格里旺克函数维基百科,自由的 encyclopedia 格里旺克函数(Griewank function)是数学上常用于测试优化程序效率的函数,定义如下:[1] G ( x 1 , x 2 , ⋯ , x n ) = 1 + 1 4000 ∑ 1 n x i 2 − ∏ i = 1 n c o s ( x i ) ( i ) {\displaystyle G(x_{1},x_{2},\cdots ,x_{n})=1+{\frac {1}{4000}}\sum _{1}^{n}x_{i}^{2}-\prod _{i=1}^{n}cos({\frac {x_{i})}{{\sqrt {(}}i)}}}
格里旺克函数(Griewank function)是数学上常用于测试优化程序效率的函数,定义如下:[1] G ( x 1 , x 2 , ⋯ , x n ) = 1 + 1 4000 ∑ 1 n x i 2 − ∏ i = 1 n c o s ( x i ) ( i ) {\displaystyle G(x_{1},x_{2},\cdots ,x_{n})=1+{\frac {1}{4000}}\sum _{1}^{n}x_{i}^{2}-\prod _{i=1}^{n}cos({\frac {x_{i})}{{\sqrt {(}}i)}}}