Search Results
Search type | Search syntax |
---|---|
Tags | [tag] |
Exact | "words here" |
Author |
user:1234 user:me (yours) |
Score |
score:3 (3+) score:0 (none) |
Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
Views | views:250 |
Code | code:"if (foo != bar)" |
Sections |
title:apples body:"apples oranges" |
URL | url:"*.example.com" |
Saves | in:saves |
Status |
closed:yes duplicate:no migrated:no wiki:no |
Types |
is:question is:answer |
Exclude |
-[tag] -apples |
For more details on advanced search visit our help page |
A $k\times k$ matrix of correlations between all pairs of $k$ random variables. All its diagonal elements are equal to one.
9
votes
3
answers
5k
views
Is every correlation matrix positive semi-definite?
I am generating correlation matrix by some new algorithm. Generated matrix is non positive semi-definite matrix.
I'm getting a few negative eigenvalues. The rest of eigenvalues are quite equal to the …