包括最小二乘法、SVM、神经网络、1_k近邻法,基于人工神经网络的常用数字信号调制，可实现对二维数据的聚类，基于互功率谱的时延估计，复化三点Gauss-lengend公式求pi，最小均方误差（MMSE）的算法。- Including the least squares method, the SVM, neural networks, 1 _k neighbor method, The commonly used digital signal modulation based on artificial neural network, Can realize the two-dimensional data clustering, Based on the time delay estimation of power spectrum, Complex of three-point Gauss-lengend the Formula pi, Minimum mean square error (MMSE) algorithm.