| 摘要 |
PROBLEM TO BE SOLVED: To provide an operation monitoring device, a method for estimating a causal event in the operation monitoring device, and an information communication network system which can estimate or determine a causal event from a massive observed events and also can properly notify an operator or watchman of a change or deviation in an operating state, and which further can support the operator or watchman in making decision.SOLUTION: An operation monitoring device 600 estimates a cause for which first and second observation data observed by a monitored device have been obtained. The operation monitoring device 600 comprises: an observed event acceptance processing unit 111 which accepts the first and the second observation data transmitted thereto; an observed event extraction unit 121 which extracts the first observation data among the accepted first and second observation data on the basis of a probability with which the cause would occur; a causal event determination processing unit 131 which estimates the cause on the basis of the extracted first observation data; and a cause notification processing unit 133 which outputs data indicating the estimated cause. |
