Orlando Donato Rocha Filho wrote:
Hi!
> Anybody know say it is possible to convert a opening book of the
> Shredder Linux in .BKT for the format .BIN of SCID?
I admit, if it would be possible easily I'd already have done it.
However, the principle procedure: Stefan told me that the Windows
version of Shredder (full version only, using Shredders own GUI) is
capable of writing the opening books to PGN. Then you could use that one
to go for Scid (=polyglots) book format.
> I tried to convert a file .PGN with Polyglot SOFTWARE for the format.
> BIN of SCID but my file was over 2 million games and it was not
> possible, someone would tell me if there is requirement to make this
> conversion?
Well, for 2*10^6 you'll basically need a lot of RAM. Polyglots memory
management for books is, well, I'd call it broken. However, provided you
have a huge amount of RAM and a fast processor and enough time it is
possible in principle. I once did a smaller version of what you did on a
workstation on our unix cluster. But the algorithm really scales badly
and it is just a waste of memory, so you easily end up requiring several
GB. (And you can give up if your system starts paging.)
The problem gets less severe if you limit the depth of your opening
book, btw.
It would be a great improvement if some skilled programmer could look at
this function, indeed.
The alternative is that someone with a decent knowledge of the openings
compiles a set of PGN files containing the main lines. Then one could
use that as input, you'd never require such a huge base in this case and
it would probably be the best way to do a really good opening book. The
Arena main book is done that way, but it's available in Arena format
only and Arena seems not capable of writing abk -> pgn.
--
Kind regards, / War is Peace.
| Freedom is Slavery.
Alexander Wagner | Ignorance is Strength.
|
| Theory : G. Orwell, "1984"
/ In practice: USA, since 2001
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