How to create positive semidefinite matrix from random value ?
显示 更早的评论
I form a matrix A in matlab as
A=rand(50);
I want to know how to make symmetric matrix using equation
A=0.5 *(A+A');
but how can I make it positive semidefinite matrix?
采纳的回答
A = rand(50);
A = 0.5 *(A+A');
issymmetric(A)
d = eig(A)
all(imag(d) == 0 & d >= 0)
APos = A'*A;
issymmetric(APos)
d = eig(APos)
all(imag(d) == 0 & d >= 0)
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Resizing and Reshaping Matrices 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
