SPEM: A Software Pattern Evaluation Method

Abstract

Software architecture makes extensive use of many software patterns. The decision on which pattern to select is complex and architects struggle to make well-advised choices. Decisions are often solely made on the experience of one architect, lacking quantitative results to support the decision outcome. There is a need for a more structured evaluation of patterns, supporting adequate decision making. This paper proposes a Software Pattern Evaluation Method (SPEM), that enables the quantification of different pattern attributes by using structured focus groups. The method is formed using a design science approach in which an initial method was created using expert interviews, which was later refined using several evaluation sessions. SPEM helps software producing companies in structuring their decision making and selecting the most appropriate patterns. Also, SPEM helps in enriching pattern documentation by providing a way to add quantitative information to pattern descriptions.