[RC5] OGR search ignoring "as-good-as" candidates? And a mode st proposal...

Richard Farmbrough Richard.Farmbrough at telewest.co.uk
Sat Nov 16 23:41:17 EST 2002

Unfortunately OGR's are very "inefficient" by which I mean that the length
of say, OGR 27 will probably be sixty one units greater than OGR 26, and
hence based on a ruler which would have been discarded in the OGR 26 search
(in fact, arguably only one 26 mark ruler will have been generated).

However your second point is valid.

I would propose that once the bugs in OGR are believed eradicated we (i.e.
dnet) run at least OGR20 - 23 as a test, which should take less than one day
of the dnet entities processing time.

-----Original Message-----
From: Marco Tedaldi [mailto:marco at tedaldi.net]
Sent: 15 November 2002 19:40
To: rc5 at lists.distributed.net
Subject: Re: [RC5] OGR search ignoring "as-good-as" candidates?

On Fri, 15 Nov 2002 04:49:13 -0500, Cole Kitchen wrote:

>In the following Faq-O-Matic query, somebody raised a good point about the 
>possible importance of "as-good-as" Golomb rulers. Have the "powers that 
>be" at d.net taken this into consideration?
> From the OGR Faq-O-Matic:
>What is the most optimal ruler found by d.net so far?
One more Question rises in this...
Ok, possibly it woud be a bandwith and storage-problem. But when
we get a stub to calculate, our computers get a golum-ruler (not
an OGR, but a GR). Wouldn't it be possible, to store all GR-24
and just test them with one more node to see, if they are an
OGR-25. For my logic, an OGR-25 MUST base on an GR-24.
But i can imagine that this would be a storage and Bandwith
problem, even if it would help make the calculations faster.

Different Approach. By Calculating OGR-25 (26...) arn't there
smaller OGRs found "for free"?


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