The choice of a sample size of 20S in step 2 is a generally accepted size based on previous testing and experience related to the generation of widely dispersed weighting vectors for multicriteria problems. In this implementation, we use the LAMBDA program in the ADBASE multiple objective programming package to generate the 20S weighting vectors.The procedure for filtering the 20S weighting vectors down to 2p in step 2, and filttering the 2p nondominated criterion