This paper presents a new problem solving environment that can utilize
different forms of resources to approach better solutions in the dist
ribution planning domain. To implement this concept, a design optimiza
tion framework, named Design By Expectation (DBE), is developed. DBE e
xploits the adaptation of Genetic Algorithms (GA's) in searching the o
ptimal solution, and releases the strict requirements for objective fu
nctions and constraints in conventional optimization techniques. One e
xample, street lighting design, is used to demonstrate the applicabili
ty of the proposed approach.