PRODUCTION FACILITY MONITORING DEVICE, PRODUCTION FACILITY MONITORING METHOD, AND PRODUCTION FACILITY MONITORING PROGRAM

摘要

In order to accurately determine the degree of malfunctioning of a production facility on the basis of log data, a learning unit (44) learns a classification rule for classifying whether the production facility is in a normal or abnormal state on the basis of text feature quantities (for example, a first primary component and a second primary component) that are determined from the quantities of text included in a plurality of sets of log data obtained in a predetermined process of the production facility, said learning being based on the text feature quantities and production history information about the production facility. Further, an extraction unit (46) extracts a text feature quantity from log data to be monitored that was obtained in the predetermined process of the production facility, and a determination unit (48) determines whether the production facility was in a normal or abnormal state when the log data to be monitored was obtained, on the basis of the extracted text feature quantity and the classification rule.