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Cold-start has being a critical issue in recommender systems with the explosion of data in e-commerce. Most existing studies proposed to alleviate the cold-start problem are also known as hybrid recommender systems that learn…

Information Retrieval · Computer Science 2020-11-03 Yan Zhang , Ivor W. Tsang , Lixin Duan

Recommendation system is important to a content sharing/creating social network. Collaborative filtering is a widely-adopted technology in conventional recommenders, which is based on similarity between positively engaged content items…

Information Retrieval · Computer Science 2019-09-05 Yifang Liu , Zhentao Xu , Cong Hui , Yi Xuan , Jessie Chen , Yuanming Shan

Recommendation efficiency and data sparsity problems have been regarded as two challenges of improving performance for online recommendation. Most of the previous related work focus on improving recommendation accuracy instead of…

Information Retrieval · Computer Science 2020-11-03 Yan Zhang , Ivor W. Tsang , Hongzhi Yin , Guowu Yang , Defu Lian , Jingjing Li

The cold-start problem is a long-standing challenge in recommender systems. As a promising solution, content-based generative models usually project a cold-start item's content onto a warm-start item embedding to capture collaborative…

Information Retrieval · Computer Science 2023-02-23 Zhihui Zhou , Lilin Zhang , Ning Yang

It is well known that collaborative filtering (CF) based recommender systems provide better modeling of users and items associated with considerable rating history. The lack of historical ratings results in the user and the item cold-start…

Information Retrieval · Computer Science 2016-09-21 Oren Anava , Shahar Golan , Nadav Golbandi , Zohar Karnin , Ronny Lempel , Oleg Rokhlenko , Oren Somekh

Collaborative filtering is an effective recommendation approach in which the preference of a user on an item is predicted based on the preferences of other users with similar interests. A big challenge in using collaborative filtering…

Information Retrieval · Computer Science 2012-03-19 Yu Zhang , Bin Cao , Dit-Yan Yeung

Collaborative Filtering (CF) is widely used in large-scale recommendation engines because of its efficiency, accuracy and scalability. However, in practice, the fact that recommendation engines based on CF require interactions between users…

Information Retrieval · Computer Science 2016-11-18 Jianbo Yuan , Walid Shalaby , Mohammed Korayem , David Lin , Khalifeh AlJadda , Jiebo Luo

The ever-increasing data scale of user-item interactions makes it challenging for an effective and efficient recommender system. Recently, hash-based collaborative filtering (Hash-CF) approaches employ efficient Hamming distance of learned…

Information Retrieval · Computer Science 2022-05-25 Fan Wang , Weiming Liu , Chaochao Chen , Mengying Zhu , Xiaolin Zheng

Collaborative Filtering (CF) is one of the most commonly used recommendation methods. CF consists in predicting whether, or how much, a user will like (or dislike) an item by leveraging the knowledge of the user's preferences as well as…

Information Retrieval · Computer Science 2018-07-17 Mohamed Reda Bouadjenek , Esther Pacitti , Maximilien Servajean , Florent Masseglia , Amr El Abbadi

A major challenge in collaborative filtering methods is how to produce recommendations for cold items (items with no ratings), or integrate cold item into an existing catalog. Over the years, a variety of hybrid recommendation models have…

Information Retrieval · Computer Science 2021-12-15 Oren Barkan , Roy Hirsch , Ori Katz , Avi Caciularu , Jonathan Weill , Noam Koenigstein

Cold-start challenges in recommender systems necessitate leveraging auxiliary features beyond user-item interactions. However, the presence of irrelevant or noisy features can degrade predictive performance, whereas an excessive number of…

Information Retrieval · Computer Science 2025-08-11 Nikita Sukhorukov , Danil Gusak , Evgeny Frolov

Content-aware recommendation approaches are essential for providing meaningful recommendations for \textit{new} (i.e., \textit{cold-start}) items in a recommender system. We present a content-aware neural hashing-based collaborative…

Information Retrieval · Computer Science 2020-06-02 Casper Hansen , Christian Hansen , Jakob Grue Simonsen , Stephen Alstrup , Christina Lioma

Collaborative filtering (CF) has been one of the most important and popular recommendation methods, which aims at predicting users' preferences (ratings) based on their past behaviors. Recently, various types of side information beyond the…

Information Retrieval · Computer Science 2020-12-29 Huan Zhao , Quanming Yao , Yangqiu Song , James Kwok , Dik Lun Lee

Collaborative filtering algorithms haven been widely used in recommender systems. However, they often suffer from the data sparsity and cold start problems. With the increasing popularity of social media, these problems may be solved by…

Information Retrieval · Computer Science 2014-12-25 Chen Luo , Wei Pang , Zhe Wang

Efficiency is crucial to the online recommender systems. Representing users and items as binary vectors for Collaborative Filtering (CF) can achieve fast user-item affinity computation in the Hamming space, in recent years, we have…

Information Retrieval · Computer Science 2019-05-10 Chenghao Liu , Tao Lu , Xin Wang , Zhiyong Cheng , Jianling Sun , Steven C. H. Hoi

Despite the popularity of Collaborative Filtering (CF), CF-based methods are haunted by the \textit{cold-start} problem, which has a significantly negative impact on users' experiences with Recommender Systems (RS). In this paper, to…

Information Retrieval · Computer Science 2018-09-03 Lei Zheng , Chun-Ta Lu , Fei Jiang , Jiawei Zhang , Philip S. Yu

Collaborative Filtering is the most widely used prediction technique in Recommendation System. Most of the current CF recommender systems maintains single criteria user rating in user item matrix. However, recent studies indicate that…

Information Retrieval · Computer Science 2015-03-24 Dheeraj kumar Bokde , Sheetal Girase , Debajyoti Mukhopadhyay

Generative models have shown great promise in collaborative filtering by capturing the underlying distribution of user interests and preferences. However, existing approaches struggle with inaccurate posterior approximations and…

Information Retrieval · Computer Science 2025-09-08 Chengkai Liu , Yangtian Zhang , Jianling Wang , Rex Ying , James Caverlee

The fast online recommendation is critical for applications with large-scale databases; meanwhile, it is challenging to provide accurate recommendations in sparse scenarios. Hash technique has shown its superiority for speeding up the…

Information Retrieval · Computer Science 2025-12-24 Yan Zhang , Li Deng , Lixin Duan , Ivor W. Tsang , Guowu Yang

Collaborative Filtering (CF), the most common approach to build Recommender Systems, became pervasive in our daily lives as consumers of products and services. However, challenges limit the effectiveness of Collaborative Filtering…

Information Retrieval · Computer Science 2022-11-16 Miguel G. Silva , Rui Henriques , Sara C. Madeira
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