A Second-Order Finite-Difference Method for Derivative-Free Optimization

Figure 1

(a) The comparison results of the number of iterations of forward-difference with DEO-TRNS and NOMAD. (b) The comparison results of CPU time of forward-difference with DEO-TRNS and NOMAD. (c): The comparison results of the number of iterations of central-difference with DEO-TRNS and NOMAD. (d) The comparison results of CPU time of central-difference with DEO-TRNS and NOMAD.

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