"Problem displaying decision trees node labels"

Armand_Hirt

Hi. I am currently evaluating Rapidminer and going through the tutorial, so, my apologies if I am missing something obvious.

 

I have trouble getting decision tree graphs displayed right: the tree is see in Rapidminer Studio "results" pane is quite different from the screenshots online. Where labels are supposed to be, i see only a very tall grey rectangle (see attached PNG picture).

 

Any suggestions to fix this? 

 

<?xml version="1.0" encoding="UTF-8"?><process version="9.0.003">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="9.0.003" expanded="true" name="Process" origin="GENERATED_TUTORIAL">
    <process expanded="true">
      <operator activated="true" class="retrieve" compatibility="9.0.003" expanded="true" height="68" name="Retrieve Titanic" width="90" x="45" y="34">
        <parameter key="repository_entry" value="//Samples/data/Titanic"/>
      </operator>
      <operator activated="true" class="set_role" compatibility="9.0.003" expanded="true" height="82" name="Set Role" width="90" x="179" y="34">
        <parameter key="attribute_name" value="Survived"/>
        <parameter key="target_role" value="label"/>
        <list key="set_additional_roles"/>
      </operator>
      <operator activated="true" class="select_attributes" compatibility="9.0.003" expanded="true" height="82" name="Select Attributes" width="90" x="313" y="34">
        <parameter key="attribute_filter_type" value="subset"/>
        <parameter key="attribute" value="Life Boat"/>
        <parameter key="attributes" value="Survived|Sex|Passenger Fare|Passenger Class|No of Siblings or Spouses on Board|No of Parents or Children on Board|Age"/>
      </operator>
      <operator activated="true" class="concurrency:parallel_decision_tree" compatibility="9.0.003" expanded="true" height="103" name="Decision Tree" width="90" x="447" y="34">
        <parameter key="maximal_depth" value="5"/>
      </operator>
      <connect from_op="Retrieve Titanic" from_port="output" to_op="Set Role" to_port="example set input"/>
      <connect from_op="Set Role" 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="Decision Tree" to_port="training set"/>
      <connect from_op="Decision Tree" 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"/>
      <background height="232" location="//Samples/Tutorials/Basics/08/tutorial8" width="1502" x="26" y="47"/>
    </process>
  </operator>
</process>

 

Armand_Hirt

I did reboot, re-install the java JRE (and update it from v8-171 to v8-181) and restart Rapidminer. It solved the problem: the tree graphs now display properly.