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In many recommender systems, users and items are associated with attributes, and users show preferences to items. The attribute information describes users'(items') characteristics and has a wide range of applications, such as user…

Information Retrieval · Computer Science 2020-05-26 Le Wu , Yonghui Yang , Kun Zhang , Richang Hong , Yanjie Fu , Meng Wang

We introduce Activity Graph Transformer, an end-to-end learnable model for temporal action localization, that receives a video as input and directly predicts a set of action instances that appear in the video. Detecting and localizing…

Computer Vision and Pattern Recognition · Computer Science 2021-01-29 Megha Nawhal , Greg Mori

Generative Recommendation has revolutionized recommender systems by reformulating retrieval as a sequence generation task over discrete item identifiers. Despite the progress, existing approaches typically rely on static, decoupled…

Information Retrieval · Computer Science 2026-02-10 Huanjie Wang , Xinchen Luo , Honghui Bao , Zhang Zixing , Lejian Ren , Yunfan Wu , Hongwei Zhang , Liwei Guan , Guang Chen

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

Recent advances in LLM-based recommendation have shown promise, yet their cross-domain generalization is hindered by a fundamental mismatch between language-centric pretraining and the recommendation task. Existing methods, relying on…

Information Retrieval · Computer Science 2025-09-04 Sashuai Zhou , Weinan Gan , Qijiong Liu , Ke Lei , Jieming Zhu , Hai Huang , Yan Xia , Ruiming Tang , Zhenhua Dong , Zhou Zhao

Semantic ID-based generative recommendation represents items as sequences of discrete tokens, but it inherently faces a trade-off between representational expressiveness and computational efficiency. Residual Quantization (RQ)-based…

Information Retrieval · Computer Science 2026-02-17 Ming Xia , Zhiqin Zhou , Guoxin Ma , Dongmin Huang

In past years, the OpenAI's Scaling-Laws shows the amazing intelligence with the next-token prediction paradigm in neural language modeling, which pointing out a free-lunch way to enhance the model performance by scaling the model…

Information Retrieval · Computer Science 2025-12-09 Jiangxia Cao , Shuo Yang , Zijun Wang , Qinghai Tan

Sequential recommendation aims at understanding user preference by capturing successive behavior correlations, which are usually represented as the item purchasing sequences based on their past interactions. Existing efforts generally…

Information Retrieval · Computer Science 2024-01-23 Yifang Qin , Wei Ju , Hongjun Wu , Xiao Luo , Ming Zhang

Relevance search is to find top-ranked entities in a knowledge graph (KG) that are relevant to a query entity. Relevance is ambiguous, particularly over a schema-rich KG like DBpedia which supports a wide range of different semantics of…

Information Retrieval · Computer Science 2019-10-14 Tianshuo Zhou , Ziyang Li , Gong Cheng , Jun Wang , Yu'Ang Wei

The main challenge of Temporal Action Localization is to retrieve subtle human actions from various co-occurring ingredients, e.g., context and background, in an untrimmed video. While prior approaches have achieved substantial progress…

Computer Vision and Pattern Recognition · Computer Science 2022-06-24 Kun Xia , Le Wang , Sanping Zhou , Nanning Zheng , Wei Tang

Anticipating actions before they occur is a core challenge in action understanding research. While conventional methods rely on extracting and aggregating temporal information from videos, as humans we can often predict upcoming actions by…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Manuel Benavent-Lledo , Konstantinos Bacharidis , Victoria Manousaki , Konstantinos Papoutsakis , Antonis Argyros , Jose Garcia-Rodriguez

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

Data generation is a data augmentation technique for enhancing the generalization ability for skeleton-based human action recognition. Most existing data generation methods face challenges to ensure the temporal consistency of the dynamic…

Computer Vision and Pattern Recognition · Computer Science 2024-01-31 Long Liu , Xin Wang , Fangming Li , Jiayu Chen

In the field of Recommender Systems (RS), neural collaborative filtering represents a significant milestone by combining matrix factorization and deep neural networks to achieve promising results. Traditional methods like matrix…

Information Retrieval · Computer Science 2025-06-04 Saloua Zammali , Siddhant Dutta , Sadok Ben Yahia

Generating video stories from text prompts is a complex task. In addition to having high visual quality, videos need to realistically adhere to a sequence of text prompts whilst being consistent throughout the frames. Creating a benchmark…

Generative recommendation models can model user behavior as sequences of events and provide a shared backbone for multiple recommendation tasks. In production, however, pre-training gains do not automatically translate into downstream…

Information Retrieval · Computer Science 2026-05-25 Qiuling Xu , Ko-Jen Hsiao , Moumita Bhattacharya

Temporally localizing actions in a video is a fundamental challenge in video understanding. Most existing approaches have often drawn inspiration from image object detection and extended the advances, e.g., SSD and Faster R-CNN, to produce…

Computer Vision and Pattern Recognition · Computer Science 2019-09-10 Fuchen Long , Ting Yao , Zhaofan Qiu , Xinmei Tian , Jiebo Luo , Tao Mei

Graph kernels are usually defined in terms of simpler kernels over local substructures of the original graphs. Different kernels consider different types of substructures. However, in some cases they have similar predictive performances,…

Machine Learning · Computer Science 2016-07-22 Nicolò Navarin , Alessandro Sperduti , Riccardo Tesselli

Recommender systems aim to enhance the overall user experience by providing tailored recommendations for a variety of products and services. These systems help users make more informed decisions, leading to greater user engagement with the…

Information Retrieval · Computer Science 2024-02-20 Adamya Shyam , Vikas Kumar , Venkateswara Rao Kagita , Arun K Pujari

Current datasets for action recognition tasks face limitations stemming from traditional collection and generation methods, including the constrained range of action classes, absence of multi-viewpoint recordings, limited diversity, poor…

Computer Vision and Pattern Recognition · Computer Science 2024-01-25 Xingyu Song , Zhan Li , Shi Chen , Kazuyuki Demachi
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