DERANGEMENT RESTRUCTURING SYSTEM, DERANGEMENT DEVICE, RESTRUCTURING DEVICE, DERANGEMENT RESTRUCTURING METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a derangement restructuring system which makes one of the safety index and the derangement index constant, while improving the other index.SOLUTION: A derangement device 1 includes: an input part for inputting correlated records; and a derangement part in which a maintenance replacement derangement is performed by a predetermined maintenance probability in the case where a deranged attribute value and an attribute value are equal to each other when the attribute value is deranged, and when the deranged attribute value and the attribute value are not equal to each other, both of the values are uniformly selected so that the deranged attribute value for the attribute value is determined. A restructuring device 2 includes: an input part for inputting a cross tabulation for the deranged record; a matrix generation part for generating a transition probability matrix using the maintenance probability and the correlation; and Bayes estimation part for acquiring the estimation value of the cross tabulation for the record by performing the Bayes estimation of the cross tabulation using the transition probability matrix.