projects
/
stockfish
/ commitdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
| commitdiff |
tree
raw
|
patch
| inline |
side by side
(parent:
4f7ec41
)
Reduce history 4 times instead of 2 when reach the maximum
author
Marco Costalba
<mcostalba@gmail.com>
Mon, 18 May 2009 07:51:46 +0000
(09:51 +0200)
committer
Marco Costalba
<mcostalba@gmail.com>
Wed, 20 May 2009 07:03:15 +0000
(09:03 +0200)
This gives more weight to newer entries.
After 999 games at 1'+ 0" we have:
Mod vs Orig +233/-208/=558 51.25% +9 ELO
Confirmed by another session of 437 games:
Mod vs Orig +109/-92/=236 51.95% +14 ELO
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
src/history.cpp
patch
|
blob
|
history
diff --git
a/src/history.cpp
b/src/history.cpp
index
6fe222f
..
edd5cdb
100644
(file)
--- a/
src/history.cpp
+++ b/
src/history.cpp
@@
-64,7
+64,7
@@
void History::success(Piece p, Square to, Depth d) {
if (history[p][to] >= HistoryMax)
for (int i = 0; i < 16; i++)
for (int j = 0; j < 64; j++)
- history[i][j] /=
2
;
+ history[i][j] /=
4
;
}