包括最小二乘法、SVM、神经网络、1_k近邻法,使用大量的有限元法求解偏微分方程，在matlab环境中自动识别连通区域的大小。- Including the least squares method, the SVM, neural networks, 1 _k neighbor method, Using a large number of finite element method to solve partial differential equations, Automatic iden