This paper presents a procedure for automatically drawing directed graphs. Our system, CG, uses a unique clan-based graph decomposition to determine intrinsic substructures (clans) in the graph and to produce a parse tree. The tree is given attributes that specify the node layout. CG then uses tree properties with the addition of " routing nodes " to route… (More)
Evolutionary algorithms (EAs) are search procedures based on natural selection . They have been successfully applied to a wide variety of optimization problems . Particle Swarm Optimization (PSO) [1,7] is a new type of evolutionary paradigm that has been successfully used to solve a number of single objective optimization problems (SOPs). However, to… (More)
This paper presents a method for test scenario generation based on formal specifications and usage profiles. It is a major component of a framework for testing object-oriented programs. In this framework, the requirements of a software system are formally specified. The anticipated application of the system is expressed in a usage profile, which is a state… (More)
Space is a hazardous environment for both man and machine and to explore such a terrain a rugged, yet easily implementable, platform is needed.