Requirements Reuse for Exploring Stakeholder Needs

Abstract

This tutorial presents and compares two different approaches to requirements reuse. The first approach deals with requirements reuse and reusability using feature modelling. The second approach deals with requirements reuse and reusability in the context of case-based reasoning. Both approaches have different key properties and trade-offs between the costs of making software artefacts reusable and the benefits of reusing them. To aid large-scale development, we have proposed a Feature-Similarity Model, which draws on both approaches to facilitate discovering requirements relationships using similarity metrics. A FeatureSimilarity Model also helps with exploring stakeholder needs, since new requirements can be introduced first into a case base and then gradually included into a product line representation.