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Title: RankSVR: Can preference data help regression?
Authors: Yu, H.
Kim, S.
Na, S. 
Keywords: Ranking
Issue Date: 2010
Citation: Yu, H.,Kim, S.,Na, S. (2010). RankSVR: Can preference data help regression?. International Conference on Information and Knowledge Management, Proceedings : 879-888. ScholarBank@NUS Repository.
Abstract: In some regression applications (e.g., an automatic movie scoring system), a large number of ranking data is available in addition to the original regression data. This paper studies whether and how the ranking data can improve the accuracy of regression task. In particular, this paper first proposes an extension of SVR (Support Vector Regression), RankSVR, which incorporates ranking constraints in the learning of regression function. Second, this paper proposes novel sampling methods for RankSVR, which selectively choose samples of ranking data for training of regression functions in order to maximize the performance of RankSVR. While it is relatively easier to acquire ranking data than regression data, incorporating all the ranking data in the learning of regression doest not always generate the best output. Moreoever, adding too many ranking constraints into the regression problem substantially lengthens the training time. Our proposed sampling methods find the ranking samples that maximize the regression performance. Experimental results on synthetic and real data sets show that, when the ranking data is additionally available, RankSVR significantly performs better than SVR by utilizing ranking constraints in the learning of regression, and also show that our sampling methods improve the RankSVR performance better than the random sampling. © 2010 ACM.
Source Title: International Conference on Information and Knowledge Management, Proceedings
ISBN: 9781450300995
DOI: 10.1145/1871437.1871550
Appears in Collections:Staff Publications

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