TY - JOUR
T1 - Improving the quality of Pareto optimal solutions in water distribution network design
AU - Choi, Young Hwan
AU - Jung, Donghwi
AU - Lee, Ho Min
AU - Yoo, Do Guen
AU - Kim, Joong Hoon
N1 - Funding Information:
This work was supported by a grant from the National Research Foundation (NRF) of Korea, funded by the Korean government (MSIP) (No. 2016R1A2A1A05005306).
Publisher Copyright:
© 2017 American Society of Civil Engineers.
PY - 2017/8/1
Y1 - 2017/8/1
N2 - 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).
AB - 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).
UR - http://www.scopus.com/inward/record.url?scp=85019749605&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)WR.1943-5452.0000785
DO - 10.1061/(ASCE)WR.1943-5452.0000785
M3 - Article
AN - SCOPUS:85019749605
SN - 0733-9496
VL - 143
JO - Journal of Water Resources Planning and Management - ASCE
JF - Journal of Water Resources Planning and Management - ASCE
IS - 8
M1 - 04017036
ER -