We analyze combinatorial optimization problems with ordinal, i.e., non-additive, objective functions that assign categories (like good, medium and bad) rather than cost coefficients to the elements of feasible solutions. review different optimality concepts for ordinal discuss their similarities differences. then focus on two prevalent are shown be equivalent. Our main lies investigation a bije...

A tremendous amount of work has been done in the recent years optimization input parameters, however, current techniques can only provide a single optimal process parameter combination. Although alternative have developed to multiple solutions with identical objective values, these low efficiency when searching for solutions. In this paper, two-stage filter split-optimization approach is propos...

<p style='text-indent:20px;'>Compressive speech enhancement makes use of the sparseness and non-sparseness noise in time-frequency representation to perform enhancement. However, reconstructing sparsest output may not necessarily translate a good enhanced signal as distortion be at risk. This paper proposes two level optimization approach incorporate objective quality measures compressive...

arguably, the natural gas transmission pipeline infrastructure in iran represents one of the largest andmost complex mechanical systems in the world. the optimization of large gas trunk lines known asigat results in reduced fuel consumption or higher capability and improves pipeline operation. in thecurrent study, a single-objective optimization was conducted for khormoj compressor station on t...

vendor managed inventory is a continuous replenishment program that is designed to provide major cost saving benefits for both vendors and retailers. previous research on this area mainly included single objective optimization models where the objective is to minimize the total supply chain costs or to maximize the total supply chain benefits. this paper presents a bi-objective mathematical mod...