An Integrated Decision-Making Framework Based on Many-Objective Brain Storming Optimization for Urban Drainage System Design

Many cities around the world face the flooding management problems as extreme rainfall events have become more frequent. It’s of great practical significance to design an effective urban drainage system (UDS) to improve the stormwater runoff quality. An integrated decision-making analysis framework based on many-objective brain storm optimization is proposed to make the optimal design of UDS. Firstly, a generic mathematical model is presented considering five objectives simultaneously. Secondly, an effective many-objective brain storm optimization based on local region dominance is designed as the solver of the model and a set of Pareto-optimal solutions are obtained. Thirdly, two kinds of multi-attribute decision analysis methods are introduced to rank the Pareto-optimal solutions. Fourthly, the comparison experiments of a case study with three multi-objective swarm intelligence algorithms show the promising performance of the integrated decision-making framework and the corresponding optimization algorithm.