activity
20202025
most citedLearning Implicit User Profiles for Personalized Retrieval-Based Chatbot

22 citations · 74 across the 21 of their papers we have counts for

collaborators

24 papers

cs.CL2025

FinSight: Towards Real-World Financial Deep Research

Jiajie Jin, Yuyao Zhang, Yimeng Xu +3

Generating professional financial reports is a labor-intensive and intellectually demanding process that current AI systems struggle to fully automate. To address this challenge, w…

cs.AI2025★ 2 cited

HiRA: A Hierarchical Reasoning Framework for Decoupled Planning and Execution in Deep Search

Jiajie Jin, Xiaoxi Li, Guanting Dong +5

Complex information needs in real-world search scenarios demand deep reasoning and knowledge synthesis across diverse sources, which traditional retrieval-augmented generation (RAG…

cs.CL2025★ 4 cited

Tool-Star: Empowering LLM-Brained Multi-Tool Reasoner via Reinforcement Learning

Guanting Dong, Yifei Chen, Xiaoxi Li +7

Recently, large language models (LLMs) have shown remarkable reasoning capabilities via large-scale reinforcement learning (RL). However, leveraging the RL algorithm to empower eff…

cs.CL2025

Single LLM, Multiple Roles: A Unified Retrieval-Augmented Generation Framework Using Role-Specific Token Optimization

Yutao Zhu, Jiajie Jin, Hongjin Qian +3

Existing studies have optimized retrieval-augmented generation (RAG) across various sub-tasks, such as query understanding and retrieval refinement, but integrating these optimizat…

cs.CL2025

Scent of Knowledge: Optimizing Search-Enhanced Reasoning with Information Foraging

Hongjin Qian, Zheng Liu

Augmenting large language models (LLMs) with external retrieval has become a standard method to address their inherent knowledge cutoff limitations. However, traditional retrieval-…

cs.CL2025

WebThinker: Empowering Large Reasoning Models with Deep Research Capability

Xiaoxi Li, Jiajie Jin, Guanting Dong +5

Large reasoning models (LRMs), such as OpenAI-o1 and DeepSeek-R1, demonstrate impressive long-horizon reasoning capabilities. However, their reliance on static internal knowledge l…

cs.CV2025

Memory-enhanced Retrieval Augmentation for Long Video Understanding

Huaying Yuan, Zheng Liu, Minghao Qin +5

Efficient long-video understanding~(LVU) remains a challenging task in computer vision. Current long-context vision-language models~(LVLMs) suffer from information loss due to comp…

cs.CL2025

Does RAG Really Perform Bad For Long-Context Processing?

Kun Luo, Zheng Liu, Peitian Zhang +3

The efficient processing of long context poses a serious challenge for large language models (LLMs). Recently, retrieval-augmented generation (RAG) has emerged as a promising strat…

cs.IR2025

HawkBench: Investigating Resilience of RAG Methods on Stratified Information-Seeking Tasks

Hongjin Qian, Zheng Liu, Chao Gao +3

In real-world information-seeking scenarios, users have dynamic and diverse needs, requiring RAG systems to demonstrate adaptable resilience. To comprehensively evaluate the resili…

cs.CL2024

Boosting Long-Context Management via Query-Guided Activation Refilling

Hongjin Qian, Zheng Liu, Peitian Zhang +2

Processing long contexts poses a significant challenge for large language models (LLMs) due to their inherent context-window limitations and the computational burden of extensive k…

cs.IR2024★ 2 cited

CORAL: Benchmarking Multi-turn Conversational Retrieval-Augmentation Generation

Yiruo Cheng, Kelong Mao, Ziliang Zhao +6

Retrieval-Augmented Generation (RAG) has become a powerful paradigm for enhancing large language models (LLMs) through external knowledge retrieval. Despite its widespread attentio…

cs.CL2024★ 3 cited

A Survey of Conversational Search

Fengran Mo, Kelong Mao, Ziliang Zhao +7

As a cornerstone of modern information access, search engines have become indispensable in everyday life. With the rapid advancements in AI and natural language processing (NLP) te…

cs.LG2024

Theoretical Insights into Fine-Tuning Attention Mechanism: Generalization and Optimization

