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2009 WRI World Congress on Computer Science and Information Engineering
Hill Climbing for Diversity Retrieval
Los Angeles, California USA
March 31-April 02
ISBN: 978-0-7695-3507-4
Case-based recommender systems have been widely applied in suggesting products that are most similar to current user's query. By prioritizing similarity during a case-based approach may degrade the quality of the retrieval results. There have been a number of attempts to increase retrieval diversity. However, there is a trade-off between similarity and diversity. The improvements in diversity may lead to the loss of similarity. In this paper, we propose a new retrieval strategy based on the random-restart hill-climbing algorithm which optimizes the trade-off between similarity and diversity. Experimental results show that the proposed algorithm can achieve a better overall quality than other approaches.
Index Terms:
Case-Based Reasoning, Hill Climbing, Diversity Retrieval
Citation:
Chein-Shung Hwang, Show-Fen Lin, "Hill Climbing for Diversity Retrieval," csie, vol. 5, pp.154-158, 2009 WRI World Congress on Computer Science and Information Engineering, 2009
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