Hi Richard,
I have based this experiment on the PairTwentyNewsgroupsDemo from the DKPro
examples. The CPE would be build during the experiment execution, I guess.
I have just tried to re-run the example, but now I am getting the same
exception:
(using the 0.8.0 snapshort version of TC).
2015-07-12 11:01:31 DEBUG [main] (DefaultLoggingService) -
[MetaInfoTask-TwentyNewsgroupsTrainTest-966ab1a7-2874-11e5-b53c-37fcf6476d26]
Problem stack trace:
java.lang.NullPointerException
at org.apache.uima.fit.cpe.CpeBuilder.createCpe(CpeBuilder.java:159)
at
de.tudarmstadt.ukp.dkpro.lab.uima.engine.cpe.CpeExecutionEngine.run(CpeExecutionEngine.java:93)
at
de.tudarmstadt.ukp.dkpro.lab.task.impl.BatchTask.runNewExecution(BatchTask.java:350)
at
de.tudarmstadt.ukp.dkpro.lab.task.impl.BatchTask.executeConfiguration(BatchTask.java:255)
at
de.tudarmstadt.ukp.dkpro.lab.task.impl.BatchTask.execute(BatchTask.java:185)
at
de.tudarmstadt.ukp.dkpro.tc.ml.ExperimentTrainTest.execute(ExperimentTrainTest.java:91)
at
de.tudarmstadt.ukp.dkpro.lab.engine.impl.ExecutableTaskEngine.run(ExecutableTaskEngine.java:55)
at
de.tudarmstadt.ukp.dkpro.lab.engine.impl.DefaultTaskExecutionService.run(DefaultTaskExecutionService.java:48)
at de.tudarmstadt.ukp.dkpro.lab.Lab.run(Lab.java:97)
at
de.tudarmstadt.ukp.dkpro.tc.examples.single.pair.PairTwentyNewsgroupsDemo.runTrainTest(PairTwentyNewsgroupsDemo.java:147)
at
de.tudarmstadt.ukp.dkpro.tc.examples.single.pair.PairTwentyNewsgroupsDemo.main(PairTwentyNewsgroupsDemo.java:84)
Cheers,
Martin
> Am 11.07.2015 um 19:10 schrieb Richard Eckart de Castilho <[email protected]>:
>
> Hi,
>
> how to you build your CPE? The CAS processors should be set during
> setAnalysisEngine(...).
>
> Cheers,
>
> -- Richard
>
> On 11.07.2015, at 10:18, Martin Wunderlich <[email protected]> wrote:
>
>> Hi all,
>>
>> I am trying to run a pair-wise classification experiment using the DKPro TC
>> framework. The execution fails during the meta-info stage due to a
>> NullPointerException that originates in the CpeBuilder class from UIMAfit
>> v.2.1.0 (hence the post to this list and not the DKpro list). I had a closer
>> look at the code and the NPE is triggered at the following line in the
>> CpeBuilder:
>>
>> cpeDesc.getCpeCasProcessors().setPoolSize(maxProcessingUnitThreadCount + 2);
>>
>> The underlying root cause is that the casProcessors object returned by the
>> call to cpeDesc is Null, but I don’t understand why. The cpeDesc lists a
>> number of fields as having Null values:
>>
>> org.apache.uima.collection.impl.metadata.cpe.CpeDescriptionImpl:
>> casInitializer = NULL
>> configParameterSettings = NULL
>> configurationParameterSettings = NULL
>> import = NULL
>> sofaNameMappings = NULL
>> configurationParameterSettings = NULL
>> cpeCasProcessors = NULL
>> outputQueue = NULL
>> startAt = NULL
>> startingEntityId = NULL
>>
>>
>> Unfortunately, I am not too familiar with the inner workings of the
>> UIMA(fit) framework so I am not sure how, why and where these fields were
>> set to Null.
>> Could someone perhaps point me in the right direction where I should dig
>> deeper to identify the cause for this problem?
>>
>> Thanks a lot.
>>
>> Cheers,
>>
>> Martin
>
