We develop an imperative calculus that provides a formal model for both single and mixin inheritance. By introducing classes and mixins as the basic object-oriented constructs in a...
SOFL is a formal language and method for system specification and design. As a language it is an integration of Petri nets, Data Flow Diagrams, and VDM-SL. As a method it is a com...
Abstract. A hierarchy of six important structures from abstract algebra (groups, rings, fields etc.) is introduced as Gofer class definitions and laws about them. Many instance d...
Relationships between objects are almost as important to designs as the objects themselves. Most programming languages do not support relationships well, so programmers must imple...
In this paper we describe our work on representing and constructing ontologies for breast mammography, which is part of planned set of comprehensive breast imaging and pathology o...