matrix is close to singular or badly scaled, what do you interpret by this error.

1 次查看(过去 30 天)
I am using MatLab solver 'fmincon' for an optimization problem. Everything seems to be working good except I got one error warning:
matrix is close to singular or badly scaled. Results may be inaccurate.
RCOND = 1.722247e-17.
My objective function is following:
objective = 0.5*sum(log(sigma2(ind))) + 0.5*(y-yhat)*(S\(y-yhat)');
where S is the matrix with singularity problems. My question is that how do I interpret the final solution If I got this warning. Should I discard this solution or keep it? What are probable solution for improving this situation. I have tried the suggestions on other questions such as using backslash instead of 'inv'. But nothing seems to work.

回答(0 个)


Help CenterFile Exchange 中查找有关 Problem-Based Optimization Setup 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