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Recent advances in Large Language Models (LLMs) have opened new possibilities for recommendation systems, though current approaches such as TALLRec face challenges in explainability and cold-start scenarios. We present ExplainRec, a…

Information Retrieval · Computer Science 2025-11-20 Bo Ma , LuYao Liu , ZeHua Hu , Simon Lau

Memory-augmented LLM agents have advanced personalized recommendation, yet existing approaches universally adopt flat memory representations that conflate ephemeral signals with stable preferences, and none provides a complete lifecycle…

Computation and Language · Computer Science 2026-05-18 Xiang Shen , Yuhang Zhou , Yifan Wu , Zhuokai Zhao , Siyu Lin , Lei Huang , Qianqian Zhong , Lizhu Zhang , Benyu Zhang , Xiangjun Fan , Hong Yan

Data preparation, which aims to transform heterogeneous and noisy raw tables into analysis-ready data, remains a major bottleneck in data science. Recent approaches leverage large language models (LLMs) to automate data preparation from…

Databases · Computer Science 2026-02-10 Meihao Fan , Ju Fan , Yuxin Zhang , Shaolei Zhang , Xiaoyong Du , Jie Song , Peng Li , Fuxin Jiang , Tieying Zhang , Jianjun Chen

Large Language Models (LLMs) have demonstrated a remarkable capacity in understanding user preferences for recommendation systems. However, they are constrained by several critical challenges, including their inherent "Black-Box"…

Artificial Intelligence · Computer Science 2026-01-01 Jiaxin Hu , Tao Wang , Bingsan Yang , Hongrun Wang

Multi-agent systems must decide which agent is the most appropriate for a given task. We propose a novel architecture for recommending which LLM agent out of many should perform a task given a natural language prompt by extending the…

Machine Learning · Computer Science 2025-01-24 Joshua Park , Yongfeng Zhang

Modern recommender systems increasingly leverage large language models (LLMs) for reranking to improve personalization. However, existing approaches face two key limitations: (1) heavy reliance on manually crafted prompts that are difficult…

Information Retrieval · Computer Science 2025-04-08 Chen Wang , Mingdai Yang , Zhiwei Liu , Pan Li , Linsey Pang , Qingsong Wen , Philip Yu

Deep neural networks (DNN) have achieved great success in the recommender systems (RS) domain. However, to achieve remarkable performance, DNN-based recommender models often require numerous parameters, which inevitably bring redundant…

Information Retrieval · Computer Science 2021-12-03 Yang Sun , Fajie Yuan , Min Yang , Alexandros Karatzoglou , Shen Li , Xiaoyan Zhao

Traditional recommendation systems suffer from inconsistency in multi-stage optimization objectives. Generative Recommendation (GR) mitigates them through an end-to-end framework; however, existing methods still rely on matching mechanisms…

We present $\textbf{Research Math Agents (RMA)}$, an agentic framework for automated reasoning on research-level mathematical problems. Unlike prior studies centered on competition mathematics or formal theorem proving, RMA targets…

Artificial Intelligence · Computer Science 2026-05-25 Zelin Zhao , Bo Yuan , Jaemoo Choi , Yongxin Chen

Recommender systems are essential components of many online platforms, yet traditional approaches still struggle with understanding complex user preferences and providing explainable recommendations. The emergence of Large Language Model…

Information Retrieval · Computer Science 2025-03-05 Qiyao Peng , Hongtao Liu , Hua Huang , Qing Yang , Minglai Shao

Item recommendation is a personalized ranking task. To this end, many recommender systems optimize models with pairwise ranking objectives, such as the Bayesian Personalized Ranking (BPR). Using matrix Factorization (MF) --- the most widely…

Information Retrieval · Computer Science 2018-08-20 Xiangnan He , Zhankui He , Xiaoyu Du , Tat-Seng Chua

Generative recommendation systems have gained increasing attention as an innovative approach that directly generates item identifiers for recommendation tasks. Despite their potential, a major challenge is the effective construction of item…

Information Retrieval · Computer Science 2025-06-05 Enze Liu , Bowen Zheng , Cheng Ling , Lantao Hu , Han Li , Wayne Xin Zhao

Agentic systems are becoming more capable: agents define strategies, take actions, and interact with different environments. This autonomy poses serious challenges for overseeing and assessing agent behavior. Most current tools are limited,…

Computation and Language · Computer Science 2026-05-22 Asaf Yehudai , Lilach Eden , Michal Shmueli-Scheuer

The advent of large language models (LLMs) has transformed information access and reasoning through open-ended natural language interaction. However, LLMs remain limited by static knowledge, factual hallucinations, and the inability to…

Artificial Intelligence · Computer Science 2025-10-29 Minhua Lin , Zongyu Wu , Zhichao Xu , Hui Liu , Xianfeng Tang , Qi He , Charu Aggarwal , Hui Liu , Xiang Zhang , Suhang Wang

Configuring LLM-based agent systems involves choosing workflows, tools, token budgets, and prompts from a large combinatorial design space, and is typically handled today by fixed templates or hand-tuned heuristics that apply the same…

Artificial Intelligence · Computer Science 2026-05-22 Aditya Taparia , Som Sagar , Ransalu Senanayake

Route recommendation systems commonly adopt a multi-stage pipeline involving fine-ranking and re-ranking to produce high-quality ordered recommendations. However, this paradigm faces three critical limitations. First, there is a…

Information Retrieval · Computer Science 2026-05-11 Chao Chen , Longfei Xu , Daohan Su , Tengfei Liu , Hanyu Guo , Yihai Duan , Kaikui Liu , Xiangxiang Chu

Agentic RAG is a powerful technique for incorporating external information that LLMs lack, enabling better problem solving and question answering. However, suboptimal search behaviors exist widely, such as over-search (retrieving…

Computation and Language · Computer Science 2026-04-14 Peilin Wu , Mian Zhang , Kun Wan , Wentian Zhao , Kaiyu He , Xinya Du , Zhiyu Chen

AutoModel is an agent based architecture for the full lifecycle of industrial recommender systems. Instead of a fixed recall and ranking pipeline, AutoModel organizes recommendation as a set of interacting evolution agents with long term…

Information Retrieval · Computer Science 2026-04-10 Hao Zhang , Jinxin Hu , Hao Deng , Lingyu Mu , Shizhun Wang , Yu Zhang , Xiaoyi Zeng

State-of-the-art recommender system (RS) mostly rely on complex deep neural network (DNN) model structure, which makes it difficult to provide explanations along with RS decisions. Previous researchers have proved that providing…

Information Retrieval · Computer Science 2022-06-14 Zhichao Xu , Yi Han , Tao Yang , Anh Tran , Qingyao Ai

Multi-objective re-ranking has become a critical component of modern multi-stage recommender systems, as it tasked to balance multiple conflicting objectives such as accuracy, diversity, and fairness. Existing multi-objective re-ranking…

Information Retrieval · Computer Science 2026-03-24 Wei Zhou , Wuyang Li , Junkai Ji , Xueliang Li , Wenjing Hong , Zexuan Zhu , Xing Tang , Xiuqiang He