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This paper studies the estimation of ranked-list discrete choice models with single and multiple purchases. In this setting, each consumer type is characterized by a ranking over a subset of products and a desired number of purchases, and…

Data Structures and Algorithms · Computer Science 2026-05-11 Luciano Costa , Gerardo Berbeglia , Claudio Contardo , Jean-François Cordeau

With the development of Internet technology and the expansion of social networks, online platforms have become an important way for people to obtain information. The introduction of tags facilitates information categorization and retrieval.…

Information Retrieval · Computer Science 2023-10-10 Bing Liu , Pengyu Xu , Sijin Lu , Shijing Wang , Hongjian Sun , Liping Jing

Most conversational recommendation approaches are either not explainable, or they require external user's knowledge for explaining or their explanations cannot be applied in real time due to computational limitations. In this work, we…

Artificial Intelligence · Computer Science 2021-03-23 Nikolaos Kondylidis , Jie Zou , Evangelos Kanoulas

Recommender systems have become increasingly important with the rise of the web as a medium for electronic and business transactions. One of the key drivers of this technology is the ease with which users can provide feedback about their…

Information Retrieval · Computer Science 2024-11-05 Dong Li

Legacy procedures for topic modelling have generally suffered problems of overfitting and a weakness towards reconstructing sparse topic structures. With motivation from a consumer-generated corpora, this paper proposes semiparametric topic…

Computation and Language · Computer Science 2025-03-05 Dominic B. Dayta , Erniel B. Barrios

Sequential recommender systems explore users' preferences and behavioral patterns from their historically generated data. Recently, researchers aim to improve sequential recommendation by utilizing massive user-generated multi-modal…

Information Retrieval · Computer Science 2024-04-29 Meng Yan , Haibin Huang , Ying Liu , Juan Zhao , Xiyue Gao , Cai Xu , Ziyu Guan , Wei Zhao

Learning models of user behaviour is an important problem that is broadly applicable across many application domains requiring human-robot interaction. In this work we show that it is possible to learn a generative model for distinct user…

Artificial Intelligence · Computer Science 2019-06-25 Daniel Angelov , Yordan Hristov , Subramanian Ramamoorthy

Recommender systems are a valuable way to engage users in a system, increase participation and show them resources they may not have found otherwise. One significant challenge is that user interests may change over time and certain items…

Information Retrieval · Computer Science 2020-06-17 Oznur Alkan , Elizabeth Daly

Recommendation systems are essential tools in modern e-commerce, facilitating personalized user experiences by suggesting relevant products. Recent advancements in generative models have demonstrated potential in enhancing recommendation…

Information Retrieval · Computer Science 2025-11-25 Zida Liang , Changfa Wu , Dunxian Huang , Weiqiang Sun , Ziyang Wang , Yuliang Yan , Jian Wu , Yuning Jiang , Bo Zheng , Ke Chen , Silu Zhou , Yu Zhang

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

Multimodal recommendation aims to recommend user-preferred candidates based on her/his historically interacted items and associated multimodal information. Previous studies commonly employ an embed-and-retrieve paradigm: learning user and…

Information Retrieval · Computer Science 2026-01-15 Han Liu , Yinwei Wei , Xuemeng Song , Weili Guan , Yuan-Fang Li , Liqiang Nie

Recommendations Systems have been identified to be one of the integral elements of driving sales in e-commerce sites. The utilization of opinion mining data extracted from trends has been attempted to improve the recommendations that can be…

Information Retrieval · Computer Science 2022-05-24 Dinuka Ravijaya Piyadigama , Guhanathan Poravi

In this era of abundant digital information, customer satisfaction has become one of the prominent factors in the success of any business. Customers want a one-click solution for almost everything. They tend to get unsatisfied if they have…

Computation and Language · Computer Science 2022-09-09 Ankit Patil , Ankush Chopra , Sohom Ghosh , Vamshi Vadla

Recommender systems are widely used to suggest engaging content, and Large Language Models (LLMs) have given rise to generative recommenders. Such systems can directly generate items, including for open-set tasks like question suggestion.…

Computation and Language · Computer Science 2024-06-11 Lütfi Kerem Senel , Besnik Fetahu , Davis Yoshida , Zhiyu Chen , Giuseppe Castellucci , Nikhita Vedula , Jason Choi , Shervin Malmasi

E-commerce click-stream data and product catalogs offer critical user behavior insights and product knowledge. This paper propose a multi-modal transformer termed as PINCER, that leverages the above data sources to transform initial user…

Information Retrieval · Computer Science 2025-01-28 Srivatsa Mallapragada , Ying Xie , Varsha Rani Chawan , Zeyad Hailat , Yuanbo Wang

Recommender systems serve the dual purpose of presenting relevant content to users and helping content creators reach their target audience. The dual nature of these systems naturally influences both users and creators: users' preferences…

Information Retrieval · Computer Science 2024-11-04 Tao Lin , Kun Jin , Andrew Estornell , Xiaoying Zhang , Yiling Chen , Yang Liu

Explainable recommendation systems leverage transparent reasoning to foster user trust and improve decision-making processes. Current approaches typically decouple recommendation generation from explanation creation, violating causal…

Artificial Intelligence · Computer Science 2025-03-12 Guanrong Li , Haolin Yang , Xinyu Liu , Zhen Wu , Xinyu Dai

By providing explanations for users and system designers to facilitate better understanding and decision making, explainable recommendation has been an important research problem. In this paper, we propose Counterfactual Explainable…

Information Retrieval · Computer Science 2023-02-21 Juntao Tan , Shuyuan Xu , Yingqiang Ge , Yunqi Li , Xu Chen , Yongfeng Zhang

Incorporating knowledge graph into recommender systems has attracted increasing attention in recent years. By exploring the interlinks within a knowledge graph, the connectivity between users and items can be discovered as paths, which…

Information Retrieval · Computer Science 2018-11-13 Xiang Wang , Dingxian Wang , Canran Xu , Xiangnan He , Yixin Cao , Tat-Seng Chua

Traditional recommendation systems represent users and items as dense vectors and learn to align them in a shared latent space for relevance estimation. Recent LLM-based recommenders instead leverage natural-language representations that…