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Recommender systems have seen significant advancements with the influence of deep learning and graph neural networks, particularly in capturing complex user-item relationships. However, these graph-based recommenders heavily depend on…

Information Retrieval · Computer Science 2024-12-12 Xubin Ren , Wei Wei , Lianghao Xia , Lixin Su , Suqi Cheng , Junfeng Wang , Dawei Yin , Chao Huang

Large Language Models (LLMs) have demonstrated unprecedented language understanding and reasoning capabilities to capture diverse user preferences and advance personalized recommendations. Despite the growing interest in LLM-based…

Information Retrieval · Computer Science 2025-04-30 Zihuai Zhao , Wenqi Fan , Yao Wu , Qing Li

As e-commerce platforms expand their product catalogs, accurately recommending long-tail items becomes increasingly important for enhancing both user experience and platform revenue. A key challenge is the long-tail problem, where extreme…

Information Retrieval · Computer Science 2025-06-10 Qingyi Lu , Haotian Lyu , Jiayun Zheng , Yang Wang , Li Zhang , Chengrui Zhou

Recent advances in Large Language Models (LLMs) have shifted in recommendation systems from the discriminative paradigm to the LLM-based generative paradigm, where the recommender autoregressively generates sequences of semantic identifiers…

Information Retrieval · Computer Science 2026-03-03 Jiawei Feng , Xiaoyu Kong , Leheng Sheng , Bin Wu , Chao Yi , Feifang Yang , Xiang-Rong Sheng , Han Zhu , Xiang Wang , Jiancan Wu , Xiangnan He

Large-language Models (LLMs) have been extremely successful at tasks like complex dialogue understanding, reasoning and coding due to their emergent abilities. These emergent abilities have been extended with multi-modality to include…

Information Retrieval · Computer Science 2025-05-19 Li Yang , Anushya Subbiah , Hardik Patel , Judith Yue Li , Yanwei Song , Reza Mirghaderi , Vikram Aggarwal , Qifan Wang

Large language models provide rich semantic priors and strong reasoning capabilities, making them promising auxiliary signals for recommendation. However, prevailing approaches either deploy LLMs as standalone recommender or apply global…

Information Retrieval · Computer Science 2025-12-29 Shanglin Yang , Zhan Shi

Text-based recommendation holds a wide range of practical applications due to its versatility, as textual descriptions can represent nearly any type of item. However, directly employing the original item descriptions may not yield optimal…

Computation and Language · Computer Science 2024-04-03 Hanjia Lyu , Song Jiang , Hanqing Zeng , Yinglong Xia , Qifan Wang , Si Zhang , Ren Chen , Christopher Leung , Jiajie Tang , Jiebo Luo

Recommender systems are essential for guiding users through the vast and diverse landscape of digital content by delivering personalized and relevant suggestions. However, improving both personalization and interpretability remains a…

Information Retrieval · Computer Science 2025-08-05 Danial Ebrat , Tina Aminian , Sepideh Ahmadian , Luis Rueda

Personalized food recommendation systems (Food-RecSys) critically underperform due to fragmented component understanding and the failure of conventional machine learning with vast, imbalanced food data. While Large Language Models (LLMs)…

Information Retrieval · Computer Science 2025-04-30 Ali Rostami

Retrieval and recommendation are two essential tasks in modern search tools. This paper introduces a novel retrieval-reranking framework leveraging Large Language Models (LLMs) to enhance the spatiotemporal and semantic associated mining…

Information Retrieval · Computer Science 2024-11-21 Yuanyuan Tian , Wenwen Li , Lei Hu , Xiao Chen , Michael Brook , Michael Brubaker , Fan Zhang , Anna K. Liljedahl

The importance of recommender systems is growing rapidly due to the exponential increase in the volume of content generated daily. This surge in content presents unique challenges for designing effective recommender systems. Key among these…

Computation and Language · Computer Science 2025-06-12 Jiahao Tian , Jinman Zhao , Zhenkai Wang , Zhicheng Ding

Semantic object parsing is a fundamental task for understanding objects in detail in computer vision community, where incorporating multi-level contextual information is critical for achieving such fine-grained pixel-level recognition.…

Computer Vision and Pattern Recognition · Computer Science 2015-11-17 Xiaodan Liang , Xiaohui Shen , Donglai Xiang , Jiashi Feng , Liang Lin , Shuicheng Yan

Most recommender systems treat timestamps as numeric or cyclical values, overlooking real-world context such as holidays, events, and seasonal patterns. We propose a scalable framework that uses large language models (LLMs) to generate…

Information Retrieval · Computer Science 2025-10-29 Yejin Kim , Shaghayegh Agah , Mayur Nankani , Neeraj Sharma , Feifei Peng , Maria Peifer , Sardar Hamidian , H Howie Huang

Recommender systems are crucial for personalizing user experiences but often depend on implicit feedback data, which can be noisy and misleading. Existing denoising studies involve incorporating auxiliary information or learning strategies…

Information Retrieval · Computer Science 2025-02-14 Shuyao Wang , Zhi Zheng , Yongduo Sui , Hui Xiong

Large language models (LLMs) have achieved remarkable performance on diverse benchmarks, yet existing evaluation practices largely rely on coarse summary metrics that obscure underlying reasoning abilities. In this work, we propose novel…

Methodology · Statistics 2026-03-17 Jia Liu , Zhiyu Xu , Yuqi Gu

Sequential Recommendation (SR) learns user preferences from their historical interaction sequences and provides personalized suggestions. In real-world scenarios, most items exhibit sparse interactions, known as the tail-item problem. This…

Information Retrieval · Computer Science 2026-04-07 Zhifu Wei , Yizhou Dang , Guibing Guo , Chuang Zhao , Zhu Sun

Large Language Models (LLMs) pose a new paradigm of modeling and computation for information tasks. Recommendation systems are a critical application domain poised to benefit significantly from the sequence modeling capabilities and world…

Large language model (LLM)-based recommender systems have achieved high-quality performance by bridging the discrepancy between the item space and the language space through item tokenization. However, existing item tokenization methods…

Information Retrieval · Computer Science 2025-11-18 Yu Hou , Won-Yong Shin

Natural Language Recommendation (NLRec) generates item suggestions based on the relevance between user-issued NL requests and NL item description passages. Existing NLRec approaches often use Dense Retrieval (DR) to compute item relevance…

Information Retrieval · Computer Science 2025-11-04 Yifan Liu , Qianfeng Wen , Jiazhou Liang , Mark Zhao , Justin Cui , Anton Korikov , Armin Toroghi , Junyoung Kim , Scott Sanner

Generative recommendation with large language models (LLMs) reframes prediction as sequence generation, yet existing LLM-based recommenders remain limited in leveraging geographic signals that are crucial in mobility and local-services…

Artificial Intelligence · Computer Science 2026-04-22 Dongyi Lv , Qiuyu Ding , Heng-Da Xu , Zhaoxu Sun , Zhi Wang , Feng Xiong , Mu Xu