共轭梯度法解线性方程组，一般是对对称正定的方程，对一般方程也可以-The conjugate gradient method for solving linear equations, the general is symmetric and positive definite equation, also the general equation

基于非线性主成分分析的自适应变步长盲源分离算法-Based on the nonlinear principal component analysis of adaptive variable step length blind source separation algorithm is proposed