Combining Two Modelling Approaches: GQM and KAOS in an Open Source Project

Askarbekuly, Nursultan; Sadovykh, Andrey; Mazzara, Manuel

GQM is a software metrics method that produces meaningful and appropriate measurement metrics based on the specific goals of an organisation. KAOS goal modelling is a software engineering approach that allows to identify high level goals of an organisation, refine and expand them into lower-level more concrete goals and assign them to specific system agents. The two approaches can be combined, such that the goal modelling is used to derive specific goals rooted in the organisational context, policies and strategies of an organisation. The GQM, in turn, utilises the derived specific goals to produce appropriate and meaningful metrics that can be used to obtain valuable insights and track the state and progress of the formulated goals. Moreover, both models can be presented within a single diagram, thus providing an expressive and concise overview of the systems goals, actors and measurements. The suggested combination is then applied in the context of an open source project, followed by the discussion on potential benefits and drawbacks of using the two approaches.