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The recent advances of conversational recommendations provide a promising way to efficiently elicit users' preferences via conversational interactions. To achieve this, the recommender system conducts conversations with users, asking their…

Information Retrieval · Computer Science 2022-09-14 Jinhang Zuo , Songwen Hu , Tong Yu , Shuai Li , Handong Zhao , Carlee Joe-Wong

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

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

This paper proposes a recommender system to alleviate the cold-start problem that can estimate user preferences based on only a small number of items. To identify a user's preference in the cold state, existing recommender systems, such as…

Information Retrieval · Computer Science 2019-08-02 Hoyeop Lee , Jinbae Im , Seongwon Jang , Hyunsouk Cho , Sehee Chung

The abundance of information in web applications make recommendation essential for users as well as applications. Despite the effectiveness of existing recommender systems, we find two major limitations that reduce their overall…

Information Retrieval · Computer Science 2020-09-01 Dilruk Perera , Roger Zimmermann

Recommendation systems are a key modern application of machine learning, but they have the downside that they often draw upon sensitive user information in making their predictions. We show how to address this deficiency by basing a…

Machine Learning · Computer Science 2021-12-03 Naveen Durvasula , Franklyn Wang , Scott Duke Kominers

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

Cold-start recommendation remains a central challenge in dynamic, open-world platforms, requiring models to recommend for newly registered users (user cold-start) and to recommend newly introduced items to existing users (item cold-start)…

Information Retrieval · Computer Science 2026-04-07 Zhen Zhang , Jujia Zhao , Xinyu Ma , Xin Xin , Maarten de Rijke , Zhaochun Ren

In real-world streaming recommender systems, user preferences evolve dynamically over time. Existing bandit-based methods treat time merely as a timestamp, neglecting its explicit relationship with user preferences and leading to suboptimal…

Machine Learning · Computer Science 2026-02-10 Chenglei Shen , Yi Zhan , Weijie Yu , Xiao Zhang , Jun Xu

A major challenge in recommender systems is handling new users, whom are also called $\textit{cold-start}$ users. In this paper, we propose a novel approach for learning an optimal series of questions with which to interview cold-start…

Information Retrieval · Computer Science 2018-06-19 Hima Varsha Dureddy , Zachary Kaden

Predicting Click-Through Rates is a crucial function within recommendation and advertising platforms, as the output of CTR prediction determines the order of items shown to users. The Embedding \& MLP paradigm has become a standard approach…

Information Retrieval · Computer Science 2025-04-10 Wenqiao Zhu , Lulu Wang , Jun Wu

The exploding popularity of online content and its user base poses an evermore challenging matching problem for modern recommendation systems. Unlike other frontiers of machine learning such as natural language, recommendation systems are…

Information Retrieval · Computer Science 2024-12-09 Hong Jun Jeon , Songbin Liu , Yuantong Li , Jie Lyu , Hunter Song , Ji Liu , Peng Wu , Zheqing Zhu

Cold-start recommendation is one of the major challenges faced by recommender systems (RS). Herein, we focus on the user cold-start problem. Recently, methods utilizing side information or meta-learning have been used to model cold-start…

Information Retrieval · Computer Science 2023-09-28 Xiangyu Zhang , Zongqiang Kuang , Zehao Zhang , Fan Huang , Xianfeng Tan

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

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

Cold-start and sparsity problem are two key intrinsic problems to recommender systems. During the past two decades, researchers and industrial practitioners have spent considerable amount of efforts trying to solve the problems. However,…

Information Retrieval · Computer Science 2022-06-02 Hao Wang

In this paper, we study the stochastic multi-armed bandit problem, where the reward is driven by an unknown random variable. We propose a new variant of the Upper Confidence Bound (UCB) algorithm called Hellinger-UCB, which leverages the…

Machine Learning · Statistics 2024-04-17 Ruibo Yang , Jiazhou Wang , Andrew Mullhaupt

Recommendation systems help users find matched items based on their previous behaviors. Personalized recommendation becomes challenging in the absence of historical user-item interactions, a practical problem for startups known as the…

Information Retrieval · Computer Science 2024-03-06 Xuansheng Wu , Huachi Zhou , Yucheng Shi , Wenlin Yao , Xiao Huang , Ninghao Liu

Conversational contextual bandits elicit user preferences by occasionally querying for explicit feedback on key-terms to accelerate learning. However, there are aspects of existing approaches which limit their performance. First,…

Machine Learning · Computer Science 2023-10-03 Zhiyong Wang , Xutong Liu , Shuai Li , John C. S. Lui

With the global transformation of the fashion industry and a rise in the demand for fashion items worldwide, the need for an effectual fashion recommendation has never been more. Despite various cutting-edge solutions proposed in the past…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Dhruv Verma , Kshitij Gulati , Rajiv Ratn Shah