Toward a Functional Requirements Prioritization with Early Mutation Testing

Researchers have proposed a number of prioritization techniques to help decision makers select an optimal combination of (non-) functional requirements to implement. [Problem] However, most of them are defined based on an ordinal or nominal scale, which are not reliable because they are limited to simple operations of ranked or ordered requirements. [Principal ideas] We argue that the importance of certain requirements could be determined by their criticality level, which can be assessed using a ratio scale. [Contribution]The main contribution of the paper is the new strategy proposed for prioritizing functional requirements, using early mutation testing and dependency analysis.