Argumentation-based Methodology for Goal-oriented Requirements Language (GRL)

Goal-oriented Requirements Language (GRL) aims to cap- ture goals and non-functional requirements of stakeholders and analyzing alternative solutions for realizing these goals. GRL also documents the rationale behind selecting certain goals or alternatives. However, it does not have any means to document and trace back all of the arguments that occur during the stakeholder's discussion process. To address this, we have developed the RationalGRL framework. RationalGRL combines techniques for formal argumentation from articial intelligence with goal modeling in GRL. However, we did not specify how practitioners can ac- tually use this framework. In this paper we discuss the methodology for RationalGRL, which consists of two processes, goal modeling and argu- mentation, that can be done interchangeably. We motivate our approach with an example