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Corrected Schaffer function n°4 ... see http://infinity77.net/global_optimization/test_functions_nd_S.html |
Better approximation for Styblinski-Tang function |
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|| [[File:Styblinski-Tang function.pdf|200px|Styblinski-Tang function]]
|| <math>f(\boldsymbol{x}) = \frac{\sum_{i=1}^{n} x_{i}^{4} - 16x_{i}^{2} + 5x_{i}}{2}</math>
|| <math>-39.16617n < f\left(\underbrace{-2.903534, \ldots, -2.903534}_{(n) \text{ times}} \right)
|| <math>-5\le x_{i} \le 5</math>, <math>1\le i \le n</math>.
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