Event analysis apparatus, an event analysis system, an event analysis method, and an event analysis program

An event analysis method using a computer, comprising:

• collecting an event log data which is the data representing an operation history of an operation by a DCS operator;
• analyzing the event log data collected by the event collector and extracting an operation method based on the operation of the DCS operator and an analysis result data representing an operation intention based on the operation of the DCS operator;
• extracting the analysis result data respectively in every period in the specified multiple periods, and extracting the operation sequence which sorted the analysis result data based on an operation time;
• and
• clustering the operation sequence based on the degree of the similarity between the plurality of operation sequences which are different from each other.

A non-transitory computer readable storage medium that stores a computer program for causing, when executed by a computer, the computer to perform:

• an event collection step of collecting event log data which is the data representing operation history of an operation by a DCS operator;
• an event analysis step of analyzing event log data and extracting an operation method based on the operation of the DCS operator and an analysis result data representing an operation intention based on the operation of the DCS operator;
• an operation sequence extracting step of extracting the analysis result data respectively in every period in the specified multiple periods, and extracting the operation sequence which sorted the analysis result data based on an operation time;
• and
• an operation sequence clustering step of clustering the operation sequence based on the degree of the similarity between the operation sequences.