Non-functional requirement prioritization approach based on historical similar project

This paper proposes a new Non functional prioritization technique that uses the weighted average of stakeholder weight and their preferences per aspects. The change in usage count and/or dependencies leads to change in priority of requirements and finally the average change in priority are calculated each time there is change in priority. The new project requirements are mapped with existing similar projects, in case of directly mapped, the priorities of similar projects are modified by adding the average change in priority and then assigned as priority of directly mapped requirement of new project. For different requirements, the requirements are prioritized using the weighted average of stakeholder weight and their preferences along with usage and dependency count. The proposed technique is compared with existing non functional requirement prioritization technique and former technique out performs the latter in terms of accuracy and time of computation due to heavy reliance on values of historical similar projects.