WeightedPerformanceCreator

radone

Hello,
could anyone give me an example how the WeightedPerformanceCreator should be used. Unfortunately, the code below returns "unknown" performance value.

Below I have made an example (which is a part of XValidation) where the default weight is 0.0 and the weight of "accuracy" and "relative_error" were explicitly set to 1.0 resp. 2.0. I do nut undersand why the resulting performance vector returns unknown.

Thank you in advance.

                    <operator name="ClassificationPerformance (5)" class="ClassificationPerformance">
                        <parameter key="keep_example_set"	value="true"/>
                        <parameter key="main_criterion"	value="relative_error"/>
                        <parameter key="accuracy"	value="true"/>
                        <parameter key="relative_error"	value="true"/>
                        <parameter key="squared_error"	value="true"/>
                        <parameter key="correlation"	value="true"/>
                        <list key="class_weights">
                        </list>
                    </operator>
                    <operator name="WeightedPerformanceCreator" class="WeightedPerformanceCreator">
                        <parameter key="default_weight"	value="0.0"/>
                        <list key="criteria_weights">
                          <parameter key="accuracy"	value="1.0"/>
                          <parameter key="relative_error"	value="2.0"/>
                        </list>
                    </operator>

land

Hi,
at least in RapidMiner 5.0 this works as expected.

Greetings,
  Sebastian