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This paper introduces PAG-a novel optimization and decoding approach that guides autoregressive generation of document identifiers in generative retrieval models through simultaneous decoding. To this aim, PAG constructs a set-based and…

Information Retrieval · Computer Science 2024-04-24 Hansi Zeng , Chen Luo , Hamed Zamani

While diffusion models have achieved great success in generating continuous signals such as images and audio, it remains elusive for diffusion models in learning discrete sequence data like natural languages. Although recent advances…

Computation and Language · Computer Science 2024-05-02 Jiasheng Ye , Zaixiang Zheng , Yu Bao , Lihua Qian , Mingxuan Wang

Metric learning has attracted extensive interest for its ability to provide personalized recommendations based on the importance of observed user-item interactions. Current metric learning methods aim to push negative items away from the…

Information Retrieval · Computer Science 2025-12-24 Yan Zhang , Li Deng , Lixin Duan , Sami Azam

We present Generative Semantic Segmentation (GSS), a generative learning approach for semantic segmentation. Uniquely, we cast semantic segmentation as an image-conditioned mask generation problem. This is achieved by replacing the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-11 Jiaqi Chen , Jiachen Lu , Xiatian Zhu , Li Zhang

Generative recommendation (GenRec) offers LLM integration, reduced embedding costs, and eliminates per-candidate scoring, attracting great attention. Despite its promising performance, this study reveals that it suffers from generation…

Information Retrieval · Computer Science 2025-07-08 Kun Yang , Siyao Zheng , Tianyi Li , Xiaodong Li , Hui Li

Learning continuous representations from unlabeled textual data has been increasingly studied for benefiting semi-supervised learning. Although it is relatively easier to interpret discrete representations, due to the difficulty of…

Computation and Language · Computer Science 2020-04-29 Yau-Shian Wang , Hung-Yi Lee , Yun-Nung Chen

Sequential Recommendation is a widely studied paradigm for learning users' dynamic interests from historical interactions for predicting the next potential item. Although lots of research work has achieved remarkable progress, they are…

Information Retrieval · Computer Science 2023-03-02 Yongqiang Han , Likang Wu , Hao Wang , Guifeng Wang , Mengdi Zhang , Zhi Li , Defu Lian , Enhong Chen

Learning distributed representations of documents has pushed the state-of-the-art in several natural language processing tasks and was successfully applied to the field of recommender systems recently. In this paper, we propose a novel…

Information Retrieval · Computer Science 2017-11-29 Danijar Hafner , Alexander Immer , Willi Raschkowski , Fabian Windheuser

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

Latent reasoning has emerged as a promising paradigm for sequential recommendation, enabling models to capture complex user intent through multi-step deliberation. Yet existing approaches often rely on deterministic latent chains that…

Information Retrieval · Computer Science 2026-02-13 Jie Jiang , Yang Wu , Qian Li , Yuling Xiong , Yihang Su , Junbang Huo , Longfei Lu , Jun Zhang , Huan Yu

Understanding the strengths and weaknesses of machine learning (ML) algorithms is crucial for determine their scope of application. Here, we introduce the DIverse and GENerative ML Benchmark (DIGEN) - a collection of synthetic datasets for…

Machine Learning · Computer Science 2021-07-15 Patryk Orzechowski , Jason H. Moore

The pre-trained text-image discriminative models, such as CLIP, has been explored for open-vocabulary semantic segmentation with unsatisfactory results due to the loss of crucial localization information and awareness of object shapes.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Jinglong Wang , Xiawei Li , Jing Zhang , Qingyuan Xu , Qin Zhou , Qian Yu , Lu Sheng , Dong Xu

This paper presents a novel kernel-based generative classifier which is defined in a distortion subspace using polynomial series expansion, named Kernel-Distortion (KD) classifier. An iterative kernel selection algorithm is developed to…

Machine Learning · Statistics 2016-06-22 Bo Tang , Paul M. Baggenstoss , Haibo He

Sequential recommendation aims to predict a user's next action in large-scale recommender systems. While traditional methods often suffer from insufficient information interaction, recent generative recommendation models partially address…

Information Retrieval · Computer Science 2026-02-10 Haibo Xing , Hao Deng , Yucheng Mao , Lingyu Mu , Jinxin Hu , Yi Xu , Hao Zhang , Jiahao Wang , Shizhun Wang , Yu Zhang , Xiaoyi Zeng , Jing Zhang

Session-based recommendation aims to predict intents of anonymous users based on their limited behaviors. Modeling user behaviors involves two distinct rationales: co-occurrence patterns reflected by item IDs, and fine-grained preferences…

Information Retrieval · Computer Science 2024-04-22 Xiaokun Zhang , Bo Xu , Zhaochun Ren , Xiaochen Wang , Hongfei Lin , Fenglong Ma

Segmentation of the fetal brain from stacks of motion-corrupted fetal MRI slices is important for motion correction and high-resolution volume reconstruction. Although Convolutional Neural Networks (CNNs) have been widely used for automatic…

Image and Video Processing · Electrical Eng. & Systems 2020-11-05 Guotai Wang , Michael Aertsen , Jan Deprest , Sebastien Ourselin , Tom Vercauteren , Shaoting Zhang

With the prevalence of social networks on online platforms, social recommendation has become a vital technique for enhancing personalized recommendations. The effectiveness of social recommendations largely relies on the social homophily…

Social and Information Networks · Computer Science 2025-08-28 Chengyi Liu , Jiahao Zhang , Shijie Wang , Wenqi Fan , Qing Li

With the help of powerful generative models, Semantic Image Compression (SIC) has achieved impressive performance at ultra-low bitrate. However, due to coarse-grained visual-semantic alignment and inherent randomness, the reliability of SIC…

Image and Video Processing · Electrical Eng. & Systems 2025-06-03 Chenhao Wu , Qingbo Wu , Haoran Wei , Shuai Chen , Mingzhou He , King Ngi Ngan , Fanman Meng , Hongliang Li

User-side group fairness is crucial for modern recommender systems, aiming to alleviate performance disparities among user groups defined by sensitive attributes like gender, race, or age. In the ever-evolving landscape of user-item…

Information Retrieval · Computer Science 2025-05-30 Hyunsik Yoo , Zhichen Zeng , Jian Kang , Ruizhong Qiu , David Zhou , Zhining Liu , Fei Wang , Charlie Xu , Eunice Chan , Hanghang Tong

In this paper, we consider controllability as a means to satisfy dynamic preferences of users, enabling them to control recommendations such that their current preference is met. While deep models have shown improved performance for…

Information Retrieval · Computer Science 2021-10-12 Samarth Bhargav , Evangelos Kanoulas
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