DEPENDENCY GRAPH CREATION DEVICE, FAILURE OCCURRENCE LOCATION DIAGNOSIS SYSTEM, FAILURE OCCURRENCE LOCATION DIAGNOSIS METHOD AND COMPUTER PROGRAM

摘要

PROBLEM TO BE SOLVED: To increase accuracy of diagnosis at a failure occurrence location of a portable terminal by corresponding to a change of DG (Dependency Graph) together with a change of time.SOLUTION: A DG estimation server 1 stores network logs that are output by components used by a portable terminal 3 and, on the basis of co-occurrence relation between network logs of the components, creates DG that shows dependency of operation between components used by the portable terminal 3 and the use time. A DG management database 2 stores DG associated with the portable terminal 3.