Superstructure optimization algorithmic methods

Watson, 1968 Rudd, 1968 Masso and Rudd, 1969). Algorithmic methods for selecting the optimal configuration from a given superstructure also began to be developed through the use of direct search methods for continuous variables (Umeda et al, 1972 Ichikawa and Fan, 1973) as well as branch and bound search methods (Lee et al, 1970). 

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