Xinhao Yao, Hongjin Qian, Xiaolin Hu +5

Large Language Models (LLMs), built on Transformer architectures, exhibit remarkable generalization across a wide range of tasks. However, fine-tuning these models for specific tas…

cs.IR2024★ 16 cited

Trustworthiness in Retrieval-Augmented Generation Systems: A Survey

Yujia Zhou, Wenbo Zhang, Jingying Shao +10

Retrieval-Augmented Generation (RAG) has quickly grown into a pivotal paradigm in the development of Large Language Models (LLMs). Although existing research mainly emphasizes accu…

cs.CL2024★ 5 cited

MemoRAG: Boosting Long Context Processing with Global Memory-Enhanced Retrieval Augmentation

Hongjin Qian, Zheng Liu, Peitian Zhang +4

Processing long contexts presents a significant challenge for large language models (LLMs). While recent advancements allow LLMs to handle much longer contexts than before (e.g., 3…

cs.CL2024★ 3 cited

Are Long-LLMs A Necessity For Long-Context Tasks?

Hongjin Qian, Zheng Liu, Peitian Zhang +4

The learning and deployment of long-LLMs remains a challenging problem despite recent progresses. In this work, we argue that the long-LLMs are not a necessity to solve long-contex…

cs.CL2024★ 4 cited

Extending Llama-3's Context Ten-Fold Overnight

Peitian Zhang, Ninglu Shao, Zheng Liu +4

We extend the context length of Llama-3-8B-Instruct from 8K to 80K via QLoRA fine-tuning. The entire training cycle is super efficient, which takes 8 hours on one 8xA800 (80G) GPU…

cs.CL2024★ 1 cited

Grounding Language Model with Chunking-Free In-Context Retrieval

Hongjin Qian, Zheng Liu, Kelong Mao +2

This paper presents a novel Chunking-Free In-Context (CFIC) retrieval approach, specifically tailored for Retrieval-Augmented Generation (RAG) systems. Traditional RAG systems ofte…

cs.CL2023

Optimizing Factual Accuracy in Text Generation through Dynamic Knowledge Selection

Hongjin Qian, Zhicheng Dou, Jiejun Tan +6

Language models (LMs) have revolutionized the way we interact with information, but they often generate nonfactual text, raising concerns about their reliability. Previous methods…

cs.CL2023★ 6 cited

WebBrain: Learning to Generate Factually Correct Articles for Queries by Grounding on Large Web Corpus

Hongjing Qian, Yutao Zhu, Zhicheng Dou +7

In this paper, we introduce a new NLP task -- generating short factual articles with references for queries by mining supporting evidence from the Web. In this task, called WebBrai…

cs.IR2023★ 5 cited

Large Language Models Know Your Contextual Search Intent: A Prompting Framework for Conversational Search

Kelong Mao, Zhicheng Dou, Fengran Mo +3

Precisely understanding users' contextual search intent has been an important challenge for conversational search. As conversational search sessions are much more diverse and long-…

cs.CL2022★ 1 cited

Less is More: Learning to Refine Dialogue History for Personalized Dialogue Generation

Hanxun Zhong, Zhicheng Dou, Yutao Zhu +2

Personalized dialogue systems explore the problem of generating responses that are consistent with the user's personality, which has raised much attention in recent years. Existing…

cs.IR2021★ 22 cited

Learning Implicit User Profiles for Personalized Retrieval-Based Chatbot

Hongjin Qian, Zhicheng Dou, Yutao Zhu +2

In this paper, we explore the problem of developing personalized chatbots. A personalized chatbot is designed as a digital chatting assistant for a user. The key characteristic of…

cs.CL2020

Pchatbot: A Large-Scale Dataset for Personalized Chatbot

Hongjin Qian, Xiaohe Li, Hanxun Zhong +6

Natural language dialogue systems raise great attention recently. As many dialogue models are data-driven, high-quality datasets are essential to these systems. In this paper, we i…