Merge pull request #469 from Far0n/patch-1

alpha & lambda for gbtree
2015-09-06 12:37:56 -07:00 · 2015-09-06 12:37:56 -07:00 · b3a3228a02
commit b3a3228a02
parent 3d6c831e8a cfcb1fc491
1 changed files with 4 additions and 0 deletions
--- a/doc/parameter.md
+++ b/doc/parameter.md
@ -46,6 +46,10 @@ Parameters for Tree Booster
 * colsample_bytree [default=1]
  - subsample ratio of columns when constructing each tree.
  - range: (0,1]
+* lambda [default=1]
+  - L2 regularization term on weights
+* alpha [default=0]
+  - L1 regularization term on weights

 Parameters for Linear Booster
 -----------------------------