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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/15435

Title: Two-probabilities focused combination in recommender systems
Authors: Nguyen, Van-Doan
Huynh, Van-Nam
Keywords: Information fusion
Uncertain reasoning
Dempster-Shafer theory
Recommender systems
Collaborative filtering
Issue Date: 2016-09-20
Publisher: Elsevier
Magazine name: International Journal of Approximate Reasoning
Volume: 80
Start page: 225
End page: 238
DOI: 10.1016/j.ijar.2016.09.005
Abstract: In this paper, we develop a new method, called 2-probabilities focused combination, for combining pieces of evidence of users' preferences in recommender systems based on Dempster-Shafer theory. This method focuses on significant focal elements in focal sets of mass functions only; whereas, the remaining focal elements are considered as noise and then transferred to the whole set element. With the new method, in the systems, users' preferences are represented as special mass functions called 2-probabilities focused mass functions; and for evidence combination, Dempster's rule of combination is applied to combine 2-probabilities focused functions, and the combination results are transformed into corresponding 2-probabilities focused mass functions. To evaluate as well as demonstrating the advantage of the new method, a baseline method called 2-points focused combination is selected for performance comparison in a range of experiments on two recommender systems using Movielens and Flixster data sets.
Rights: Copyright (C)2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license (CC BY-NC-ND 4.0). [http://creativecommons.org/licenses/by-nc-nd/4.0/] NOTICE: This is the author’s version of a work accepted for publication by Elsevier. Changes resulting from the publishing process, including peer review, editing, corrections, structural formatting and other quality control mechanisms, may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Van-Doan Nguyen, Van-Nam Huynh, International Journal of Approximate Reasoning , 80, 2016, 225-238, http://dx.doi.org/10.1016/j.ijar.2016.09.005
URI: http://hdl.handle.net/10119/15435
Material Type: author
Appears in Collections:a10-1. 雑誌掲載論文 (Journal Articles)

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