positive-definiteness of a huge sparse matrix

4 次查看(过去 30 天)
I want to determine the positive-definiteness of a huge sparse matrix (N^2,N^2) with nonzeros on the 9 off-diagnols, where N is the larger the better. I am using eigs(A,1,'SA') because of the memory issues, however, for N=260, each iteraction requires 1 hour. I really want to find out fast method to deal this problem.

回答(2 个)

Sean de Wolski
Sean de Wolski 2012-3-22

Andrew Knyazev
Andrew Knyazev 2015-5-15

类别

Help CenterFile Exchange 中查找有关 Logical 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by