Review of binary tournament constraint handling technique in NSGA II for optimal control of combined sewer systems

Abstract

Binary tournament constraint handling technique in Non Sorted Genetic Algorithm II (NSGA II) has both advantages and disadvantages. This constraint handling technique is fairly simple; however, it solves the issues in identifying the penalty functions for multi- objective optimization problems. This paper reviews the constraint handling approach in NSGA II and compares it with an alternative constraint handling approach for optimal control of combined sewer systems. Interesting results are presented and it can be concluded that the alternative constraint handling approach produces better results; however, this alternative constraint handling approach has to be used with adequate care.