"How to get the attribute relevance using SVM"
Hello,
I have a SVM Model (LibSVM because of multiclass problem) (included in X-Validation) and I want to know, which attributes are most relevant. I already did a grid search to find out the best parameter combination of gamma and c.
Can I get the attribute relevance with a RBF Kernel or do I have to use a Linear Kernel?
How can I get the information and where would i have to put an additional operator?
The process code is attached. Thanks for your help
I have a SVM Model (LibSVM because of multiclass problem) (included in X-Validation) and I want to know, which attributes are most relevant. I already did a grid search to find out the best parameter combination of gamma and c.
Can I get the attribute relevance with a RBF Kernel or do I have to use a Linear Kernel?
How can I get the information and where would i have to put an additional operator?
The process code is attached. Thanks for your help
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.3.015">
<context>
<input/>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="5.3.015" expanded="true" name="Process">
<process expanded="true">
<operator activated="true" class="retrieve" compatibility="5.3.015" expanded="true" height="60" name="Retrieve Master Excelliste_Gefügebezeichnung_3 klassen" width="90" x="45" y="30">
<parameter key="repository_entry" value="../../Data/Master Excelliste_Gefügebezeichnung_3 klassen"/>
</operator>
<operator activated="true" class="normalize" compatibility="5.3.015" expanded="true" height="94" name="Normalize" width="90" x="179" y="30">
<parameter key="method" value="range transformation"/>
<parameter key="min" value="-1.0"/>
</operator>
<operator activated="true" class="split_validation" compatibility="5.3.015" expanded="true" height="112" name="Validation" width="90" x="380" y="30">
<parameter key="split_ratio" value="0.8"/>
<parameter key="sampling_type" value="stratified sampling"/>
<process expanded="true">
<operator activated="true" class="support_vector_machine_libsvm" compatibility="5.3.015" expanded="true" height="76" name="SVM" width="90" x="150" y="30">
<parameter key="gamma" value="0.03087"/>
<parameter key="C" value="898910.0"/>
<list key="class_weights"/>
</operator>
<connect from_port="training" to_op="SVM" to_port="training set"/>
<connect from_op="SVM" from_port="model" to_port="model"/>
<portSpacing port="source_training" spacing="0"/>
<portSpacing port="sink_model" spacing="0"/>
<portSpacing port="sink_through 1" spacing="0"/>
</process>
<process expanded="true">
<operator activated="true" class="apply_model" compatibility="5.3.015" expanded="true" height="76" name="Apply Model" width="90" x="45" y="30">
<list key="application_parameters"/>
</operator>
<operator activated="true" class="performance" compatibility="5.3.015" expanded="true" height="76" name="Performance" width="90" x="248" y="30"/>
<connect from_port="model" to_op="Apply Model" to_port="model"/>
<connect from_port="test set" to_op="Apply Model" to_port="unlabelled data"/>
<connect from_op="Apply Model" from_port="labelled data" to_op="Performance" to_port="labelled data"/>
<connect from_op="Performance" from_port="performance" to_port="averagable 1"/>
<portSpacing port="source_model" spacing="0"/>
<portSpacing port="source_test set" spacing="0"/>
<portSpacing port="source_through 1" spacing="0"/>
<portSpacing port="sink_averagable 1" spacing="0"/>
<portSpacing port="sink_averagable 2" spacing="0"/>
</process>
</operator>
<connect from_op="Retrieve Master Excelliste_Gefügebezeichnung_3 klassen" from_port="output" to_op="Normalize" to_port="example set input"/>
<connect from_op="Normalize" from_port="example set output" to_op="Validation" to_port="training"/>
<connect from_op="Validation" from_port="model" to_port="result 1"/>
<connect from_op="Validation" from_port="averagable 1" to_port="result 2"/>
<portSpacing port="source_input 1" spacing="0"/>
<portSpacing port="sink_result 1" spacing="0"/>
<portSpacing port="sink_result 2" spacing="0"/>
<portSpacing port="sink_result 3" spacing="0"/>
</process>
</operator>
</process>