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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

With the explosive growth of Internet data, users are facing the problem of information overload, which makes it a challenge to efficiently obtain the required resources. Recommendation systems have emerged in this context. By filtering…

Information Retrieval · Computer Science 2024-10-22 Wenyi Liu , Rui Wang , Yuanshuai Luo , Jianjun Wei , Zihao Zhao , Junming Huang

Click-through rate (CTR) prediction is critical for industrial applications such as recommender system and online advertising. Practically, it plays an important role for CTR modeling in these applications by mining user interest from rich…

Information Retrieval · Computer Science 2019-05-27 Qi Pi , Weijie Bian , Guorui Zhou , Xiaoqiang Zhu , Kun Gai

Collaborative filtering is used to recommend items to a user without requiring a knowledge of the item itself and tends to outperform other techniques. However, collaborative filtering suffers from the cold-start problem, which occurs when…

Machine Learning · Computer Science 2014-06-10 Michael R. Smith , Tony Martinez , Michael Gashler

Click-Through Rate (CTR) prediction, crucial in applications like recommender systems and online advertising, involves ranking items based on the likelihood of user clicks. User behavior sequence modeling has marked progress in CTR…

Information Retrieval · Computer Science 2023-08-22 Hengyu Zhang , Chang Meng , Wei Guo , Huifeng Guo , Jieming Zhu , Guangpeng Zhao , Ruiming Tang , Xiu Li

Recommender systems have become fundamental building blocks of modern online products and services, and have a substantial impact on user experience. In the past few years, deep learning methods have attracted a lot of research, and are now…

Information Retrieval · Computer Science 2023-08-17 Davide Buffelli , Ashish Gupta , Agnieszka Strzalka , Vassilis Plachouras

The cold start problem in recommender systems is a long-standing challenge, which requires recommending to new users (items) based on attributes without any historical interaction records. In these recommendation systems, warm users (items)…

Information Retrieval · Computer Science 2021-06-01 Shuai Wang , Kun Zhang , Le Wu , Haiping Ma , Richang Hong , Meng Wang

Click-through rate (CTR) prediction has become increasingly indispensable for various Internet applications. Traditional CTR models convert the multi-field categorical data into ID features via one-hot encoding, and extract the…

Information Retrieval · Computer Science 2024-06-27 Jianghao Lin , Bo Chen , Hangyu Wang , Yunjia Xi , Yanru Qu , Xinyi Dai , Kangning Zhang , Ruiming Tang , Yong Yu , Weinan Zhang

The Click-Through Rate (CTR) prediction task is critical in industrial recommender systems, where models are usually deployed on dynamic streaming data in practical applications. Such streaming data in real-world recommender systems face…

Information Retrieval · Computer Science 2023-07-17 Qi-Wei Wang , Hongyu Lu , Yu Chen , Da-Wei Zhou , De-Chuan Zhan , Ming Chen , Han-Jia Ye

Recommender systems have shown great potential to address information overload problem, namely to help users in finding interesting and relevant objects within a huge information space. Some physical dynamics, including heat conduction…

Data Analysis, Statistics and Probability · Physics 2011-07-04 Linyuan Lu , Weiping Liu

Recommender systems are popular in e-commerce as they suggest items of interest to users. Researchers have addressed the cold-start problem where either the user or the item is new. However, the situation with both new user and new item has…

Information Retrieval · Computer Science 2013-05-08 Fan Min , William Zhu

The item cold-start problem is critical for online recommendation systems, as the success of this phase determines whether high-quality new items can transition to popular ones, receive essential feedback to inspire creators, and thus lead…

Information Retrieval · Computer Science 2025-06-19 Yu-Ting Lan , Yang Huo , Yi Shen , Xiao Yang , Zuotao Liu

A standard approach to Collaborative Filtering (CF), i.e. prediction of user ratings on items, relies on Matrix Factorization techniques. Representations for both users and items are computed from the observed ratings and used for…

Information Retrieval · Computer Science 2015-06-23 Gabriella Contardo , Ludovic Denoyer , Thierry Artieres

Deep learning techniques have been applied widely in industrial recommendation systems. However, far less attention has been paid to the overfitting problem of models in recommendation systems, which, on the contrary, is recognized as a…

Information Retrieval · Computer Science 2022-09-14 Zhao-Yu Zhang , Xiang-Rong Sheng , Yujing Zhang , Biye Jiang , Shuguang Han , Hongbo Deng , Bo Zheng

Forecasting multi-step user behavior trajectories requires reasoning over structured preferences across future actions, a challenge overlooked by traditional sequential recommendation. This problem is critical for applications such as…

Information Retrieval · Computer Science 2025-11-04 Hongtao Huang , Chengkai Huang , Junda Wu , Tong Yu , Julian McAuley , Lina Yao

Click-Through Rate (CTR) prediction models are integral to a myriad of industrial settings, such as personalized search advertising. Current methods typically involve feature extraction from users' historical behavior sequences combined…

Machine Learning · Computer Science 2025-07-16 Lingwei Kong , Lu Wang , Changping Peng , Zhangang Lin , Ching Law , Jingping Shao

Classical sequential recommendation models generally adopt ID embeddings to store knowledge learned from user historical behaviors and represent items. However, these unique IDs are challenging to be transferred to new domains. With the…

Information Retrieval · Computer Science 2024-05-08 Yiqing Wu , Ruobing Xie , Zhao Zhang , Fuzhen Zhuang , Xu Zhang , Leyu Lin , Zhanhui Kang , Yongjun Xu

Click-Through Rate (CTR) prediction plays a core role in recommender systems, serving as the final-stage filter to rank items for a user. The key to addressing the CTR task is learning feature interactions that are useful for prediction,…

Information Retrieval · Computer Science 2023-04-27 Yang Zhang , Tianhao Shi , Fuli Feng , Wenjie Wang , Dingxian Wang , Xiangnan He , Yongdong Zhang

Click-through rate (CTR) prediction is a critical task in online advertising systems. Most existing methods mainly model the feature-CTR relationship and suffer from the data sparsity issue. In this paper, we propose DeepMCP, which models…

Machine Learning · Computer Science 2019-07-22 Wentao Ouyang , Xiuwu Zhang , Shukui Ren , Chao Qi , Zhaojie Liu , Yanlong Du

We propose a general Variational Embedding Learning Framework (VELF) for alleviating the severe cold-start problem in CTR prediction. VELF addresses the cold start problem via alleviating over-fits caused by data-sparsity in two ways:…

Information Retrieval · Computer Science 2022-01-27 Xiaoxiao Xu , Chen Yang , Qian Yu , Zhiwei Fang , Jiaxing Wang , Chaosheng Fan , Yang He , Changping Peng , Zhangang Lin , Jingping Shao