Abstract
A design pattern is a generic solution to a recurring problem in a given design context [1]. The use of design patterns has many known benefits to the design process. However, since it is the task of a human to instantiate patterns within designs, it is important to assess whether or not this has been done correctly. This assessment is difficult because the conformance checking requires knowledge of design patterns in detail.This paper describes the assessment of pattern-based designs in Unified Modeling Language (UML) for their conformance to the corresponding design patterns. We developed an object-oriented design technique to specify design patterns and their instances in (UML) Profile. We then developed an algorithm and assessment tool for pattern-based design conformance by comparing UML stereotype names. This assessment tool discovers design pattern defects such as design omission and incorrect fact, which are introduced in pattern-based designs when they are instantiated or maintained.
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