How to use ExampleFilter or ExampleRangeFilter

amy

Hi there,
I have an ExampleSet eset now and also I have selected some examples out of it such as e1, e2, e3, e4, e5.
How can I separate eset into two parts, one ExampleSet just includes  e1, e2, e3, e4, e5, and the other has the left in it?
Should I use ExampleFilter? I have looked at it. But I don't know how to use it.
I use RapidMiner in java not with the GUI interface.
Another question is if I have a double[] which has the same structure as e1, e2 etc., how can I add the double[] to eset.
Thanks a lot.

steffen

Hello amy

For this case, you need to double the ExampleSet and apply ExampleFilter twice.
Example:

<operator name="Root" class="Process" expanded="yes">
    <operator name="ExampleSource" class="ExampleSource">
        <parameter key="attributes"	value="iris.aml"/>
    </operator>
    <operator name="IOMultiplier" class="IOMultiplier">
        <parameter key="io_object"	value="ExampleSet"/>
    </operator>
    <operator name="ExampleFilter" class="ExampleFilter">
        <parameter key="condition_class"	value="attribute_value_filter"/>
        <parameter key="parameter_string"	value="a1&gt;5"/>
    </operator>
    <operator name="IOSelector" class="IOSelector">
        <parameter key="io_object"	value="ExampleSet"/>
        <parameter key="select_which"	value="2"/>
    </operator>
    <operator name="ExampleFilter (2)" class="ExampleFilter">
        <parameter key="condition_class"	value="attribute_value_filter"/>
        <parameter key="invert_filter"	value="true"/>
        <parameter key="parameter_string"	value="a1&gt;5"/>
    </operator>
</operator>

Another question is if I have a double[] which has the same structure as e1, e2 etc., how can I add the double[] to eset.

I suggest this: Create an ExampleSet representing your double[] and then apply the ExampleSetMerge-Operator. 
In case you think this is complicated: The inner structure of ExampleSet named ExampleTable, which stores the data (note that ExampleSet is just a view on ExampleTable), is not meant to be changed easily (e.g. by adding data). This seems to be a disadvantage, but in fact this is one the reasons why RapidMiner is fast.

hope this was helpful,

Steffen

amy

Hi Steffen,
Thank you very much. Especially the idea about ExampleSet and ExampleTable.

Regards

Amy