【摘要】 针对大型法方程和误差方程解算问题,导出了稀疏对称正定矩阵基于Cholesky分解的非零结构,可以预先确定下三角矩阵中非零元素的位置和个数,从而可预先分配其存储空间。对其后的数值计算,只需按照已安排好的非零元素的位置进行计算,即可得到数值解。更多还原

【Abstract】 Aiming at the difficulties of solving largescale normal equation and error equation, the nonzero structure decomposition of symmetric matrices is introduced, thus the seats and numbers of nonzero elements of triangular matrix would be determined, the store places would be distributed in advance, and the numerical solution can be calculated on the seats of nonzero elements.更多还原