TIME SERIES DATA PROCESSOR

摘要

PROBLEM TO BE SOLVED: To provide a technique for recognizing a subtle difference between time series data with few differences apparently therebetween. SOLUTION: A feature data extraction part extracts extreme data 211 from the time series data 201. A return map construction part constructs a return map 202 from two pieces of adjacent extreme data (Xi, Xi+1) on a time series. A coordinate transformation part transforms the return map 202 to a fan-shaped basic pattern 210. A kaleidoscope pattern generation part generates a kaleidoscope pattern by carrying out rotating operation and mirror surface image operation to the basic pattern 210 on kaleidoscope coordinates 204. COPYRIGHT: (C)2006,JPO&NCIPI