[gnugo-devel] tuning patch

[Gunnar Farneback]

A little tuning. Regression delta:

nicklas1:501    PASS G7 [G7]
gunnar:48       PASS P11 [P11]
nngs4:800       pass (fails in CVS)

- value_move_reasons() revised
- eye tuning
- tuning

/Gunnar

Index: engine/value_moves.c
===================================================================
RCS file: /cvsroot/gnugo/gnugo/engine/value_moves.c,v
retrieving revision 1.115
diff -u -r1.115 value_moves.c
--- engine/value_moves.c        7 Jan 2004 10:00:20 -0000       1.115
+++ engine/value_moves.c        18 Jan 2004 13:57:28 -0000
@@ -2608,6 +2608,10 @@
     int c;
     float followup_value;
 
+    /* Negative territorial followup doesn't make make sense. */
+    if (move[pos].influence_followup_value < 0.0)
+      move[pos].influence_followup_value = 0.0;
+     
     followup_value = move[pos].followup_value
                     + move[pos].influence_followup_value;
     TRACE("  %1m:   %f - total followup value, added %f as territorial 
followup\n",
@@ -2617,11 +2621,8 @@
      * be 0 points + followup.  But we want to take the intersections first
      * were we actually get some points.  0.5 points is a 1 point ko which
      * is the smallest value that is actually worth something.
-     * tm - But with reverse_followup values, we may want to play a 0
-     *      point move. 
      */
-    if (tot_value >= 0.5 
-       || (move[pos].reverse_followup_value >= 1.0)) {
+    if (tot_value >= 0.5) {
       float old_tot_value = tot_value;
       float contribution;
       /* We adjust the value according to followup and reverse followup
Index: patterns/eyes.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/eyes.db,v
retrieving revision 1.45
diff -u -r1.45 eyes.db
--- patterns/eyes.db    7 Jan 2004 10:00:20 -0000       1.45
+++ patterns/eyes.db    14 Jan 2004 23:12:59 -0000
@@ -5593,7 +5593,7 @@
 Pattern 78520
 
 |.
-|X.
+|Xx
 |XX
 |.X
 +--
@@ -5623,12 +5623,56 @@
 
 Pattern 78523
 
+|.
+|XX
+|*X
+|.X
++--
+
+:1122
+
+
+Pattern 78524
+
+  .
+|XX
+|*X
+|.X
++--
+
+:1122
+
+
+Pattern 78525
+
+  
+|XX
+|*X
+|.X.
++---
+
+:1122
+
+
+Pattern 78526
+
 |xx
 |XX
 |.*.
 +---
 
 :1122
+
+
+Pattern 78527
+
+  .
+|XX
+|XX
+|.X
++--
+
+:1111
 
 
 Pattern 78550
Index: patterns/patterns.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/patterns.db,v
retrieving revision 1.121
diff -u -r1.121 patterns.db
--- patterns/patterns.db        7 Jan 2004 10:00:20 -0000       1.121
+++ patterns/patterns.db        14 Jan 2004 23:12:59 -0000
@@ -280,6 +280,7 @@
 # tm modified (3.1.10)
 # (compare Conn315)
 # gf Added n classification. (3.3.16)
+# gf Revised constraint. (3.5.4)
 
 O?        cut!
 *X
@@ -289,9 +290,9 @@
 
 O?
 *A
-BO
+Bc
 
-; oplay_attack_either(*,A,B)
+;lib(c)>1 && oplay_attack_either(*,A,B)
 
 
 Pattern CC13b
@@ -12738,23 +12738,24 @@
 ; owl_threatens(*,A)
 
 
-Pattern EJ61
-
-o.X??       follow through after hane
-O.XO.
-.XO*.
-.....
------
-
-:8,J
-
-o.X??
-O.XA.
-.XO*.
-.....
------
-
-; !critical(A)
+# Pattern EJ61
+# gf Removed. This move may fail to secure life. (3.5.4)
+# 
+# o.X??       follow through after hane
+# O.XO.
+# .XO*.
+# .....
+# -----
+# 
+# :8,J
+# 
+# o.X??
+# O.XA.
+# .XO*.
+# .....
+# -----
+# 
+# ; !critical(A)
 
 
 Pattern EJ62a
Index: patterns/patterns2.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/patterns2.db,v
retrieving revision 1.68
diff -u -r1.68 patterns2.db
--- patterns/patterns2.db       7 Jan 2004 10:00:20 -0000       1.68
+++ patterns/patterns2.db       18 Jan 2004 13:57:37 -0000
@@ -3225,6 +3225,25 @@
 > good_attack_threat(*,A)
 
 
+Pattern Sente23
+# gf New pattern. (3.5.4)
+# See trevorc:450.
+
+?OX
+O.O
+O*X
+
+:8,O
+
+?OX
+a.c
+a*B
+
+;lib(a)>3 && alive(B) && xplay_attack(*,c)
+
+>prevent_attack_threat(c);
+
+
 ########################################################
 #
 # Double threat moves and defense against double threats