An Application of the MT System to Pattern Recognition

Abstract

The Mahalanobis-Taguchi（MT）system offers a useful approach to pattern recognition because it provides a method of evaluating results in terms of numerical values. The Recognition Taguchi （RT） method in particular offers extremely high applicability because it is rarely limited by the number of terms encountered in the analysis: it reduces them all to just two variables, scatter and sensitivity. The principle behind the RT method, which uses these two indices to summarize multiple terms, could be considered to derive from the S/N ratio of transferability. This article begins by summarizing the concept of ‘pattern’, then describes the function of transferability and its relation to the MT system. Next it focuses on the waveforms output by high performance liquid chromatography （HPLC） analyzers that express the quantities of medicinal components by means of waveforms, and employs the RT method to evaluate component inclusion from these waveforms. The digital standard S/N ratio was used to compare their recognizability with their recognizability by matrix inversion in the MT system.