Hello,
I think I have misconfigured the Performance (Costs) node, but do not see the error. It results in the following exception:
SEVERE: Process failed: operator cannot be executed. Check the log messages...
java.lang.NullPointerException
at com.rapidminer.example.Example.getNominalValue(Example.java:102)
at com.rapidminer.operator.performance.cost.ClassificationCostCriterion.countExample(ClassificationCostCriterion.java:128)
at com.rapidminer.operator.performance.cost.CostEvaluator.doWork(CostEvaluator.java:127)
at com.rapidminer.operator.Operator.execute(Operator.java:834)
at com.rapidminer.operator.execution.SimpleUnitExecutor.execute(SimpleUnitExecutor.java:51)
at com.rapidminer.operator.ExecutionUnit.execute(ExecutionUnit.java:711)
at com.rapidminer.operator.validation.ValidationChain.executeEvaluator(ValidationChain.java:223)
at com.rapidminer.operator.validation.ValidationChain.evaluate(ValidationChain.java:324)
at com.rapidminer.operator.validation.SplitValidationOperator.estimatePerformance(SplitValidationOperator.java:160)
at com.rapidminer.operator.validation.ValidationChain.doWork(ValidationChain.java:273)
at com.rapidminer.operator.Operator.execute(Operator.java:834)
at com.rapidminer.operator.execution.SimpleUnitExecutor.execute(SimpleUnitExecutor.java:51)
at com.rapidminer.operator.ExecutionUnit.execute(ExecutionUnit.java:711)
at com.rapidminer.operator.OperatorChain.doWork(OperatorChain.java:379)
at com.rapidminer.operator.Operator.execute(Operator.java:834)
at com.rapidminer.Process.run(Process.java:925)
at com.rapidminer.Process.run(Process.java:848)
at com.rapidminer.Process.run(Process.java:807)
at com.rapidminer.Process.run(Process.java:802)
at com.rapidminer.Process.run(Process.java:792)
at com.rapidminer.gui.ProcessThread.run(ProcessThread.java:63)
With the following process:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.2.008">
<context>
<input>
<location>//Samples/data/Iris</location>
</input>
<output/>
<macros/>
</context>
<operator activated="true" class="process" compatibility="5.2.008" expanded="true" name="Process">
<process expanded="true" height="152" width="145">
<operator activated="true" class="split_validation" compatibility="5.2.008" expanded="true" height="112" name="Validation" width="90" x="45" y="30">
<process expanded="true" height="445" width="258">
<operator activated="true" class="auto_mlp" compatibility="5.2.008" expanded="true" height="76" name="AutoMLP" width="90" x="45" y="30"/>
<connect from_port="training" to_op="AutoMLP" to_port="training set"/>
<connect from_op="AutoMLP" 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" height="445" width="258">
<operator activated="true" class="performance_costs" compatibility="5.2.008" expanded="true" height="76" name="Performance" width="90" x="45" y="30">
<parameter key="cost_matrix" value="[0.0 1.0 10.0;3.0 0.0 0.3;1.0 1.0 0.0]"/>
<enumeration key="class_order_definition">
<parameter key="class_name" value="Iris-setosa"/>
<parameter key="class_name" value="Iris-virginica"/>
<parameter key="class_name" value="Iris-versicolor"/>
</enumeration>
</operator>
<connect from_port="test set" to_op="Performance" to_port="example set"/>
<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_port="input 1" to_op="Validation" to_port="training"/>
<connect from_op="Validation" from_port="model" to_port="result 2"/>
<connect from_op="Validation" from_port="training" to_port="result 1"/>
<connect from_op="Validation" from_port="averagable 1" to_port="result 3"/>
<portSpacing port="source_input 1" spacing="0"/>
<portSpacing port="source_input 2" 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>
Should I open a ticket asking for a better error message, or I made an obvious mistake?
Thanks, gabor
