Author

Quanyu Long

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#natural language process... Preprint Oct 2026

From Traces to Agentic Worlds: Agentic Language World Models for Interactive Environment Simulation

Realistic environment replicas are increasingly valuable for training and evaluating LLM agents, yet the original systems may be inaccessible or impractical to reproduce. We explore agentic language world modeling: rather than rebuilding an executable environment, a world model agent serves as the environment for a tas...

Quan-Yu Long, Xiao Chen, Jian-Da Chen et al. · 0 citations

#artificial intelligence Preprint Oct 2026

MemPilot: Orchestrating On-Demand Multimodal Memory Curation for LLM Agents

Memory has become integral to the LLM agent ecosystem, supporting information retention and reuse across interactions. However, most existing agent memory systems construct memory in a query-agnostic manner, which can incur unnecessary preprocessing cost and discard details that later prove essential. Recent studies ha...

Haozhen Zhang, Hao-Dong Yue, Quan-Yu Long et al. · 0 citations

Preprint Sep 2026

The Shape of Time: Video-Token Contrast for Temporal Understanding in VideoLMs

VT-Contrast supervises selected late-layer last-frame video tokens, where temporal information is expected to be integrated before language generation, and contrasts order-preserving views with same-video reordered counterfactuals graded by Kendall tau distance.

Yu-Meng Shi, Quan-Yu Long, Yin Wu et al. · 0 citations