<NME> RMSE.java
<BEF> ADDFILE
<MSG> use RMSE in exp119,120,121

<DFF> @@ -0,0 +1,17 @@
+package edu.neu.ccs.pyramid.eval;
+
+import edu.neu.ccs.pyramid.dataset.RegDataSet;
+import edu.neu.ccs.pyramid.regression.Regressor;
+
+/**
+ * Created by chengli on 6/5/15.
+ */
+public class RMSE {
+    public static double rmse(double[] labels, double[] predictions){
+        return Math.pow(MSE.mse(labels,predictions),0.5);
+    }
+
+    public static double rmse(Regressor regressor, RegDataSet dataSet){
+        return Math.pow(MSE.mse(regressor,dataSet),0.5);
+    }
+}

use RMSE in exp119,120,121