Gen-ichi Taguchi's Contribution to Statistics

Abstract

The author introduces and appreciates original statistical methods proposed by Gen-ichi Taguchi from 1957 to 1977 such as his shrunken estimators, nonparametric inferences to clarify significant differences of probability distributions and unique design of randomized experiments. The author also reviews Dr. Taguchi's classification of input variables to clarify their roles in the de-signed experiments.