A density ratio approach to two-sample test (パターン認識・メディア理解)

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概要

• 論文の詳細を見る

• The goal of the two-sample test (a.k.a. the homogeneity test) is, given two sets of samples, to judge whether the probability distributions behind the samples are the same or not. In this paper, we propose a novel non-parametric method of two-sample test based on a least-squares density ratio estimator. Through various experiments, we show that the proposed method overall produces smaller type-II error (i.e., the rate of judging the two distributions to be the same when they are actually different) than a state-of-the-art method, with slightly larger type-I error (i.e., the rate of judging the two distributions to be different when they are actually the same).

• 社団法人電子情報通信学会の論文
• 2010-08-29

著者

• Sugiyama Masashi

  Tokyo Inst. Of Technol.

• Kimura Manabu

  Tokyo Institute Of Technology

• KANAMORI Takafumi

  Nagoya University

• Suzuki Taiji

  University of Tokyo

• Itoh Yuta

  Tokyo Institute of Technology

• Kimura Manabu

  Tokyo Inst. Of Technol.

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