Metrics for the Case Management Modeling and Notation (CMMN) Specification

Abstract

The Case Management Modeling and Notation (CMMN) speci cation, published by the Object Management Group (OMG) in 2014, describes a declarative style for modeling business processes. The declarative nature of CMMN is in- tended to supplement the procedural style of the Business Process Modeling and Notation (BPMN). Although multi- ple metrics have been developed and veri ed for BPMN, the authors are not aware of any metrics developed for CMMN. Being a relative new process speci cation the understanding of complexity metrics for CMMN ought to be bene cial for practitioners and researchers by providing a way to compare case management models. This study provides a formal description of CMMN and three metrics are de ned, namely size, length, and complex- ity. The metrics are theoretically validated using the formal framework for software measurements de ned by Briand et al. and the complexity metric is further validated using Weyuker's properties for software complexity measures.