Scholarly Articles
Improving the Quality of Pareto Optimal Solutions in Water Distribution Network Designs,
Journals
ASCE
Author
노준우,최영환,정동휘,이호민,김중훈
Publication Date
20170801
This paper proposes five methods for improving the quality of Pareto optimal solutions of multiobjective optimal water distribution
network (WDN) design problems: (1) three warm initial solution methods, (2) the postoptimization method, and (3) the guided-search
method. The five methods were demonstrated through resilience-based design of the Hanoi network. The guided-search method, considering
the reasonable range of decision variables, was identified as the best method with respect to the nondomination and diversity of the obtained
Pareto solutions. Then, the effect of considering known initial solutions (e.g., least-cost solutions obtained from single-objective optimal
design) on the final Pareto solution quality was investigated using the guided-search method. Finally, the guided-search method was compared
with five multiobjective optimization algorithms widely used in the WDN research community through the resilience-based design of
well-known benchmark WDNs (i.e., two-loop, Hanoi, Balerma, and P-city).
network (WDN) design problems: (1) three warm initial solution methods, (2) the postoptimization method, and (3) the guided-search
method. The five methods were demonstrated through resilience-based design of the Hanoi network. The guided-search method, considering
the reasonable range of decision variables, was identified as the best method with respect to the nondomination and diversity of the obtained
Pareto solutions. Then, the effect of considering known initial solutions (e.g., least-cost solutions obtained from single-objective optimal
design) on the final Pareto solution quality was investigated using the guided-search method. Finally, the guided-search method was compared
with five multiobjective optimization algorithms widely used in the WDN research community through the resilience-based design of
well-known benchmark WDNs (i.e., two-loop, Hanoi, Balerma, and P-city).