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Requirements engineering (RE) addresses the first software development step and lays the foundation for a successful system. Consequently, ability to identify problems and suggestions for improvements in the RE process opens up significant potential for increasing the success of software projects. Since RE process is naturally collaborative in nature, the intensiveness from both knowledge and human perspectives opens up the problem of decision making on requirements that can be facilitated by requirements prioritisation. In this regard, the paper opined the need for requirements prioritization techniques that will help the developers to obtain consensus among stakeholders using a suitable technique. In particular, the paper proposed a RE process model using Delphi technique. The Delphi technique was suggested in this paper to facilitate and enhance the process of requirements prioritisation in a multilevel prioritisation dimension. Therefore, the proposed model on implementation will contribute to the formulation of an interactive framework for requirements prioritisation to produce a requirement ordering which complies with the existing priorities.

A Proposed Process Model for Requirements Engineering using Delphi Techniques for Prioritisation