The analysis and measurement of current levels of software reuse are necessary to monitor improvements. This paper provides a framework for the derivation of measures of software reuse and introduces several de nitions, attributes, ractions of potentially measurable reuse properties. The framework is applied to the problem of measuring reuse in object oriented systems which support leveraged" reuse through inheritance. I describe the importance of the perspective of the observer when analyzing, measuring, and pro ling reuse. Three perspectives are examined: the server perspective, the client perspective, and the system perspective. Candidate reuse metrics are proposed from each perspective.
James M. Bieman