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Figure 11: Mean of the evaluation values of population in each generation. The horizontal axis represents the generations and the vertical axis is the mean of the evaluation values of population after 100 trials. The bar represents the standard error. The results of the proposed method are depicted by the solid red lines and those of the conventional method by the dotted blue lines. The graphs in the same row correspond to landscapes of equal dimensions and those in the same column correspond to landscapes with the same number of peaks.