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Personalizing language models by effectively incorporating user interaction history remains a central challenge in the development of adaptive AI systems. While large language models (LLMs), combined with Retrieval-Augmented Generation…

Computation and Language · Computer Science 2026-04-14 Mikhail Menschikov , Dmitry Evseev , Victoria Dochkina , Ruslan Kostoev , Ilia Perepechkin , Petr Anokhin , Nikita Semenov , Evgeny Burnaev

Iterative retrieval-augmented generation (iRAG) models offer an effective approach for multi-hop question answering (QA). However, their retrieval process faces two key challenges: (1) it can be disrupted by irrelevant documents or…

Computation and Language · Computer Science 2025-02-26 Jinyuan Fang , Zaiqiao Meng , Craig Macdonald

Large Language Models (LLMs) are being adopted at an unprecedented rate, yet still face challenges in knowledge-intensive domains like biomedicine. Solutions such as pre-training and domain-specific fine-tuning add substantial computational…

In modern digital marketing, the growing complexity of advertisement data demands intelligent systems capable of understanding semantic relationships among products, audiences, and advertising content. To address this challenge, this paper…

Information Retrieval · Computer Science 2026-01-06 Tangtang Wang , Kaijie Zhang , Kuangcong Liu

The integration of Large Language Models (LLMs) with Retrieval-Augmented Generation (RAG) has significantly advanced Knowledge Graph Question Answering (KGQA). However, existing LLM-driven KGQA systems act as stateless planners, generating…

Databases · Computer Science 2026-04-30 Yushi Sun , Lei Chen

Large Language Models (LLMs) often struggle with dynamically changing knowledge and handling unknown static information. Retrieval-Augmented Generation (RAG) is employed to tackle these challenges and has a significant impact on improving…

Computation and Language · Computer Science 2025-09-18 Zhen Zhang , Xinyu Wang , Yong Jiang , Zile Qiao , Zhuo Chen , Guangyu Li , Feiteng Mu , Mengting Hu , Pengjun Xie , Fei Huang

Recently, Large Language Models (LLMs) have been increasingly used to support various decision-making tasks, assisting humans in making informed decisions. However, when LLMs confidently provide incorrect information, it can lead humans to…

Information Retrieval · Computer Science 2025-10-16 Chaeyun Jang , Deukhwan Cho , Seanie Lee , Hyungi Lee , Juho Lee

Interactive recommendation aims to learn from dynamic interactions between items and users to achieve responsiveness and accuracy. Reinforcement learning is inherently advantageous for coping with dynamic environments and thus has attracted…

Information Retrieval · Computer Science 2020-12-02 Xiaocong Chen , Chaoran Huang , Lina Yao , Xianzhi Wang , Wei Liu , Wenjie Zhang

Cold-start recommendation remains a central challenge in dynamic, open-world platforms, requiring models to recommend for newly registered users (user cold-start) and to recommend newly introduced items to existing users (item cold-start)…

Information Retrieval · Computer Science 2026-04-07 Zhen Zhang , Jujia Zhao , Xinyu Ma , Xin Xin , Maarten de Rijke , Zhaochun Ren

Retrieval-Augmented Generation (RAG) struggles on long, structured financial filings where relevant evidence is sparse and cross-referenced. This paper presents a systematic investigation of advanced metadata-driven Retrieval-Augmented…

Information Retrieval · Computer Science 2025-10-29 Michail Dadopoulos , Anestis Ladas , Stratos Moschidis , Ioannis Negkakis

This paper studies recommender systems with knowledge graphs, which can effectively address the problems of data sparsity and cold start. Recently, a variety of methods have been developed for this problem, which generally try to learn…

Information Retrieval · Computer Science 2022-01-10 Weiping Song , Zhijian Duan , Ziqing Yang , Hao Zhu , Ming Zhang , Jian Tang

The task of multi-hop link prediction within knowledge graphs (KGs) stands as a challenge in the field of knowledge graph analysis, as it requires the model to reason through and understand all intermediate connections before making a…

Computation and Language · Computer Science 2025-06-17 Dong Shu , Tianle Chen , Mingyu Jin , Chong Zhang , Mengnan Du , Yongfeng Zhang

Retrieval-augmented generation with tool-calling agents (agentic RAG) has become increasingly powerful in understanding, processing, and responding to user queries. However, the scope of the grounding knowledge is limited and asking…

Computation and Language · Computer Science 2026-01-14 Fabian Spaeh , Tianyi Chen , Chen-Hao Chiang , Bin Shen

GraphRAG enhances large language models (LLMs) to generate quality answers for user questions by retrieving related facts from external knowledge graphs. However, current GraphRAG methods are primarily evaluated on and overly tailored for…

Machine Learning · Computer Science 2025-11-04 Renjie Liu , Haitian Jiang , Xiao Yan , Bo Tang , Jinyang Li

The lack of training data gives rise to the system cold-start problem in recommendation systems, making them struggle to provide effective recommendations. To address this problem, Large Language Models (LLMs) can model recommendation tasks…

Information Retrieval · Computer Science 2024-12-25 Wenlin Zhang , Chuhan Wu , Xiangyang Li , Yuhao Wang , Kuicai Dong , Yichao Wang , Xinyi Dai , Xiangyu Zhao , Huifeng Guo , Ruiming Tang

Large language models (LLMs) inevitably exhibit hallucinations since the accuracy of generated texts cannot be secured solely by the parametric knowledge they encapsulate. Although retrieval-augmented generation (RAG) is a practicable…

Computation and Language · Computer Science 2024-10-08 Shi-Qi Yan , Jia-Chen Gu , Yun Zhu , Zhen-Hua Ling

Retrieval-augmented generation (RAG) systems have been widely adopted in contemporary large language models (LLMs) due to their ability to improve generation quality while reducing the required input context length. In this work, we focus…

Computation and Language · Computer Science 2026-04-07 Tianyi Zhang , Andreas Marfurt

Large Language Models (LLMs) excel at language understanding but remain limited in knowledge-intensive domains due to hallucinations, outdated information, and limited explainability. Text-based retrieval-augmented generation (RAG) helps…

Computation and Language · Computer Science 2026-02-09 Larissa Pusch , Alexandre Courtiol , Tim Conrad

Reranker improves retrieval performance by capturing document interactions. At one extreme, graph-aware adaptive retrieval (GAR) represents an information-rich regime, requiring a pre-computed document similarity graph in reranking.…

Information Retrieval · Computer Science 2025-12-23 Soyoung Yoon , Jongho Kim , Daeyong Kwon , Avishek Anand , Seung-won Hwang

The deployment of Large Language Models (LLMs) in recommender systems for predicting Click-Through Rates (CTR) necessitates a delicate balance between computational efficiency and predictive accuracy. This paper presents an optimization…