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- ItemDetecting ineffective features for pattern recognition(Oberwolfach : Mathematisches Forschungsinstitut Oberwolfach, 2017) Györfi, László; Walk, HarroFor a binary classification problem, the hypothesis testing is studied, that a component of the observation vector is not effective, i.e., that component carries no information for the classification. We introduce nearest neighbor and partitioning estimates of the Bayes error probability, which result in a strongly consistent test.