Time series data calculation method, anomaly detection method, standard time-series data calculation apparatus, abnormality detection apparatus, standard time-series data calculation program, and anomaly detection program

摘要

PPROBLEM TO BE SOLVED: To provide a standard time series data calculation method, a standard time series data calculation device, and a standard time series data calculation program which calculate standard time series data representing a normal state, and to provide an abnormality detection method, an abnormality detection device, and an abnormality detection program which use the standard time series data to detect an abnormality. PSOLUTION: The standard time series data calculation method includes: a data acquisition step of acquiring a plurality of pieces of time series data about a plurality of variables in one system; a data normalization step of generating a plurality of pieces of normalized time series data from the plurality of pieces of time series data; a warping path calculation step of obtaining a warping path by selecting masses on the basis of a distance in a DTW description using two of the plurality of pieces of normalized time series data generated in the data normalization step; and a standard time series data calculation step of calculating standard time series data comprising time-series sets of a plurality of average values per mass on the warping path. PCOPYRIGHT: (C)2011,JPO&INPIT