"(Normal ?) bug : log all criteria / Optimization of cluster model"

Hi,

It's to report a bug when the parameter log all criteria is checked for the optimization of a cluster model (Kmeans) .

When the process is executed, RapidMiner raise the following error : 

java.lang.ArrayIndexOutOfBoundsException

When RM create the Optimize Parameters results, each row has in theory a different length  - (length(row(i+1)) = length(row(i)) + 1 - 

because for each row , RM add  Avg. within centroid distance_cluster_i. So when RM try to create the second row, it raise an error

because the dimensions of the table change.

I hope it is understanble. Here the process : 

<?xml version="1.0" encoding="UTF-8"?><process version="8.0.001">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="8.0.001" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="open_file" compatibility="8.0.001" expanded="true" height="68" name="Open File" width="90" x="45" y="34">
        <parameter key="resource_type" value="URL"/>
        <parameter key="url" value="https://archive.ics.uci.edu/ml/machine-learning-databases/00292/Wholesale customers data.csv"/>
      </operator>
      <operator activated="true" class="read_csv" compatibility="8.0.001" expanded="true" height="68" name="Read CSV" width="90" x="179" y="34">
        <parameter key="csv_file" value="C:\Users\lueth\Desktop\Wholesale customers data.csv"/>
        <parameter key="column_separators" value=","/>
        <parameter key="first_row_as_names" value="false"/>
        <list key="annotations">
          <parameter key="0" value="Name"/>
        </list>
        <parameter key="encoding" value="windows-1252"/>
        <list key="data_set_meta_data_information">
          <parameter key="0" value="Channel.true.binominal.attribute"/>
          <parameter key="1" value="Region.true.polynominal.attribute"/>
          <parameter key="2" value="Fresh.true.integer.attribute"/>
          <parameter key="3" value="Milk.true.integer.attribute"/>
          <parameter key="4" value="Grocery.true.integer.attribute"/>
          <parameter key="5" value="Frozen.true.integer.attribute"/>
          <parameter key="6" value="Detergents_Paper.true.integer.attribute"/>
          <parameter key="7" value="Delicassen.true.integer.attribute"/>
        </list>
      </operator>
      <operator activated="true" class="select_attributes" compatibility="8.0.001" expanded="true" height="82" name="Select Attributes" width="90" x="313" y="34">
        <parameter key="attribute_filter_type" value="subset"/>
        <parameter key="attributes" value="Channel|Region"/>
        <parameter key="invert_selection" value="true"/>
      </operator>
      <operator activated="true" class="multiply" compatibility="8.0.001" expanded="true" height="145" name="Multiply" width="90" x="447" y="34"/>
      <operator activated="true" class="concurrency:optimize_parameters_grid" compatibility="8.0.001" expanded="true" height="124" name="Optimize Parameters (Grid)" width="90" x="715" y="391">
        <list key="parameters">
          <parameter key="Clustering.k" value="[2.0;10;10;linear]"/>
        </list>
        <parameter key="log_all_criteria" value="true"/>
        <process expanded="true">
          <operator activated="true" class="k_means" compatibility="8.0.001" expanded="true" height="82" name="Clustering" width="90" x="112" y="34">
            <parameter key="k" value="3"/>
          </operator>
          <operator activated="true" class="cluster_distance_performance" compatibility="8.0.001" expanded="true" height="103" name="Performance" width="90" x="313" y="34"/>
          <connect from_port="input 1" to_op="Clustering" to_port="example set"/>
          <connect from_op="Clustering" from_port="cluster model" to_op="Performance" to_port="cluster model"/>
          <connect from_op="Clustering" from_port="clustered set" to_op="Performance" to_port="example set"/>
          <connect from_op="Performance" from_port="performance" to_port="performance"/>
          <connect from_op="Performance" from_port="cluster model" to_port="model"/>
          <portSpacing port="source_input 1" spacing="0"/>
          <portSpacing port="source_input 2" spacing="0"/>
          <portSpacing port="sink_performance" spacing="0"/>
          <portSpacing port="sink_model" spacing="0"/>
          <portSpacing port="sink_output 1" spacing="0"/>
        </process>
      </operator>
      <operator activated="true" class="x_means" compatibility="8.0.001" expanded="true" height="82" name="X-Means" width="90" x="715" y="136"/>
      <operator activated="true" class="k_means" compatibility="8.0.001" expanded="true" height="82" name="k-Means" width="90" x="715" y="34">
        <parameter key="measure_types" value="NumericalMeasures"/>
      </operator>
      <operator activated="true" class="agglomerative_clustering" compatibility="8.0.001" expanded="true" height="82" name="Agglomerative Clustering" width="90" x="715" y="238">
        <parameter key="mode" value="AverageLink"/>
        <parameter key="measure_types" value="NumericalMeasures"/>
      </operator>
      <connect from_op="Open File" from_port="file" to_op="Read CSV" to_port="file"/>
      <connect from_op="Read CSV" from_port="output" to_op="Select Attributes" to_port="example set input"/>
      <connect from_op="Select Attributes" from_port="example set output" to_op="Multiply" to_port="input"/>
      <connect from_op="Multiply" from_port="output 1" to_op="k-Means" to_port="example set"/>
      <connect from_op="Multiply" from_port="output 2" to_op="X-Means" to_port="example set"/>
      <connect from_op="Multiply" from_port="output 3" to_op="Agglomerative Clustering" to_port="example set"/>
      <connect from_op="Multiply" from_port="output 4" to_op="Optimize Parameters (Grid)" to_port="input 1"/>
      <connect from_op="Optimize Parameters (Grid)" from_port="performance" to_port="result 6"/>
      <connect from_op="Optimize Parameters (Grid)" from_port="model" to_port="result 7"/>
      <connect from_op="Optimize Parameters (Grid)" from_port="parameter set" to_port="result 8"/>
      <connect from_op="X-Means" from_port="cluster model" to_port="result 4"/>
      <connect from_op="X-Means" from_port="clustered set" to_port="result 5"/>
      <connect from_op="k-Means" from_port="cluster model" to_port="result 1"/>
      <connect from_op="k-Means" from_port="clustered set" to_port="result 2"/>
      <connect from_op="Agglomerative Clustering" from_port="cluster model" 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"/>
      <portSpacing port="sink_result 5" spacing="0"/>
      <portSpacing port="sink_result 6" spacing="0"/>
      <portSpacing port="sink_result 7" spacing="0"/>
      <portSpacing port="sink_result 8" spacing="0"/>
      <portSpacing port="sink_result 9" spacing="0"/>
    </process>
  </operator>
</process>

What is your opinion about that, do you think it deserves "Product feedback" ?

Regards, 

Lionel