Mercurial > octave
changeset 22214:0ff3bd7d2750
mahalanobis: alternative for performance improvement (bug #45877)
| author | Lachlan Andrew <lachlanbis@gmail.com> |
|---|---|
| date | Sat, 06 Aug 2016 23:47:20 +0100 |
| parents | 1723063e65f3 |
| children | f99c0b8cb67b |
| files | scripts/deprecated/mahalanobis.m |
| diffstat | 1 files changed, 1 insertions(+), 4 deletions(-) [+] |
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--- a/scripts/deprecated/mahalanobis.m Sat Aug 06 05:18:34 2016 +0100 +++ b/scripts/deprecated/mahalanobis.m Sat Aug 06 23:47:20 2016 +0100 @@ -76,13 +76,10 @@ w = (x' * x + y' * y) / (xr + yr - 2); - winv = inv (w); - - retval = (xm - ym) * winv * (xm - ym)'; + retval = sumsq ((xm - ym) / chol (w)); endfunction - ## Test input validation %!error mahalanobis () %!error mahalanobis (1, 2, 3)