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Performance Error with weighted mean recall and weighted mean precision

User: "Steve256"
Steve256
New Altair Community Member
Updated by Jocelyn
When I run the process, it's not running and showing an error message. This only happens when I select the weighted mean recall and weighted mean precision parameters from performance. Does anyone know who to fix this?

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    User: "MartinLiebig"
    MartinLiebig
    Altair Employee
    Hi,
    can you please check the rapidminer-studio.log file in your .RapidMiner folder? It should contain more information.

    BR,
    Martin
    User: "Steve256"
    Steve256
    New Altair Community Member
    OP
    I checked it and it contains this but I don't understand where is the problem



    Jan 24, 2022 6:43:58 PM com.rapidminer.gui.ProcessThread run
    SEVERE: java.lang.NullPointerException
    java.lang.NullPointerException
    at com.rapidminer.operator.performance.WeightedMultiClassPerformance.countExample(WeightedMultiClassPerformance.java:185)
    at com.rapidminer.operator.performance.AbstractPerformanceEvaluator.evaluate(AbstractPerformanceEvaluator.java:470)
    at com.rapidminer.operator.performance.AbstractPerformanceEvaluator.evaluate(AbstractPerformanceEvaluator.java:393)
    at com.rapidminer.operator.performance.AbstractPerformanceEvaluator.doWork(AbstractPerformanceEvaluator.java:256)
    at com.rapidminer.operator.Operator.execute(Operator.java:1023)
    at com.rapidminer.operator.execution.SimpleUnitExecutor.execute(SimpleUnitExecutor.java:77)
    at com.rapidminer.operator.ExecutionUnit$2.run(ExecutionUnit.java:805)
    at com.rapidminer.operator.ExecutionUnit$2.run(ExecutionUnit.java:800)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.rapidminer.operator.ExecutionUnit.execute(ExecutionUnit.java:800)
    at com.rapidminer.operator.OperatorChain.doWork(OperatorChain.java:423)
    at com.rapidminer.operator.Operator.execute(Operator.java:1023)
    at com.rapidminer.Process.executeRoot(Process.java:1464)
    at com.rapidminer.Process.lambda$executeRootInPool$5(Process.java:1443)
    at com.rapidminer.studio.concurrency.internal.AbstractConcurrencyContext$AdaptedCallable.exec(AbstractConcurrencyContext.java:362)
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
    at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:175)

    User: "MartinLiebig"
    MartinLiebig
    Altair Employee
    Updated by MartinLiebig
    Hi,
    looks like the example set you sent into the operator in has no prediction attribute? Can you share the process?

    BR,
    Martin
    User: "Steve256"
    Steve256
    New Altair Community Member
    OP

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