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This work explores the ability of collective matrix factorization models in recommender systems to make predictions about users and items for which there is side information available but no feedback or interactions data, and proposes a new…

Information Retrieval · Computer Science 2020-03-17 David Cortes

Conversational recommender systems (CRS) have shown great success in accurately capturing a user's current and detailed preference through the multi-round interaction cycle while effectively guiding users to a more personalized…

Information Retrieval · Computer Science 2022-08-23 Allen Lin , Jianling Wang , Ziwei Zhu , James Caverlee

Latent factor models for Recommender Systems with implicit feedback typically treat unobserved user-item interactions (i.e. missing information) as negative feedback. This is frequently done either through negative sampling (point--wise…

Machine Learning · Computer Science 2018-08-17 Juan Arévalo , Juan Ramón Duque , Marco Creatura

In recommender systems, one common challenge is the cold-start problem, where interactions are very limited for fresh users in the systems. To address this challenge, recently, many works introduce the meta-optimization idea into the…

Information Retrieval · Computer Science 2022-06-13 Tianxin Wei , Jingrui He

Recommender systems face a critical challenge in the item cold-start problem, which limits content diversity and exacerbates popularity bias by struggling to recommend new items. While existing solutions often rely on auxiliary data, but…

Information Retrieval · Computer Science 2025-07-15 Dong Wang , Junyi Jiao , Arnab Bhadury , Yaping Zhang , Mingyan Gao , Onkar Dalal

Recommender systems (RS) commonly retrieve potential candidate items for users from a massive number of items by modeling user interests based on historical interactions. However, historical interaction data is highly sparse, and most items…

Information Retrieval · Computer Science 2023-01-18 Ziwei Fan , Alice Wang , Zahra Nazari

Existing dialogue systems rely on Query Suggestion (QS) to enhance user engagement. Recent efforts typically employ large language models with Click-Through Rate (CTR) model, yet fail in cold-start scenarios due to their heavy reliance on…

Computation and Language · Computer Science 2026-03-25 Qi Sun , Kejun Xiao , Huaipeng Zhao , Tao Luo , Xiaoyi Zeng

The initial interaction of a user with a recommender system is problematic because, in such a so-called cold start situation, the recommender system has very little information about the user, if any. Moreover, in collaborative filtering,…

Information Retrieval · Computer Science 2023-10-17 Noa Tuval , Alain Hertz , Tsvi Kuflik

In this paper we propose to solve an important problem in recommendation -- user cold start, based on meta leaning method. Previous meta learning approaches finetune all parameters for each new user, which is both computing and storage…

Information Retrieval · Computer Science 2019-12-10 Liang Zhao , Yang Wang , Daxiang Dong , Hao Tian

The item cold-start problem is crucial for online recommender systems, as the success of the cold-start phase determines whether items can transition into popular ones. Prompt learning, a powerful technique used in natural language…

Information Retrieval · Computer Science 2024-12-25 Yuezihan Jiang , Gaode Chen , Wenhan Zhang , Jingchi Wang , Yinjie Jiang , Qi Zhang , Jingjian Lin , Peng Jiang , Kaigui Bian

Mitigating the new user cold-start problem has been critical in the recommendation system for online service providers to influence user experience in decision making which can ultimately affect the intention of users to use a particular…

Artificial Intelligence · Computer Science 2020-11-26 Po-Lin Lai , Chih-Yun Chen , Liang-Wei Lo , Chien-Chin Chen

Embedding & MLP has become a paradigm for modern large-scale recommendation system. However, this paradigm suffers from the cold-start problem which will seriously compromise the ecological health of recommendation systems. This paper…

Information Retrieval · Computer Science 2022-05-30 Xu Zhao , Yi Ren , Ying Du , Shenzheng Zhang , Nian Wang

Among the machine learning applications to business, recommender systems would take one of the top places when it comes to success and adoption. They help the user in accelerating the process of search while helping businesses maximize…

Information Retrieval · Computer Science 2019-07-23 Kiran Rama , Pradeep Kumar , Bharat Bhasker

With the increasing development of e-commerce and online services, personalized recommendation systems have become crucial for enhancing user satisfaction and driving business revenue. Traditional sequential recommendation methods that rely…

Information Retrieval · Computer Science 2023-04-27 Kunzhe Song , Qingfeng Sun , Can Xu , Kai Zheng , Yaming Yang

Cold-start problems are enormous challenges in practical recommender systems. One promising solution for this problem is cross-domain recommendation (CDR) which leverages rich information from an auxiliary (source) domain to improve the…

Information Retrieval · Computer Science 2021-05-12 Yongchun Zhu , Kaikai Ge , Fuzhen Zhuang , Ruobing Xie , Dongbo Xi , Xu Zhang , Leyu Lin , Qing He

Recommender Systems (RS) have became a popular research topic and, since 2016, Deep Learning methods and techniques have been increasingly explored in this area. News RS are aimed to personalize users experiences and help them discover…

Information Retrieval · Computer Science 2020-01-15 Gabriel de Souza Pereira Moreira

Email platforms need to generate personalized rankings of emails that satisfy user preferences, which may vary over time. We approach this as a recommendation problem based on three criteria: closeness (how relevant the sender and topic are…

Information Retrieval · Computer Science 2023-08-17 Jiayi Liu , Jennifer Neville

Cross-domain sequential recommendation (CDSR) aims to address the data sparsity problems that exist in traditional sequential recommendation (SR) systems. The existing approaches aim to design a specific cross-domain unit that can transfer…

Information Retrieval · Computer Science 2024-06-06 Wujiang Xu , Xuying Ning , Wenfang Lin , Mingming Ha , Qiongxu Ma , Qianqiao Liang , Xuewen Tao , Linxun Chen , Bing Han , Minnan Luo

The task of recommending items to a group of users, a.k.a. group recommendation, is receiving increasing attention. However, the cold-start problem inherent in recommender systems is amplified in group recommendation because interaction…

Information Retrieval · Computer Science 2022-10-19 Guo linxin , Tao yinghui , Gao Min , Yu Junliang , Zhao liang , Li Wentao

Data sparsity and cold-start problems are persistent challenges in recommendation systems. Cross-domain recommendation (CDR) is a promising solution that utilizes knowledge from the source domain to improve the recommendation performance in…

Information Retrieval · Computer Science 2023-11-07 Yanyu Chen , Yao Yao , Wai Kin Victor Chan , Li Xiao , Kai Zhang , Liang Zhang , Yun Ye