[Proj] Re: Dozier's TM method---my summary

Gerald I. Evenden gerald.evenden at verizon.net
Wed Jul 5 15:20:43 EDT 2006

On Wednesday 05 July 2006 8:31 am, Oscar van Vlijmen wrote:
> What surprises me is that I gave an alternative twice, once in a posting on
> this list dated 2006-06-13, once in a private email dated 2006-06-23,
> including a web reference.
> It's about ACM TOMS algorithm 365 from H. Bach. Fortran code can be found
> at netlib.org and one can buy a copy of the peer reviewed TOMS article at
> ACM (acm.org).
> I am not happy with the method because it is horribly slow, but it is a
> very robust method, at least if one knows how to tweak its control
> parameters.

Not sure what you meant by slow but the example clocked in at 2ms real time 
and did not show on the millisecond user/system clocks.

Sorta looks like a steepest descent routine with no analysis from derivatives 
so it is likely to be sluggish.

So much for Dozier's idea of a speedy method.  ;-)

I stupidly missed all the control in the file so had to do about three whacks 
at getting it to compile.  Once the junk was removed it went fine.

Jerry and the low-riders: Daisy Mae and Joshua
"Cogito cogito ergo cogito sum"
   Ambrose Bierce, The Devil's Dictionary

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