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2007
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Rank Aggregation for Similar Items

8 years 11 months ago
Rank Aggregation for Similar Items
The problem of combining the ranked preferences of many experts is an old and surprisingly deep problem that has gained renewed importance in many machine learning, data mining, and information retrieval applications. Effective rank aggregation becomes difficult in real-world situations in which the rankings are noisy, incomplete, or even disjoint. We address these difficulties by extending several standard methods of rank aggregation to consider similarity between items in the various ranked lists, in addition to their rankings. The intuition is that similar items should receive similar rankings, given an appropriate measure of similarity for the domain of interest. In this paper, we propose several algorithms for merging ranked lists of items with defined similarity. We establish evaluation criteria for these algorithms by extending previous definitions of distance between ranked lists to include the role of similarity between items. Finally, we test these new methods on both syn...
D. Sculley
Added 30 Oct 2010
Updated 30 Oct 2010
Type Conference
Year 2007
Where SDM
Authors D. Sculley
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