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Online social networks convey rich information about geospatial facets of reality. However in most cases, geographic information is not explicit and structured, thus preventing its exploitation in real-time applications. We address this…

Computation and Language · Computer Science 2025-03-04 Leonardo Nizzoli , Marco Avvenuti , Maurizio Tesconi , Stefano Cresci

Recommender system research has oftentimes focused on approaches that operate on large-scale datasets containing millions of user interactions. However, many small businesses struggle to apply state-of-the-art models due to their very…

Consumer electronic devices such as mobile handsets, goods tagged with RFID labels, location and position sensors are continuously generating a vast amount of location enriched data called geospatial data. Conventionally such geospatial…

Artificial Intelligence · Computer Science 2020-09-01 Arvind W. Kiwelekar , Geetanjali S. Mahamunkar , Laxman D. Netak , Valmik B Nikam

State-of-the-art deep learning methods have shown a remarkable capacity to model complex data domains, but struggle with geospatial data. In this paper, we introduce SpaceGAN, a novel generative model for geospatial domains that learns…

Machine Learning · Computer Science 2019-05-24 Konstantin Klemmer , Adriano Koshiyama , Sebastian Flennerhag

This paper proposes Text mAtching based SequenTial rEcommendation model (TASTE), which maps items and users in an embedding space and recommends items by matching their text representations. TASTE verbalizes items and user-item interactions…

Information Retrieval · Computer Science 2023-08-29 Zhenghao Liu , Sen Mei , Chenyan Xiong , Xiaohua Li , Shi Yu , Zhiyuan Liu , Yu Gu , Ge Yu

We have developed a conversational recommendation system designed to help users navigate through a set of limited options to find the best choice. Unlike many internet scale systems that use a singular set of search terms and return a…

Computation and Language · Computer Science 2021-04-15 Victor S. Bursztyn , Jennifer Healey , Eunyee Koh , Nedim Lipka , Larry Birnbaum

Due to the advances in mobile computing and multimedia techniques, there are vast amount of multimedia data with geographical information collected in multifarious applications. In this paper, we propose a novel type of image search named…

Multimedia · Computer Science 2018-06-05 Jun Long , Lei Zhu , Chengyuan Zhang , Zhan Yang , Yunwu Lin , Ruipeng Chen

Graph Neural Network (GNN) is the trending solution for item retrieval in recommendation problems. Most recent reports, however, focus heavily on new model architectures. This may bring some gaps when applying GNN in the industrial setup,…

Information Retrieval · Computer Science 2023-11-13 Dang Minh Nguyen , Chenfei Wang , Yan Shen , Yifan Zeng

A recommender system is an important subject in the field of data mining, where the item rating information from users is exploited and processed to make suitable recommendations with all other users. The recommender system creates…

Information Retrieval · Computer Science 2025-06-05 Tin T. Tran , Vaclav Snasel , Loc Tan Nguyen

Neighborhood selection is a widely used method used for estimating the support set of sparse precision matrices, which helps determine the conditional dependence structure in undirected graphical models. However, reporting only point…

Methodology · Statistics 2023-12-29 Yiling Huang , Snigdha Panigrahi , Walter Dempsey

Exploratory information search can challenge users in the formulation of efficacious search queries. Moreover, complex information spaces, such as those managed by Geographical Information Systems, can disorient people, making it difficult…

Information Retrieval · Computer Science 2020-03-26 Noemi Mauro , Liliana Ardissono

Recommender systems play a crucial role in enabling personalized content delivery amidst the challenges of information overload and human mobility. Although conventional methods often rely on interaction matrices or graph-based retrieval,…

Information Retrieval · Computer Science 2025-06-23 Tan Loc Nguyen , Tin T. Tran

Searching for and making decisions about information is becoming increasingly difficult as the amount of information and number of choices increases. Recommendation systems help users find items of interest of a particular type, such as…

Information Retrieval · Computer Science 2011-07-04 M. H. Goker , P. Langley , C. A. Thompson

Sequential recommendation (SR) is traditionally formulated as next-item prediction over a chronological sequence of interacted items. Although recent generative recommendation (GR) methods introduce new machinery, such as semantic IDs,…

Information Retrieval · Computer Science 2026-05-19 Yingyi Zhang , Junyi Li , Yejing Wang , Wenlin Zhang , Xiaowei Qian , Sheng Zhang , Yue Feng , Yichao Wang , Yong Liu , Xiangyu Zhao , Xianneng Li

Learning distributed representations of documents has pushed the state-of-the-art in several natural language processing tasks and was successfully applied to the field of recommender systems recently. In this paper, we propose a novel…

Information Retrieval · Computer Science 2017-11-29 Danijar Hafner , Alexander Immer , Willi Raschkowski , Fabian Windheuser

Recommender systems based on graph neural networks receive increasing research interest due to their excellent ability to learn a variety of side information including social networks. However, previous works usually focus on modeling…

Information Retrieval · Computer Science 2022-02-01 Junfa Lin , Siyuan Chen , Jiahai Wang

We consider the problem of algorithmically recommending items to users on a Yahoo! front page module. Our approach is based on a novel multilevel hierarchical model that we refer to as a User Profile Model with Graphical Lasso (UPG). The…

Applications · Statistics 2011-11-03 Deepak Agarwal , Liang Zhang , Rahul Mazumder

Social tagging, as a novel approach to information organization and discovery, has been widely adopted in many Web2.0 applications. The tags provide a new type of information that can be exploited by recommender systems. Nevertheless, the…

Information Retrieval · Computer Science 2013-10-31 Zhu Zhang , Daniel Zeng , Ahmed Abbasi , Jing Peng

Associating type to locations can be used to enrich maps and can serve a plethora of geospatial applications. An automatic method to do so could make the process less expensive in terms of human labor, and faster to react to changes. In…

Computation and Language · Computer Science 2020-09-21 Elad Kravi , Benny Kimelfeld , Yaron Kanza , Roi Reichart

Conversational recommendation systems (CRSs) use multi-turn interaction to capture user preferences and provide personalized recommendations. A fundamental challenge in CRSs lies in effectively understanding user preferences from…

Information Retrieval · Computer Science 2025-04-30 Xiaolei Wang , Chunxuan Xia , Junyi Li , Fanzhe Meng , Lei Huang , Jinpeng Wang , Wayne Xin Zhao , Ji-Rong Wen