pgeorges schrieb:

Hi!

 > I tried to extend the number of lines used to fill the tree cache (2000
 > lines from ECO classification). Then I  ran it with a tree from a 3 M
 > games base : the cache would need several weeks to be filled (!).

3M means 3*10^6 I guess or 3.000.000 games. It would make me
wonder if you could fill the cache in much less that that
time. IMHO that's the point why one would need some user
defined level as you can't fill every line into the cache.
Additonally at some point I feel you'd not gain from the
cache anymore as searching the cache would need the same
time than searching the db.

 > So I removed this, and added extra menus to fill the cache
 > corresponding to an opening base (with a few games, each
 > less than 100 moves).

This sounds more resonable. But just to get it correctly.
What you call an opening base means essentially a scid-db
that contains just games for the openings one is interested
in. The simplest idea to build such a DB would be to select
all games for A00, and then cut the games to say 25 moves.
Right? (Of course one would invest a bit more work into the
creation of such a DB.) The result might be called A00DB.

 > This opening base contains my own book and the cache is
 > filled by walking through all moves and variations. The
 > timing is more reasonable (around one hour for each game).
 > Once done, the tree works instantly.


That is now I open the 3M DB you mentioned in the first hand
and say something like "fill the cache with the input from
A00DB"? It will then search every position found in A00DB in
3M DB and add the games found to the cache. I guess if the
games found by this procedure drops below a certain number
(say 10 or 50, I do not know when direct searching gets as
fast as cache searching) it does not follow the input tree
any longer but moves on to the next game in A00DB.

-- 

Kind regards,

Alexander Wagner
Universitaetsbibliothek Ilmenau
Langewiesener Str. 37
98693 Ilmenau
Tel.: 03677/69-4521 , Fax.: 03677/69-4617

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