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In real-world recommendation systems, users would engage in variety scenarios, such as homepages, search pages, and related recommendation pages. Each of these scenarios would reflect different aspects users focus on. However, the user…

Information Retrieval · Computer Science 2025-06-24 Zhijian Feng , Wenhao Zheng , Xuanji Xiao

We present a self-supervised learning approach to learn audio-visual representations from video and audio. Our method uses contrastive learning for cross-modal discrimination of video from audio and vice-versa. We show that optimizing for…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Pedro Morgado , Nuno Vasconcelos , Ishan Misra

Recommender systems (RSs) have gained widespread applications across various domains owing to the superior ability to capture users' interests. However, the complexity and nuanced nature of users' interests, which span a wide range of…

Information Retrieval · Computer Science 2024-02-22 Yuying Zhao , Minghua Xu , Huiyuan Chen , Yuzhong Chen , Yiwei Cai , Rashidul Islam , Yu Wang , Tyler Derr

Industrial recommendation systems are typically composed of multiple stages, including retrieval, ranking, and blending. The retrieval stage plays a critical role in generating a high-recall set of candidate items that covers a wide range…

Information Retrieval · Computer Science 2025-07-01 Zhibo Fan , Hongtao Lin , Haoyu Chen , Bowen Deng , Hedi Xia , Yuke Yan , James Li

This paper presents miCSE, a mutual information-based contrastive learning framework that significantly advances the state-of-the-art in few-shot sentence embedding. The proposed approach imposes alignment between the attention pattern of…

Computation and Language · Computer Science 2023-05-24 Tassilo Klein , Moin Nabi

With the rise of short video platforms, video recommendation technology faces more complex challenges. Currently, there are multiple non-personalized modules in the video recommendation pipeline that urgently need personalized modeling…

Information Retrieval · Computer Science 2024-10-23 Chang Meng , Chenhao Zhai , Xueliang Wang , Shuchang Liu , Xiaoqiang Feng , Lantao Hu , Xiu Li , Han Li , Kun Gai

Contrastive learning has proven effective in training sequential recommendation models by incorporating self-supervised signals from augmented views. Most existing methods generate multiple views from the same interaction sequence through…

Information Retrieval · Computer Science 2025-04-24 Yuanpeng Qu , Hajime Nobuhara

Correlation exploitation is essential for efficient multi-user channel estimation (MUCE) in massive MIMO systems. However, the existing works either rely on presumed strong correlation or learn the correlation through large amount of…

Signal Processing · Electrical Eng. & Systems 2023-03-07 Yihan Xu , Lixiang Lian

Recommender systems guide users through vast amounts of information by suggesting items based on their predicted preferences. Collaborative filtering-based deep learning techniques have regained popularity due to their straightforward…

Machine Learning · Computer Science 2024-09-11 Makbule Gulcin Ozsoy

A common problem in contextual preference ranking is that a single preferred action is compared against several choices, thereby blowing up the complexity and skewing the preference distribution. In this work, we show how one can solve this…

Artificial Intelligence · Computer Science 2024-07-09 Timo Bertram , Johannes Fürnkranz , Martin Müller

Recently, leveraging different channels to model social semantic information and using self-supervised learning tasks to boost recommendation performance has been proven to be a very promising work. However, how to deeply dig out the…

Information Retrieval · Computer Science 2022-09-27 Yundong Sun , Dongjie Zhu , Haiwen Du , Zhaoshuo Tian

Bundle recommendation seeks to recommend a bundle of related items to users to improve both user experience and the profits of platform. Existing bundle recommendation models have progressed from capturing only user-bundle interactions to…

Information Retrieval · Computer Science 2024-01-12 Yunshan Ma , Yingzhi He , Xiang Wang , Yinwei Wei , Xiaoyu Du , Yuyangzi Fu , Tat-Seng Chua

A well-designed recommender system can accurately capture the attributes of users and items, reflecting the unique preferences of individuals. Traditional recommendation techniques usually focus on modeling the singular type of behaviors…

Information Retrieval · Computer Science 2023-03-06 Hongrui Xuan , Yi Liu , Bohan Li , Hongzhi Yin

Following the popularisation of media streaming, a number of video streaming services are continuously buying new video content to mine the potential profit from them. As such, the newly added content has to be handled well to be…

Information Retrieval · Computer Science 2022-01-04 Adolfo Almeida , Johan Pieter de Villiers , Allan De Freitas , Mergandran Velayudan

Model inversion, whose goal is to recover training data from a pre-trained model, has been recently proved feasible. However, existing inversion methods usually suffer from the mode collapse problem, where the synthesized instances are…

Artificial Intelligence · Computer Science 2021-05-19 Gongfan Fang , Jie Song , Xinchao Wang , Chengchao Shen , Xingen Wang , Mingli Song

Human Activity Recognition is a field of research where input data can take many forms. Each of the possible input modalities describes human behaviour in a different way, and each has its own strengths and weaknesses. We explore the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-07 Razvan Brinzea , Bulat Khaertdinov , Stylianos Asteriadis

Sequential recommendations have drawn significant attention in modeling the user's historical behaviors to predict the next item. With the booming development of multimodal data (e.g., image, text) on internet platforms, sequential…

Information Retrieval · Computer Science 2024-12-12 Changhong Li , Zhiqiang Guo

The sequential recommendation aims to recommend items, such as products, songs and places, to users based on the sequential patterns of their historical records. Most existing sequential recommender models consider the next item prediction…

Information Retrieval · Computer Science 2021-09-14 Ruihong Qiu , Zi Huang , Hongzhi Yin

The booming development and huge market of micro-videos bring new e-commerce channels for merchants. Currently, more micro-video publishers prefer to embed relevant ads into their micro-videos, which not only provides them with business…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Yali Du , Yinwei Wei , Wei Ji , Fan Liu , Xin Luo , Liqiang Nie

Instance-level contrastive learning techniques, which rely on data augmentation and a contrastive loss function, have found great success in the domain of visual representation learning. They are not suitable for exploiting the rich…

Computer Vision and Pattern Recognition · Computer Science 2021-10-22 Martine Toering , Ioannis Gatopoulos , Maarten Stol , Vincent Tao Hu