Use the best move eval instead of highest eval for temperature cutoff.

Mardak · Mardak · commit a253e7462062 · 2019-03-20T09:43:37.000-07:00
diff --git a/src/mcts/search.cc b/src/mcts/search.cc
@@ -595,8 +595,10 @@ EdgeAndNode Search::GetBestChildWithTemperature(Node* parent,
             root_limit.end()) {
       continue;
     }
-    if (edge.GetN() + offset > max_n) max_n = edge.GetN() + offset;
-    if (edge.GetQ(fpu) > max_eval) max_eval = edge.GetQ(fpu);
+    if (edge.GetN() + offset > max_n) {
+      max_n = edge.GetN() + offset;
+      if (edge.GetQ(fpu) > max_eval) max_eval = edge.GetQ(fpu);
+    }
   }
 
   // No move had enough visits for temperature, so use default child criteria

Original file line number	Diff line number	Diff line change
`@@ -595,8 +595,10 @@ EdgeAndNode Search::GetBestChildWithTemperature(Node* parent,`
`595`	`595`	`root_limit.end()) {`
`596`	`596`	`continue;`
`597`	`597`	`}`
`598`		`- if (edge.GetN() + offset > max_n) max_n = edge.GetN() + offset;`
`599`		`- if (edge.GetQ(fpu) > max_eval) max_eval = edge.GetQ(fpu);`
	`598`	`+ if (edge.GetN() + offset > max_n) {`
	`599`	`+ max_n = edge.GetN() + offset;`
	`600`	`+ if (edge.GetQ(fpu) > max_eval) max_eval = edge.GetQ(fpu);`
	`601`	`+ }`
`600`	`602`	`}`
`601`	`603`
`602`	`604`	`// No move had enough visits for temperature, so use default child criteria`