Functional matching in COTS-based development context

Requirements engineering in the context of off-the-shelf component-based system development is a difficult issue. Most actual approaches are not requirements-driven, which does not allow to gain a great customer acceptance. Otherwise, they have difficulties getting a natural matching between customer requirements and component features, which does not facilitate the user involvement. The paper extends our former thoughts on an approach that is requirements-driven and is featured by a systematic way-of-working for system requirements elicitation, COTS candidate products' features discovery, and last but not least, a rigorous reasoning on the matching matter. The overall process is helped with map usage, the new representation system that we believe useful for a natural reasoning.