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"Looping over an Operator"
Contributor I
Hello there 
I'm new to RapidMiner and had a question, regarding looping. I searched the web but couldn't find a solution...
What I want to do is, for a specific Log, use a Control-Flow Miner (like the Alpha Algorithm Miner) but also add noise to the log. I want to add noise on different percentages, 0%, 10%, 20%...100%, so for each 'Noise Type' i want to have 11 different outcomes. I don't know how to loop this operation... Can someone help me? It is very inefficient do create 11 different paths... And keep changing stuff around.
I added my process in this image:
I'm new to RapidMiner and had a question, regarding looping. I searched the web but couldn't find a solution...
What I want to do is, for a specific Log, use a Control-Flow Miner (like the Alpha Algorithm Miner) but also add noise to the log. I want to add noise on different percentages, 0%, 10%, 20%...100%, so for each 'Noise Type' i want to have 11 different outcomes. I don't know how to loop this operation... Can someone help me? It is very inefficient do create 11 different paths... And keep changing stuff around.
I added my process in this image:
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Answers
Loop Values is your friend. Sadly you need to use a remember recall construct.
The attached process show the procedure. It's annotated which should help.
~Martin
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="6.4.000">
<context>
<input/>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="6.4.000" expanded="true" name="Process">
<process expanded="true">
<operator activated="true" class="generate_data" compatibility="6.4.000" expanded="true" height="60" name="Generate Data (2)" width="90" x="246" y="390">
<parameter key="attributes_lower_bound" value="0.0"/>
<parameter key="attributes_upper_bound" value="100.0"/>
</operator>
<operator activated="true" class="remember" compatibility="6.4.000" expanded="true" height="60" name="Remember" width="90" x="380" y="390">
<parameter key="name" value="tempObject"/>
</operator>
<operator activated="true" class="subprocess" compatibility="6.4.000" expanded="true" height="76" name="Subprocess" width="90" x="45" y="165">
<process expanded="true">
<operator activated="true" class="generate_data" compatibility="6.4.000" expanded="true" height="60" name="Generate Data" width="90" x="45" y="30">
<parameter key="number_examples" value="10"/>
</operator>
<operator activated="true" class="generate_id" compatibility="6.4.000" expanded="true" height="76" name="Generate ID" width="90" x="179" y="30"/>
<operator activated="true" class="generate_attributes" compatibility="6.4.000" expanded="true" height="76" name="Generate Attributes" width="90" x="313" y="30">
<list key="function_descriptions">
<parameter key="percentage" value="id*10"/>
</list>
</operator>
<operator activated="true" class="select_attributes" compatibility="6.4.000" expanded="true" height="76" name="Select Attributes" width="90" x="447" y="30">
<parameter key="attribute_filter_type" value="single"/>
<parameter key="attribute" value="percentage"/>
<parameter key="include_special_attributes" value="true"/>
</operator>
<connect from_op="Generate Data" from_port="output" to_op="Generate ID" to_port="example set input"/>
<connect from_op="Generate ID" from_port="example set output" to_op="Generate Attributes" to_port="example set input"/>
<connect from_op="Generate Attributes" from_port="example set output" to_op="Select Attributes" to_port="example set input"/>
<connect from_op="Select Attributes" from_port="example set output" to_port="out 1"/>
<portSpacing port="source_in 1" spacing="0"/>
<portSpacing port="sink_out 1" spacing="0"/>
<portSpacing port="sink_out 2" spacing="0"/>
</process>
</operator>
<operator activated="true" class="numerical_to_polynominal" compatibility="6.4.000" expanded="true" height="76" name="Numerical to Polynominal" width="90" x="313" y="165">
<parameter key="attribute_filter_type" value="single"/>
<parameter key="attribute" value="percentage"/>
</operator>
<operator activated="true" class="loop_values" compatibility="6.4.000" expanded="true" height="76" name="Loop Values" width="90" x="581" y="165">
<parameter key="attribute" value="percentage"/>
<parameter key="iteration_macro" value="noiseLevel"/>
<process expanded="true">
<operator activated="true" class="recall" compatibility="6.4.000" expanded="true" height="60" name="Recall" width="90" x="45" y="120">
<parameter key="name" value="tempObject"/>
<parameter key="remove_from_store" value="false"/>
</operator>
<operator activated="true" class="filter_examples" compatibility="6.4.000" expanded="true" height="94" name="Filter Examples" width="90" x="313" y="120">
<list key="filters_list">
<parameter key="filters_entry_key" value="att1.le.%{noiseLevel}"/>
</list>
</operator>
<connect from_op="Recall" from_port="result" to_op="Filter Examples" to_port="example set input"/>
<connect from_op="Filter Examples" from_port="example set output" to_port="out 1"/>
<portSpacing port="source_example set" spacing="0"/>
<portSpacing port="sink_out 1" spacing="0"/>
<portSpacing port="sink_out 2" spacing="0"/>
<description align="center" color="yellow" colored="false" height="199" resized="true" width="245" x="254" y="59">Do you work on the example set</description>
<description align="center" color="yellow" colored="false" height="178" resized="true" width="202" x="10" y="67">Be sure not to delete that item</description>
</process>
</operator>
<connect from_op="Generate Data (2)" from_port="output" to_op="Remember" to_port="store"/>
<connect from_op="Subprocess" from_port="out 1" to_op="Numerical to Polynominal" to_port="example set input"/>
<connect from_op="Numerical to Polynominal" from_port="example set output" to_op="Loop Values" to_port="example set"/>
<connect from_op="Loop Values" from_port="out 1" to_port="result 1"/>
<portSpacing port="source_input 1" spacing="0"/>
<portSpacing port="sink_result 1" spacing="144"/>
<portSpacing port="sink_result 2" spacing="0"/>
<description align="center" color="yellow" colored="false" height="255" resized="true" width="195" x="10" y="59">Generate Data with the desired percentages. You can also use Read Excel or the Data editor</description>
<description align="center" color="yellow" colored="false" height="270" resized="true" width="308" x="212" y="50">Loop Values needs polynominal values. That does not matter that much, because we use it as a macro anyway</description>
<description align="center" color="yellow" colored="false" height="224" resized="true" width="325" x="205" y="338">This is the data you want to apply the process in the loop. Please take care of the excecution order</description>
</process>
</operator>
</process>
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