Abstract: A method includes obtaining, from an event log, first text of an alarm associated with an industrial process in a process control system, and processing the first text to obtain first key terms. The method also includes obtaining, from the event log, second text of an operator response, and processing the second text to obtain second key terms. The method further includes filtering and segmenting at least one of the first key terms and the second key terms. The method also includes performing text matching on the first key terms and the second key terms to identify a correlation between the first text and the second text. In addition, the method includes storing the first text, the second text, and the correlation between the first text and the second text in a data store.

Abstract: A method includes obtaining, from an event log, first text of an alarm associated with an industrial process in a process control system, and processing the first text to obtain first key terms. The method also includes obtaining, from the event log, second text of an operator response, and processing the second text to obtain second key terms. The method further includes filtering and segmenting at least one of the first key terms and the second key terms. The method also includes performing text matching on the first key terms and the second key terms to identify a correlation between the first text and the second text. In addition, the method includes storing the first text, the second text, and the correlation between the first text and the second text in a data store.

Abstract: A method includes obtaining history trend data of a process variable. The method also includes determining one or more change points in a mean value of the process variable for a predetermined time interval in the history trend data using change point analysis. The method further includes detecting one or more significant change points that occur in the mean value of the process variable during the predetermined time interval. In addition, the method includes, for each detected significant change point, providing a notification to a user of the significant change point, receiving information from the user about a cause of the significant change point and generating an event in a log. The event is based on the significant change point and the information received from the user about the significant change point.