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det
1999 Apr 20
1
eigenvalue calculations
...the patched versions of R-release (available under
src/devel at the CRAN sites) that bug has been fixed.
In case anyone else is interested, I redid the determinant
calculations in
Version 0.64.0 Patched (unreleased snapshot) (April 19, 1999)
using the method from Stephan Steinhaus's script (det0), the method
based on calculating the eigenvalues alone (det1) and the method based
on the QR decomposition (det2). The results from the three methods
are consistent except that the eigenvalue methods both produce a
non-trivial imaginary component.
I enclose the timing results below. Notice that...