Supplement Materials for “ Large - scale Linear RankSVM ” Ching -
نویسندگان
چکیده
This document presents some materials not included in the paper. In Section II, we illustrate the direct method for computing l i (w), l − i (w), α + i (w,v) and α − i (w), as well as the approach in Joachims (2006) that is similar to this method. Section III gives a comparison on relative function value, pairwise accuracy and NDCG with respect to the number of (CG) iterations between TRON and the cutting plane method used in TreeRankSVM. The results show that despite of their implementation differences, TRON has better convergence than the cutting plane method. In Section IV we discuss the possibility of solving the dual problem.
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