Applying fuzzy preference relation for requirements prioritization in goal oriented requirements elicitation process

摘要

Goal oriented requirements elicitation processes are used to identify the requirements of software according to the need of stakeholders. A system may have thousands of requirements and it is difficult to prioritize such a large number of requirements when several stakeholders participate in requirements elicitation process. In literature, we identify that existing goal oriented requirements elicitation processes like KAOS, i~*, AGORA do not support to prioritize the requirements when stakeholder's preferences are in the form of linguistic variable and multi-criteria decision making approach is used in requirements elicitation process. Therefore, to address this issue, we present a method for prioritization of requirements using fuzzy based approach in goal oriented requirements elicitation process by combining α-level weighted F-preference relation and extent fuzzy analytic hierarchy process in group decision making process; and then we use binary tree sort method to get the prioritized list of requirements. Finally, the utilization of the proposed approach is demonstrated with the help of an example.