核主元分析法能充分利用核函数来解决非线性问题，具有很好的非线性逼近能力-Kernel principal component analysis can take advantage of the kernel function to solve nonlinear problems, with good nonlinear approximation ability

傅里叶级数逼近c语言程序源代码 可根据某个函数在2n+1个离散值计算其傅里叶级数-Fourier series approximation c language source code according to a function in 2n+1 discrete values ​ ​ of its Fourier series

利用黄金分割法或二次插值法函数进行数字逼近，使系统达到最优解。-Gold Function