<operator name="Root" class="Process">
  <parameter key="logfile" value="XValidation.log"/>
  <operator name="Input" class="ExampleSource">
    <parameter key="attributes" value="../data/polynomial.aml"/>
  </operator>
  <operator name="XVal" class="XValidation">
    <operator name="Training" class="LibSVMLearner">
      <parameter key="svm_type" value="epsilon-SVR"/>
      <parameter key="kernel_type" value="poly"/>
      <parameter key="C" value="1000.0"/>
    </operator>
    <operator name="ApplierChain" class="OperatorChain">
      <operator name="Test" class="ModelApplier">
      </operator>
      <operator name="Evaluation" class="PerformanceEvaluator">
        <parameter key="squared_error"	value="true"/>
      </operator>
    </operator>
  </operator>
</operator>
