An optimization calculation apparatus and an optimization calculation method are provided. The optimization calculation apparatus may comprise an algorithm module obtaining a plurality of first solutions (S1) from a plurality of input data, obtaining second solutions (S2) from the first solutions (S1) and repeating the process to derive an optimal solution (Sm), and a similarity determination module connected to the algorithm module and computing a similarity of ith solutions in order to obtain (i+1)th solutions (1≤i≤m−1).
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