Assistive Agents via Value-of-Information Reasoning

Users of language-based assistive agents often make ambiguous requests. In response, an assistant can either directly act on its interpretation of the request --- risking misalignment with the user --- or ask a clarifying question. Which option is the most safe and helpful? A common approach is to ask questions that mi...

T. Nguyen-Hien, Y. Teh, Wee-Sun Lee et al. · 0 citations
#artificial intelligence Preprint Sep 2026

CogGym: Towards Large-Scale Comparative Evaluation of Human and Machine Cognition

CogGym is introduced, a scalable, unified framework grounded in cognitive science for systematically comparing model and human behavior on matched experimental trials, and intends for CogGym to provide a living evaluation framework that continually incorporates new cognitive science experiments to characterize where mo...

Lance Ying, Jin-Zhou Wu, Y. Wang et al. · 0 citations
#natural language process... Preprint Aug 2026

Evaluating Rational Contracting in Natural Language

It is found that current LLM-based agents reach agreement reliably, and negotiate efficient contracts when environmental uncertainty is low, but under high uncertainty, they often fail to negotiate satisfiable, efficient, or mutually beneficial contracts.

Bhavyesh Sajja, Max Kleiman-Weiner, R. Zimmermann et al. · 0 citations

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