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New Information Technology Study Findings Recently Were Reported by Researchers at University of Ioannina (Diverse Set Selection Over Dynamic Data)

July 29, 2014



By a News Reporter-Staff News Editor at Information Technology Newsweekly -- Research findings on Information Technology are discussed in a new report. According to news reporting from Ioannina, Greece, by VerticalNews journalists, research stated, "Result diversification has recently attracted considerable attention as a means of increasing user satisfaction in recommender systems, as well as in web and database search. In this paper, we focus on the problem of selecting the k-most diverse items from a result set."

The news correspondents obtained a quote from the research from the University of Ioannina, "Whereas previous research has mainly considered the static version of the problem, in this paper, we exploit the dynamic case in which the result set changes over time, as for example, in the case of notification services. We define the CONTINUOUS k-DIVERSITY PROBLEM along with appropriate constraints that enforce continuity requirements on the diversified results. Our proposed approach is based on cover trees and supports dynamic item insertion and deletion. The diversification problem is in general NP-hard; we provide theoretical bounds that characterize the quality of our cover tree solution with respect to the optimal one. Since results are often associated with a relevance score, we extend our approach to account for relevance."

According to the news reporters, the research concluded: "Finally, we report experimental results concerning the efficiency and effectiveness of our approach on a variety of real and synthetic datasets."

For more information on this research see: Diverse Set Selection Over Dynamic Data. IEEE Transactions on Knowledge and Data Engineering, 2014;26(5):1102-1116. IEEE Transactions on Knowledge and Data Engineering can be contacted at: Ieee Computer Soc, 10662 Los Vaqueros Circle, PO Box 3014, Los Alamitos, CA 90720-1314, USA. (Institute of Electrical and Electronics Engineers - www.ieee.org/; IEEE Transactions on Knowledge and Data Engineering - ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=69)

Our news journalists report that additional information may be obtained by contacting M. Drosou, University of Ioannina, Dept. of Comp Sci, GR-45110 Ioannina, Greece.

Keywords for this news article include: Ioannina, Greece, Europe, Information Technology

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Information Technology Newsweekly


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