Time series rule extraction apparatus, time-series rules extraction method and time series rule extraction program

摘要

PROBLEM TO BE SOLVED: To extract a highly accurate rule.SOLUTION: A time series rule extraction device includes: a creation part, a detection part, an application part, and an extraction part. The creation part is configured to, on the basis of time series data in which the attributes and result attributes of systems are associated with each other in each time, create a plurality of rule items expressed with the attributes and the values of the attributes and the range of time. The detection part is configured to detect the combination of the rule items satisfying an inclusive relation that true systems in the rule items as slaves are also true in the rule item as a master by referring to the values of the plurality of rule items. The application part is configured to apply identification information of the systems which are true in the salves in the detected combination of the rule items to the salves to apply the identification information of the systems which are true to each rule item. The extraction part is configured to create the combination of one or two or more rule items, find a sum set of the systems applied to the rule items included in the combination and the salves, and extract the combination of the rule items such that the number of the systems included in the found sum set and/or the ratio of the systems having predetermined result attributes among the systems falls within a predetermined range.