random first move when selfplay

hzyhhzy · Oct 9, 2024 · 39a4abf · 39a4abf
1 parent d482977
commit 39a4abf
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Showing 2 changed files with 17 additions and 2 deletions.
diff --git a/cpp/neuralnet/nninputs.cpp b/cpp/neuralnet/nninputs.cpp
@@ -566,15 +566,17 @@ void NNInputs::fillRowV7(
   //The first 5 of them were set already above to flag which of the past 5 moves were passes.
 
   //Scoring
-  if(hist.rules.scoringRule == Rules::SCORING_AREA) {}
+  if(hist.rules.scoringRule == Rules::SCORING_AREA) {} 
+  else if(hist.rules.scoringRule == Rules::SCORING_CON) {
+    rowGlobal[6] = 1.0;
+  }
   else
     ASSERT_UNREACHABLE;
 
 
   // Parameter 0 noResultUtilityForWhite, when draw, white's win rate = 0.5*(noResultUtilityForWhite+1)
   rowGlobal[0] = pla == C_WHITE ? nnInputParams.noResultUtilityForWhite : -nnInputParams.noResultUtilityForWhite;
 
-  rowGlobal[6] = hist.rules.scoringRule == Rules::SCORING_CON;
 
   // Parameter 15 is used because there's actually a discontinuity in how training behavior works when this is
   // nonzero, no matter how slightly.

diff --git a/cpp/program/play.cpp b/cpp/program/play.cpp
@@ -1225,6 +1225,19 @@ FinishedGameData* Play::runGame(
     }
   };
 
+  if (gameRand.nextBool(0.95))
+  {
+    if (board.stonenum == 0)
+    {
+      //random play first move
+      int x = gameRand.nextUInt(board.x_size);
+      int y = gameRand.nextUInt(board.y_size);
+      Loc loc = Location::getLoc(x, y, board.x_size);
+      assert(pla == C_BLACK);
+      assert(board.isLegal(loc, pla));
+      hist.makeBoardMoveAssumeLegal(board, loc, pla);
+    }
+  }
 
   if(playSettings.initGamesWithPolicy && otherGameProps.allowPolicyInit) {
     double avgPolicyInitMoveNum =