collaborators

10 papers

cs.IR2026

BOUND: Brief-Guided Corrective Preference Distillation at Search-Control Boundaries

Qingying Niu, Ruiyang Ren, Wayne Xin Zhao +1

Large language model (LLM)-based deep search agents solve tasks through iterative retrieval and reasoning, but locally relevant evidence can cause persistent wrong-anchor drift, co…

cs.CL2026

Reinforced Informativeness Optimization for Long-Form Retrieval-Augmented Generation

Yuhao Wang, Ruiyang Ren, Yucheng Wang +4

Long-form question answering (LFQA) requires open-ended long-form responses that synthesize coherent, factually grounded content from multi-source evidence. This makes reinforcemen…

cs.CL2026

ArbGraph: Conflict-Aware Evidence Arbitration for Reliable Long-Form Retrieval-Augmented Generation

Qingying Niu, Yuhao Wang, Ruiyang Ren +2

Retrieval-augmented generation (RAG) remains unreliable in long-form settings, where retrieved evidence is noisy or contradictory, making it difficult for RAG pipelines to maintain…

cs.CL2026

A Survey of Large Language Models

Wayne Xin Zhao, Kun Zhou, Junyi Li +19

Language is essentially a complex, intricate system of human expressions governed by grammatical rules. It poses a significant challenge to develop capable AI algorithms for compre…

cs.AI2026

Emulating Clinician Cognition via Self-Evolving Deep Clinical Research

Ruiyang Ren, Yuhao Wang, Yunsen Liang +8

Clinical diagnosis is a complex cognitive process, grounded in dynamic cue acquisition and continuous expertise accumulation. Yet most current artificial intelligence (AI) systems…

cs.CL2025

BEE-RAG: Balanced Entropy Engineering for Retrieval-Augmented Generation

Yuhao Wang, Ruiyang Ren, Yucheng Wang +4

With the rapid advancement of large language models (LLMs), retrieval-augmented generation (RAG) has emerged as a critical approach to supplement the inherent knowledge limitations…