Better stratification, using Round instead of Floor.

AVCDecisionTreeForest.m

@@ -190,7 +190,7 @@ Mathematica is (C) Copyright 1988-2012 Wolfram Research, Inc.
    If[min == max,
     data,
     h = (max - min)/nStrata;
-    Map[Floor[(# - min)/h]*h + min &, data]
+    Map[Round[(# - min), h] + min &, data]
     ]
    ];
 Stratify[data_, nStrata_Integer] := data;