As the application of computer technology continues to proliferate and diversify, the identification and understanding of application domains is becoming increasingly important to software development methodologies.Domain analysis techniques have been developed to accumulate and formalize the knowledge necessary for successful software reuse.These techniques have been shown to be useful, but suffer from defining the domain too restrictively, burying important relationships deep in domain taxonomies, and prohibiting flexible identification of domains with common issues.Techniques are needed that dynamically detect recurring patterns of activities in development projects, This paper presents a method for developing and refining the knowledge and experience accumulated by a development organization so it can learn from previous efforts.A case-based repository of project experiences supports the re-use and refinement of domain knowledge to reduce duplicate effort, build on successful efforts, and avoid repeating mistakes in the process of building quality software systems.