hello @In777

Not sure if I this solves your issue, but typical problems when doing type conversion and your column is  has a special role (e.g columns like labels , weights etc.) is folks do not check the "inclide special attributes" checkbox.

Can you confirm if that was not the case

Dear @In777,

thanks for reaching out. The LibSVM One class svm is sometimes a bit confusing. You acutually need to have a binary label to do it. The second class needs to have 0 examples.

~Martin

I do not think that the problem is with the transformation. I modified my workflow, but it still does not work.  I got a message about bug report. Here is my xml:

l version="1.0" encoding="UTF-8" standalone="no"?>
<process version="7.1.001">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="6.0.002" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="text:process_document_from_file" compatibility="7.1.001" expanded="true" height="82" name="Process Categories" width="90" x="112" y="85">
        <list key="text_directories">
          <parameter key="Energy" value="D:\Categories\Energy"/>
          <parameter key="Education" value="D:\Categories\Education"/>
        </list>
        <parameter key="keep_text" value="true"/>
        <process expanded="true">
          <operator activated="true" class="text:tokenize" compatibility="7.1.001" expanded="true" height="68" name="Tokenize" width="90" x="45" y="34"/>
          <operator activated="true" class="text:filter_stopwords_english" compatibility="7.1.001" expanded="true" height="68" name="Filter Stopwords (English)" width="90" x="179" y="34"/>
          <operator activated="true" class="text:stem_porter" compatibility="7.1.001" expanded="true" height="68" name="Stem (Porter)" width="90" x="313" y="34"/>
          <operator activated="true" class="text:generate_n_grams_terms" compatibility="7.1.001" expanded="true" height="68" name="Generate n-Grams (Terms)" width="90" x="447" y="34">
            <parameter key="max_length" value="4"/>
          </operator>
          <connect from_port="document" to_op="Tokenize" to_port="document"/>
          <connect from_op="Tokenize" from_port="document" to_op="Filter Stopwords (English)" to_port="document"/>
          <connect from_op="Filter Stopwords (English)" from_port="document" to_op="Stem (Porter)" to_port="document"/>
          <connect from_op="Stem (Porter)" from_port="document" to_op="Generate n-Grams (Terms)" to_port="document"/>
          <connect from_op="Generate n-Grams (Terms)" from_port="document" to_port="document 1"/>
          <portSpacing port="source_document" spacing="0"/>
          <portSpacing port="sink_document 1" spacing="0"/>
          <portSpacing port="sink_document 2" spacing="0"/>
        </process>
      </operator>
      <operator activated="true" class="x_validation" compatibility="7.1.001" expanded="true" height="124" name="Validation" width="90" x="380" y="85">
        <parameter key="number_of_validations" value="3"/>
        <process expanded="true">
          <operator activated="true" class="filter_examples" compatibility="6.4.000" expanded="true" height="103" name="Filter Examples" width="90" x="45" y="34">
            <parameter key="parameter_string" value="label=Energy"/>
            <parameter key="condition_class" value="attribute_value_filter"/>
            <list key="filters_list"/>
          </operator>
          <operator activated="true" class="select_attributes" compatibility="7.1.001" expanded="true" height="82" name="Select Attributes" width="90" x="180" y="30">
            <parameter key="attribute_filter_type" value="single"/>
            <parameter key="attribute" value="label"/>
            <parameter key="invert_selection" value="true"/>
            <parameter key="include_special_attributes" value="true"/>
          </operator>
          <operator activated="true" class="generate_attributes" compatibility="6.4.000" expanded="true" height="82" name="Generate Attributes" width="90" x="45" y="187">
            <list key="function_descriptions">
              <parameter key="label" value="&quot;Energy&quot;"/>
            </list>
          </operator>
          <operator activated="true" class="set_role" compatibility="5.3.013" expanded="true" height="82" name="Set Role" width="90" x="179" y="187">
            <parameter key="attribute_name" value="label"/>
            <parameter key="target_role" value="label"/>
            <list key="set_additional_roles"/>
          </operator>
          <operator activated="true" class="support_vector_machine_libsvm" compatibility="7.1.001" expanded="true" height="82" name="SVM" width="90" x="313" y="34">
            <parameter key="svm_type" value="one-class"/>
            <list key="class_weights"/>
          </operator>
          <connect from_port="training" to_op="Filter Examples" to_port="example set input"/>
          <connect from_op="Filter Examples" 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_op="Generate Attributes" to_port="example set input"/>
          <connect from_op="Generate Attributes" from_port="example set output" to_op="Set Role" to_port="example set input"/>
          <connect from_op="Set Role" from_port="example set output" 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="7.1.001" expanded="true" height="82" name="Apply Model" width="90" x="45" y="34">
            <list key="application_parameters"/>
          </operator>
          <operator activated="true" class="nominal_to_binominal" compatibility="7.1.001" expanded="true" height="103" name="Nominal to Binominal" width="90" x="179" y="34">
            <parameter key="attribute_filter_type" value="single"/>
            <parameter key="attribute" value="prediction(label)"/>
            <parameter key="include_special_attributes" value="true"/>
          </operator>
          <operator activated="true" class="performance" compatibility="7.1.001" expanded="true" height="82" name="Performance" width="90" x="313" y="34">
            <parameter key="use_example_weights" value="false"/>
          </operator>
          <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="Nominal to Binominal" to_port="example set input"/>
          <connect from_op="Nominal to Binominal" from_port="example set output" 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="Process Categories" from_port="example set" to_op="Validation" to_port="training"/>
      <connect from_op="Validation" from_port="model" to_port="result 1"/>
      <connect from_op="Validation" from_port="training" to_port="result 2"/>
      <connect from_op="Validation" from_port="averagable 1" to_port="result 3"/>
      <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"/>
      <portSpacing port="sink_result 4" spacing="0"/>
    </process>
  </operator>
</process>

