[TREE] Experimental version of monotone constraint (#1516)

* [TREE] Experimental version of monotone constraint * Allow default detection of montone option * loose the condition of strict check * Update gbtree.cc
2016-09-07 21:28:43 -07:00
parent 8cac37b2b4
commit c93c9b7ed6
3 changed files with 296 additions and 31 deletions
--- a/src/gbm/gbtree.cc
+++ b/src/gbm/gbtree.cc
@@ -15,6 +15,7 @@
 #include <utility>
 #include <string>
 #include <limits>
+#include <unordered_map>
 #include <algorithm>
 #include "../common/common.h"