用c语言写的共轭梯度法程序，程序较为简单，不过运算速度快，准确率高-C language by the conjugate gradient method procedures, the procedures are more straightforward, but computing speed, high accuracy

共轭梯度法的经典之作,在支持向量机凸规划中经常用到。-Conjugate gradient method of classic convex programming in support vector machines are often used.

利用稀疏矩阵的共轭梯度法求解方程,经实际检验效果很理想-solve equation with sparse conjugate gradient method