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Sequential recommendation aims to predict the next item based on user interests in historical interaction sequences. Historical interaction sequences often contain irrelevant noisy items, which significantly hinders the performance of…

Information Retrieval · Computer Science 2025-10-14 Liang Li , Zhou Yang , Xiaofei Zhu

Characterizing users' interests accurately plays a significant role in an effective recommender system. The sequential recommender system can learn powerful hidden representations of users from successive user-item interactions and dynamic…

Social and Information Networks · Computer Science 2020-11-24 Lingxiao Zhang , Jiangpeng Yan , Yujiu Yang , Xiu Li

Micro-videos platforms such as TikTok are extremely popular nowadays. One important feature is that users no longer select interested videos from a set, instead they either watch the recommended video or skip to the next one. As a result,…

Information Retrieval · Computer Science 2023-09-01 Yuhan Quan , Jingtao Ding , Chen Gao , Nian Li , Lingling Yi , Depeng Jin , Yong Li

Recommender systems predict personalized item rankings based on user preference distributions derived from historical behavior data. Recently, diffusion models (DMs) have gained attention in recommendation for their ability to model complex…

Information Retrieval · Computer Science 2025-04-22 Shuo Liu , An Zhang , Guoqing Hu , Hong Qian , Tat-seng Chua

Cross-Domain Sequential Recommendation (CDSR) leverages user behaviors across domains to enhance recommendation quality. However, naive aggregation of sequential signals can introduce conflicting domain-specific preferences, leading to…

Information Retrieval · Computer Science 2025-09-12 Xiaoxin Ye , Chengkai Huang , Hongtao Huang , Lina Yao

Multi-modal recommendation (MMR) enriches item representations by introducing item content, e.g., visual and textual descriptions, to improve upon interaction-only recommenders. The success of MMR hinges on aligning these content modalities…

Information Retrieval · Computer Science 2026-04-06 Jing Du , Zesheng Ye , Congbo Ma , Feng Liu , Flora. D. Salim

Graph neural networks (GNNs) have revolutionized recommender systems by effectively modeling complex user-item interactions, yet data sparsity and the item cold-start problem significantly impair performance, particularly for new items with…

Machine Learning · Computer Science 2026-03-04 Jialin Liu , Zhaorui Zhang , Ray C. C. Cheung

Recommender systems have long been built upon the modeling of interactions between users and items, while recent studies have sought to broaden this paradigm by generalizing to new users and items, incorporating diverse information sources,…

Information Retrieval · Computer Science 2025-10-28 Chanyoung Chung , Kyeongryul Lee , Sunbin Park , Joyce Jiyoung Whang

Although a variety of methods have been proposed for sequential recommendation, it is still far from being well solved partly due to two challenges. First, the existing methods often lack the simultaneous consideration of the global…

Information Retrieval · Computer Science 2022-08-10 Lihua Chen , Ning Yang , Philip S Yu

Diffusion transformers enable flexible generative modeling for video. However, it is still technically challenging and computationally expensive to generate high-resolution videos with rich semantics and complex motion. Similar to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-16 Xunnong Xu , Mengying Cao

Generative Retrieval (GR) offers a promising paradigm for recommendation through next-token prediction (NTP). However, scaling it to large-scale industrial systems introduces three challenges: (i) within a single request, the identical…

Information Retrieval · Computer Science 2026-04-17 Yanyan Zou , Junbo Qi , Lunsong Huang , Yu Li , Kewei Xu , Jiabao Gao , Binglei Zhao , Xuanhua Yang , Sulong Xu , Shengjie Li

To tackle cold-start and data sparsity issues in recommender systems, numerous multimodal, sequential, and contrastive techniques have been proposed. While these augmentations can boost recommendation performance, they tend to add noise and…

Information Retrieval · Computer Science 2026-02-10 Bucher Sahyouni , Matthew Vowels , Liqun Chen , Simon Hadfield

This article presents a novel approach to multimodal recommendation systems, focusing on integrating and purifying multimodal data. Our methodology starts by developing a filter to remove noise from various types of data, making the…

Information Retrieval · Computer Science 2024-05-30 Mert Burabak , Tevfik Aytekin

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

Creating high-fidelity, coherent long videos is a sought-after aspiration. While recent video diffusion models have shown promising potential, they still grapple with spatiotemporal inconsistencies and high computational resource demands.…

Computer Vision and Pattern Recognition · Computer Science 2025-01-13 Yongjia Ma , Junlin Chen , Donglin Di , Qi Xie , Lei Fan , Wei Chen , Xiaofei Gou , Na Zhao , Xun Yang

Sequential recommendation is one of the most important tasks in recommender systems, which aims to recommend the next interacted item with historical behaviors as input. Traditional sequential recommendation always mainly considers the…

Information Retrieval · Computer Science 2023-08-09 Yunzhu Pan , Chen Gao , Jianxin Chang , Yanan Niu , Yang Song , Kun Gai , Depeng Jin , Yong Li

Existing sequential recommendation models, even advanced diffusion-based approaches, often struggle to capture the rich semantic intent underlying user behavior, especially for new users or long-tail items. This limitation stems from their…

Information Retrieval · Computer Science 2026-01-08 Bo-Chian Chen , Manel Slokom

Sequential recommendation aims at identifying the next item that is preferred by a user based on their behavioral history. Compared to conventional sequential models that leverage attention mechanisms and RNNs, recent efforts mainly follow…

Information Retrieval · Computer Science 2022-05-04 Yu Tian , Jianxin Chang , Yannan Niu , Yang Song , Chenliang Li

Attribute-aware sequential recommendation entails predicting the next item a user will interact with based on a chronologically ordered history of past interactions, enriched with item attributes. Existing methods typically leverage…

Information Retrieval · Computer Science 2026-05-08 Shereen Elsayed , Ngoc Son Le , Ahmed Rashed , Lars Schmidt-Thieme

Multimodal recommendation has emerged as a promising solution to alleviate the cold-start and sparsity problems in collaborative filtering by incorporating rich content information, such as product images and textual descriptions. However,…

Information Retrieval · Computer Science 2025-06-03 Sibei Liu , Yuanzhe Zhang , Xiang Li , Yunbo Liu , Chengwei Feng , Hao Yang