期刊
ENVIRONMENTAL MODELLING & SOFTWARE
卷 148, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envsoft.2021.105272
关键词
Multi-objective optimization; Surrogate model; Constrained hybrid problem; NSGA-II; MO-ASMO
类别
资金
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA2006040104]
- National Natural Science Foundation of China [42101046, 51979004]
- China Postdoctoral Science Foundation [2019M661714]
Many multi-objective optimization problems in integrated environmental modeling and management involve complex constraints and different types of decision variables. This study presents an algorithm called MO-ASMOCH that can effectively solve these hybrid problems by using fewer model evaluations and achieving high-quality solutions.
Many multi-objective optimization problems in integrated environmental modelling and management involve not only continuous decision variables but also variables like integers and/or discrete variables. Furthermore, the optimization problems are often subject to various constraints. Solving this kind of constrained hybrid problems usually requires a huge number of model evaluations that can be computationally expensive. This study presents an algorithm known as multi-objective adaptive surrogate modelling-based optimization for constrained hybrid problems (MO-ASMOCH). It incorporates several evolutionary operators to handle different types of decision variables and uses a classification surrogate model to deal with model constraints. MO-ASMOCH was evaluated against the widely used NSGA-II method on three engineering design problems and three water distribution system design problems with up to 30 dimensions. The results showed that MO-ASMOCH is able to obtain nondominated solutions of similar quality as that of NSGA-II using much fewer model evaluations.
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