الباحثون

Xu Chen

المنشورات 5

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Event-Centric Memory with Query-Aware Graph Augmentation for Long-Term Conversational Agents

Yichen Liu, Chunfeng Yuan, Haowei Liu وآخرون · 2026

For persistent and personalized conversational agents, memory systems can enable them to remember, update, and reason over long histories by storing past interactions and retrieving relevant information. Existing memory systems typically follow two paradigms: flat-structured memory and graph-based memory. The former is …

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SCBO: Semantically Coherent Batching and Ordering for LLM-Based Social Surveys

Yuanzi Li, Lingjie Wang, Zihang Tian وآخرون · 2026

Large Language Models (LLMs) offer a scalable way to simulate survey respondents using demographic profiles and observed reference responses. However, the conventional approach of predicting one question per prompt repeatedly encodes the same context, limits each target to a narrow set of reference responses, and preve …

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DeepSeek-V4.1-Flash: Pushing the Limits of KV Cache Compression

DeepSeek-AI, Anyi Xu, B. Li وآخرون · 2026

The widespread adoption of long-horizon agents has made model workloads increasingly input-heavy. Although prior work has substantially reduced the cost of long-context computation, prefill remains computationally expensive, and large KV caches continue to strain HBM and SSD capacity and data-transfer bandwidth. Togeth …

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Understanding Reliability in LLM-based Human Behavior Simulation

Pei Wang, Lei Wang, Yuanzi Li وآخرون · 2026

Large language models (LLMs) are increasingly used to simulate human survey responses and behavioral reactions, yet unreliable simulations can mislead social science conclusions. However, existing evaluations focus on end-to-end scores, leaving it unclear how different aspects of the simulation process interact to dete …

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