--- a/main_macros.xml	Thu Apr 12 08:22:58 2018 -0400
+++ b/main_macros.xml	Sat Apr 28 18:08:17 2018 -0400
@@ -423,8 +423,10 @@
 
   <xml name="clf_inputs" token_label1="Dataset containing true labels (tabular):" token_label2="Dataset containing predicted values (tabular):" token_multiple1="False" token_multiple="False">
     <param name="infile1" type="data" format="tabular" label="@LABEL1@"/>
+    <param name="header1" type="boolean" optional="True" truevalue="booltrue" falsevalue="boolfalse" checked="False" label="Does the dataset contain header:" />
     <param name="col1" multiple="@MULTIPLE1@" type="data_column" data_ref="infile1" label="Select the target column:"/>
     <param name="infile2" type="data" format="tabular" label="@LABEL2@"/>
+    <param name="header2" type="boolean" optional="True" truevalue="booltrue" falsevalue="boolfalse" checked="False" label="Does the dataset contain header:" />
     <param name="col2" multiple="@MULTIPLE@" type="data_column" data_ref="infile2" label="Select target column(s):"/>
   </xml>
 
@@ -835,6 +837,21 @@
     </conditional>
   </xml>
 
+  <xml name="model_validation_common_options">
+    <param argument="cv" type="integer" value="" optional="true" label="cv" help="The number of folds in a (Stratified)KFold" />
+    <expand macro="n_jobs"/>
+    <expand macro="verbose"/>
+    <yield/>
+  </xml>
+
+  <xml name="scoring">
+    <param argument="scoring" type="text" value="" optional="true" label="scoring" help="A metric used to evaluate the estimator"/>
+  </xml>
+
+  <xml name="pre_dispatch">
+    <param argument="pre_dispatch" type="text" value="all" optional="true" label="pre_dispatch" help="Number of predispatched jobs for parallel execution"/>
+  </xml>
+
   <!-- Outputs -->
 
   <xml name="output">