JISE


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Journal of Information Science and Engineering, Vol. 38 No. 3, pp. 619-644


A Multi-Dimensional Source Selection Based on Topic Modelling


FATMA ZOHRA LEBIB1,2, HAKIMA MELLAH1
AND ABDELKRIM MEZIANE1
1Information System and Multimedia System Division
Research Center on Scientific and Technical Information
Algiers, 16028 Algeria

2Department of Computer Science
University of Sciences and Technology Houari Boumediene
Algiers, 16111 Algeria
E-mail: {zmatouk; hmellah; ameziane}@mail.cerist.dz


Access to information in multisource environments is facing many problems. One of them is the source selection problem. As more and more sources become available on the internet, how to select the relevant sources that meet the user needs is a big challenge. In this paper, we propose a multi-dimensional source selection approach based on topic modelling, which integrates both the social dimension and the intelligent dimension in order to optimize the source selection according to different user interests. Social tagging data is analyzed to discover relevant topics of user interests and latent relationships between users and sources based on topic modelling. By intelligently exploring a large search space of possible solutions, an (optimal) selection of sources is found using an intelligent method (a genetic algorithm). The proposed approach is evaluated on real data sources. The experimental results demonstrate that the proposed approach outperforms state-of-the-art source selection algorithms.


Keywords: multisource environment, social tagging, source selection, genetic algorithm, LDA

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