Performance Analysis of Hierarchical Process Model

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Each organisation has a business process to achieve organisational goals by carrying out every activity in the business process. Each activity contains information about useful human resources, time, etc. Performance analysis is the process of evaluating the performance of a process model in the business process in comparison to the goal, which was to be achieved using an event log. Using performance analysis, the bottleneck that happened in a process model is discovered. The existing researches do performance analysis on a bottom-level process model. This research improves existing performance analysis by analysing the hierarchical process model, which includes the top-level process model and bottom-level process model. The top-level process model represents a process model that contains events as the representation of a sub-processes, a group of events in the bottom-level process model. Not only provides a performance analysis, but this research also proposes a method for generating an event log of the top-level process model and an event log of bottom-level process model as the input of performance analysis automatically. The proposed method defines the double timestamp of events of the top-level process model based on the timestamp of events of the bottom-level process model. The experiment shows that not all top-level events which contain bottom-level events. The event in the top-level process model is bottleneck if the amount of its bottom-level activities that are identified as bottleneck is higher than those that are not identified as bottleneck. It is because bottleneck is identified from the total of the waiting time and the waiting time of the activity in the top-level process model is the summation of all activity in the bottom-level process model.