Thank you for your suggestion. I've tried to leave one of the directories with the examples empty, unfortunately that did not help. I still get a bug report (see my previous post).

Hi

i've checked it again. it is the other way around. you need to have a nominal coloum with only one class as label. See attached process.

~Martin

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="7.1.001">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="7.1.001" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="retrieve" compatibility="7.1.001" expanded="true" height="68" name="Retrieve Golf" width="90" x="45" y="34">
        <parameter key="repository_entry" value="//Samples/data/Golf"/>
      </operator>
      <operator activated="true" class="nominal_to_numerical" compatibility="7.1.001" expanded="true" height="103" name="Nominal to Numerical" width="90" x="179" y="34">
        <list key="comparison_groups"/>
      </operator>
      <operator activated="true" class="select_attributes" compatibility="7.1.001" expanded="true" height="82" name="Select Attributes" width="90" x="313" y="34">
        <parameter key="attribute_filter_type" value="single"/>
        <parameter key="attribute" value="Play"/>
        <parameter key="invert_selection" value="true"/>
        <parameter key="include_special_attributes" value="true"/>
      </operator>
      <operator activated="true" class="generate_attributes" compatibility="7.1.001" expanded="true" height="82" name="Generate Attributes" width="90" x="447" y="34">
        <list key="function_descriptions">
          <parameter key="label" value="&quot;a label&quot;"/>
        </list>
      </operator>
      <operator activated="true" class="set_role" compatibility="7.1.001" expanded="true" height="82" name="Set Role" width="90" x="581" y="34">
        <parameter key="attribute_name" value="label"/>
        <parameter key="target_role" value="label"/>
        <list key="set_additional_roles"/>
      </operator>
      <operator activated="true" class="support_vector_machine_libsvm" compatibility="7.1.001" expanded="true" height="82" name="SVM" width="90" x="782" y="34">
        <parameter key="svm_type" value="one-class"/>
        <list key="class_weights"/>
      </operator>
      <connect from_op="Retrieve Golf" from_port="output" to_op="Nominal to Numerical" to_port="example set input"/>
      <connect from_op="Nominal to Numerical" 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_op="Generate Attributes" to_port="example set input"/>
      <connect from_op="Generate Attributes" from_port="example set output" to_op="Set Role" to_port="example set input"/>
      <connect from_op="Set Role" from_port="example set output" to_op="SVM" to_port="training set"/>
      <connect from_op="SVM" from_port="model" to_port="result 1"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>
    </process>
  </operator>
</process>