OUTLIER DETECTING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an outlier detecting method capable of detecting an outlier even if data to be inspected do not follow normal distribution. SOLUTION: The outlier detecting method of time series data having periodicity has a factor analyzing procedure for performing a factor analysis while considering that n items of data are data for a variable item in one period with an aggregation of data of one period as one sample; and an outlier determining procedure for defining a distance between samples with a factor score calculated by the factor analyzing procedure as an index indicating similarity between data, and determining whether or not it is an outlier on the basis of the distance. COPYRIGHT: (C)2005,JPO&NCIPI