Performance Error with weighted mean recall and weighted mean precision

Steve256

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?

MartinLiebig

Hi,

can you please check the rapidminer-studio.log file in your .RapidMiner folder? It should contain more information.

BR,

Martin

Steve256

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)

MartinLiebig

Hi,

looks like the example set you sent into the operator in has no prediction attribute? Can you share the process?

BR,

Martin

Steve256