Multi‐Objective Optimization (MOO)
2022
System reliability optimization typically considers multiple reliability-related objectives: reliability, availability, and maintainability (RAM). For hazardous systems, risk attributes must also be considered, i.e. consideration of RAM and Safety criteria (RAMS). Many works convert the multi-objective optimization (MOO) problem into a single-objective one by, e.g. regarding one of the RAMS attributes or cost as the single objective and the other attributes as constraints or by aggregating all attributes into a single objective. This chapter mainly focuses on MOO problems. It covers various topics related to MOO, including MOO problem formulation, method of conversion from MOO problem to single-objective optimization problem, MOO evolutionary algorithms, performance measures and method of selection of the preferred solutions. Finally, the guidelines of implementing and developing MOO methods for solving RAMS+C problems are presented.