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Complementary recommendations suggest combinations of useful items that play important roles in e-commerce. However, complementary relationships are often subjective and vary among individuals, making them difficult to infer from historical…

Information Retrieval · Computer Science 2025-10-10 Madoka Hagiri , Kazushi Okamoto , Koki Karube , Kei Harada , Atsushi Shibata

Recently, large language models (LLMs) have shown great potential in recommender systems, either improving existing recommendation models or serving as the backbone. However, there exists a large semantic gap between LLMs and recommender…

Information Retrieval · Computer Science 2024-04-22 Bowen Zheng , Yupeng Hou , Hongyu Lu , Yu Chen , Wayne Xin Zhao , Ming Chen , Ji-Rong Wen

Multimodal learning plays a critical role in e-commerce recommendation platforms today, enabling accurate recommendations and product understanding. However, existing vision-language models, such as CLIP, face key challenges in e-commerce…

Information Retrieval · Computer Science 2025-07-24 Ramin Giahi , Kehui Yao , Sriram Kollipara , Kai Zhao , Vahid Mirjalili , Jianpeng Xu , Topojoy Biswas , Evren Korpeoglu , Kannan Achan

Cross-Domain Sequential Recommendation (CDSR) plays a crucial role in modern consumer electronics and e-commerce platforms, where users interact with diverse services such as books, movies, and online retail products. These systems must…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Wangyu Wu , Xuhang Chen , Zhenhong Chen , Jing-En Jiang , Kim-Fung Tsang , Xiaowei Huang , Fei Ma , Jimin Xiao

On large-scale e-commerce platforms with tens of millions of active monthly users, recommending visually similar products is essential for enabling users to efficiently discover items that align with their preferences. This study presents…

Information Retrieval · Computer Science 2025-10-16 Yuki Yada , Sho Akiyama , Ryo Watanabe , Yuta Ueno , Yusuke Shido , Andre Rusli

This paper explores the use of Large Language Models (LLMs) for sequential recommendation, which predicts users' future interactions based on their past behavior. We introduce a new concept, "Integrating Recommendation Systems as a New…

Information Retrieval · Computer Science 2024-12-24 Kai Zheng , Qingfeng Sun , Can Xu , Peng Yu , Qingwei Guo

Large language models (LLMs) have recently been used as backbones for recommender systems. However, their performance often lags behind conventional methods in standard tasks like retrieval. We attribute this to a mismatch between LLMs'…

Information Retrieval · Computer Science 2024-04-02 Yuwei Cao , Nikhil Mehta , Xinyang Yi , Raghunandan Keshavan , Lukasz Heldt , Lichan Hong , Ed H. Chi , Maheswaran Sathiamoorthy

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…

Evaluating production-level retrieval systems at scale is a crucial yet challenging task due to the limited availability of a large pool of well-trained human annotators. Large Language Models (LLMs) have the potential to address this…

Information Retrieval · Computer Science 2024-09-19 Kasra Hosseini , Thomas Kober , Josip Krapac , Roland Vollgraf , Weiwei Cheng , Ana Peleteiro Ramallo

The reasoning and generalization capabilities of LLMs can help us better understand user preferences and item characteristics, offering exciting prospects to enhance recommendation systems. Though effective while user-item interactions are…

Information Retrieval · Computer Science 2024-02-20 Jianling Wang , Haokai Lu , James Caverlee , Ed Chi , Minmin Chen

Click-Through Rate (CTR) prediction is crucial for Recommendation System(RS), aiming to provide personalized recommendation services for users in many aspects such as food delivery, e-commerce and so on. However, traditional RS relies on…

Information Retrieval · Computer Science 2024-08-22 Zhizhong Wan , Bin Yin , Junjie Xie , Fei Jiang , Xiang Li , Wei Lin

In the dynamic field of eCommerce, the quality and comprehensiveness of product descriptions are pivotal for enhancing search visibility and customer engagement. Effective product descriptions can address the 'cold start' problem, align…

Computation and Language · Computer Science 2023-10-31 Jianghong Zhou , Bo Liu , Jhalak Nilesh Acharya Yao Hong , Kuang-chih Lee , Musen Wen

Interactive recommender systems can dynamically adapt to user feedback, but often suffer from content homogeneity and filter bubble effects due to overfitting short-term user preferences. While recent efforts aim to improve content…

Information Retrieval · Computer Science 2026-05-12 Chongjun Xia , Yanchun Peng , Xianzhi Wang

Large language models (LLMs) are increasingly being integrated into search engines to provide natural language responses tailored to user queries. Customers and end-users are also becoming more dependent on these models for quick and easy…

Information Retrieval · Computer Science 2024-09-04 Aounon Kumar , Himabindu Lakkaraju

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

Product retrieval is the backbone of e-commerce search: for each user query, it identifies a high-recall candidate set from billions of items, laying the foundation for high-quality ranking and user experience. Despite extensive…

Information Retrieval · Computer Science 2026-04-28 Gui Ling , Weiyuan Li , Yue Jiang , Wenjun Peng , Xingxian Liu , Dongshuai Li , Fuyu Lv , Dan Ou , Haihong Tang

Sequential recommender systems predict items that may interest users by modeling their preferences based on historical interactions. Traditional sequential recommendation methods rely on capturing implicit collaborative filtering signals…

Information Retrieval · Computer Science 2024-03-28 Shenghao Yang , Weizhi Ma , Peijie Sun , Qingyao Ai , Yiqun Liu , Mingchen Cai , Min Zhang

Feature engineering has long been central to recommender systems, yet effectively leveraging textual item features remains challenging. Recent advances in large language models (LLMs) have enabled their use as semantic encoders for…

Information Retrieval · Computer Science 2026-04-21 Yupeng Hou , Jiacheng Li , Xiangjun Fu , Zhankui He , An Yan , Xiusi Chen , Julian McAuley

Sequential recommendation aims to predict users' future interactions by modeling collaborative filtering (CF) signals from historical behaviors of similar users or items. Traditional sequential recommenders predominantly rely on ID-based…

Information Retrieval · Computer Science 2025-06-30 Yingzhi He , Xiaohao Liu , An Zhang , Yunshan Ma , Tat-Seng Chua

Pretrained Language Models (PLM) have been greatly successful on a board range of natural language processing (NLP) tasks. However, it has just started being applied to the domain of recommendation systems. Traditional recommendation…

Machine Learning · Computer Science 2023-02-10 Nuofan Xu , Chenhui Hu