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(URGENT) How to enumerate from n different training and test sets??

misaghbmisaghb Member Posts: 7 Contributor II
edited November 2018 in Help


I want to train a model from several training sets and apply it to several test sets.

I have 60 train sets (train_i.dat) and 60 test sets (test_i.dat) in the same folder.
How can I design a loop structure that at the first iteration loads train_1.dat and applies the learned model to test_1.dat, but in the next iteration loads train_2.dat and applies the learned model to test_2.dat and so on??

Then by using "IteratingPerformanceAverage" operator I can calculate the final performance.

Can anybody tell what operator tree structure and what xml configuration I should use to solve this problem?

I need the solution so urgently.



  • Options
    steffensteffen Member Posts: 347 Maven
    Hello misaghb

    Assignment ? Meeting ?  ;D

    The solution to your problem are RapidMiner macros.

    <operator name="Root" class="Process" expanded="yes">
        <operator name="IteratingPerformanceAverage" class="IteratingPerformanceAverage" expanded="yes">
            <parameter key="iterations" value="60"/>
            <operator name="load_train" class="ExampleSource">
                <parameter key="attributes" value="train_%{a}.aml"/>
                <parameter key="decimal_point_character" value=""/>
            <operator name="example_model" class="NaiveBayes">
            <operator name="load_test" class="ExampleSource">
                <parameter key="attributes" value="test_%{a}.aml"/>
                <parameter key="decimal_point_character" value=""/>
            <operator name="ModelApplier" class="ModelApplier">
                <list key="application_parameters">
    hope this was "fast" enough

  • Options
    misaghbmisaghb Member Posts: 7 Contributor II

    Dear Steffen
    Thanks a lot for your kind fast reply.
    It looks great.  :D

    Thanks again.
    - misagh.
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