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Recommender systems are essential for guiding users through the vast and diverse landscape of digital content by delivering personalized and relevant suggestions. However, improving both personalization and interpretability remains a…

Information Retrieval · Computer Science 2025-08-05 Danial Ebrat , Tina Aminian , Sepideh Ahmadian , Luis Rueda

Query expansion is a well known method to improve the performance of information retrieval systems. In this work we have tested different approaches to extract the candidate query terms from the top ranked documents returned by the…

Information Retrieval · Computer Science 2008-12-18 José R. Pérez-Agüera , Lourdes Araujo

Many real life optimization problems contain both hard and soft constraints, as well as qualitative conditional preferences. However, there is no single formalism to specify all three kinds of information. We therefore propose a framework,…

Artificial Intelligence · Computer Science 2009-05-26 Carmel Domshlak , Francesca Rossi , Kristen Brent Venable , Toby Walsh

We consider interactive tools that help users search for their most preferred item in a large collection of options. In particular, we examine example-critiquing, a technique for enabling users to incrementally construct preference models…

Artificial Intelligence · Computer Science 2011-10-04 B. Faltings , P. Pu , P. Viappiani

Managing transition plans is one of the major problems of people with cognitive disabilities. Therefore, finding an automated way to generate such plans would be a helpful tool for this community. In this paper we have specifically proposed…

Artificial Intelligence · Computer Science 2024-02-02 Javier Carbo , Jose M Molina , Miguel A Patricio

Classical communication capacity of a channel can be enhanced either through a device called a 'quantum switch' or by putting the channel in a quantum superposition. The gains in the two cases, although different, have their origin in the…

Quantum Physics · Physics 2020-01-27 Nicolas Loizeau , Alexei Grinbaum

We continue previous work by Mattei et al. (Mattei, N., Pini, M., Rossi, F., Venable, K.: Bribery in voting with CP-nets. Ann. of Math. and Artif. Intell. pp. 1--26 (2013)) in which they study the computational complexity of bribery schemes…

Computer Science and Game Theory · Computer Science 2016-05-19 Britta Dorn , Dominikus Krüger

Topological properties of networks are widely applied to study the link-prediction problem recently. Common Neighbors, for example, is a natural yet efficient framework. Many variants of Common Neighbors have been thus proposed to further…

Social and Information Networks · Computer Science 2014-09-18 Fei Tan , Yongxiang Xia , Boyao Zhu

The complementarity and substitutability between products are essential concepts in retail and marketing. Qualitatively, two products are said to be substitutable if a customer can replace one product by the other, while they are…

Social and Information Networks · Computer Science 2021-08-26 Yu Tian , Sebastian Lautz , Alisdiar O. G. Wallis , Renaud Lambiotte

Collaborative filtering is a very useful general technique for exploiting the preference patterns of a group of users to predict the utility of items to a particular user. Previous research has studied several probabilistic graphic models…

Information Retrieval · Computer Science 2012-12-12 Rong Jin , Luo Si , ChengXiang Zhai

Shifting of objects in an image and merging many images after appropriate shifting is being used in several engineering and scientific applications which require complex perception development. A method has been presented here which could…

Computer Vision and Pattern Recognition · Computer Science 2014-07-31 T. R. Gopalakrishnan Nair , Richa Sharma

Motivated by the increasing demand for multi-source data integration in various scientific fields, in this paper we study matrix completion in scenarios where the data exhibits certain block-wise missing structures -- specifically, where…

Methodology · Statistics 2025-08-19 Runbing Zheng , Minh Tang

A recommender system is an information filtering technology which can be used to predict preference ratings of items (products, services, movies, etc) and/or to output a ranking of items that are likely to be of interest to the user.…

Information Retrieval · Computer Science 2019-01-08 Camila V. Sundermann , Marcos A. Domingues , Ricardo M. Marcacini , Solange O. Rezende

Cognitive Radio has been proposed as a key technology to significantly improve spectrum usage in wireless networks by enabling unlicensed users to access unused resource. We present new algorithms that are needed for the implementation of…

Information Theory · Computer Science 2013-10-22 Hamed Mahmoudi , Georgios Rodolakis , Leonidas Georgiadis , David Saad

Recently, recommender systems have been able to emit substantially improved recommendations by leveraging user-provided reviews. Existing methods typically merge all reviews of a given user or item into a long document, and then process…

Information Retrieval · Computer Science 2020-01-14 Xin Dong , Jingchao Ni , Wei Cheng , Zhengzhang Chen , Bo Zong , Dongjin Song , Yanchi Liu , Haifeng Chen , Gerard de Melo

Aggregating preferences under incomplete or constrained feedback is a fundamental problem in social choice and related domains. While prior work has established strong impossibility results for pairwise comparisons, this paper extends the…

Computer Science and Game Theory · Computer Science 2025-02-19 Evi Micha , Vasilis Varsamis

This work considers clustering nodes of a largely incomplete graph. Under the problem setting, only a small amount of queries about the edges can be made, but the entire graph is not observable. This problem finds applications in…

Machine Learning · Computer Science 2021-10-04 Shahana Ibrahim , Xiao Fu

A planner wants to select one agent out of n agents on the basis of a binary characteristic that is commonly known to all agents but is not observed by the planner. Any pair of agents can either be friends or enemies or impartials of each…

Theoretical Economics · Economics 2025-11-17 Francis Bloch , Bhaskar Dutta , Marcin Dziubiński

Preference learning from pairwise feedback is a widely adopted framework in applications such as reinforcement learning with human feedback and recommendations. In many practical settings, however, user interactions are limited or costly,…

Machine Learning · Computer Science 2025-11-03 Jingyuan Liu , Fatemeh Ghaffari , Xuchuang Wang , Xutong Liu , Mohammad Hajiesmaili , Carlee Joe-Wong

Recommendations are employed by Content Providers (CPs) of streaming services in order to boost user engagement and their revenues. Recent works suggest that nudging recommendations towards cached items can reduce operational costs in the…

Networking and Internet Architecture · Computer Science 2023-01-31 Dimitra Tsigkari , George Iosifidis , Thrasyvoulos Spyropoulos