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From Sergey Bartunov <sbos....@gmail.com>
Subject Re: 20news
Date Mon, 04 Jul 2011 09:39:18 GMT
Stop, did you _train_ the classifier successfully before running the _test_?

On 4 July 2011 13:30, Vijay Santhanam <vijay.santhanam@gmail.com> wrote:
> Hi Sergey,
>
> I've tried using both the sh script file and following the instructions at
> https://cwiki.apache.org/MAHOUT/twenty-newsgroups.html - like you suggested.
> Both return the same results.
>
> I've uploaded my bayes-test-input folder to dropbox, the first file is
> here...
> http://dl.dropbox.com/u/7881451/bayes-test-input/alt.atheism.txt
>
> Thanks,
> Vijay
>
> On Mon, Jul 4, 2011 at 7:23 PM, Sergey Bartunov <sbos.net@gmail.com> wrote:
>
>> Paste somewhere your  bayes-test-input file.
>>
>> On 4 July 2011 13:20, Sergey Bartunov <sbos.net@gmail.com> wrote:
>> > Yes, I worked WITH hadoop, but there should be no difference.
>> >
>> > Why do you use examples/bin/build/20news-bayes.sh instead of direct
>> > running bin/mahout? Is it the same?
>> >
>> > On 4 July 2011 13:12, Vijay Santhanam <vijay.santhanam@gmail.com> wrote:
>> >> Thanks Sergey,
>> >>
>> >> I'm still receiving the same error after following those steps.
>> >> I've chosen not to use hadoop - does yours work WITH hadoop?
>> >>
>> >> A few bits of info that might be relevant.
>> >>
>> >> My examples/bin/work folder contains the expected folders from test data
>> >> preparation and training...
>> >> drwxr-xr-x@ 22 Vijay  staff  748 18 Mar  2003 20news-bydate-test
>> >> drwxr-xr-x@ 22 Vijay  staff  748 18 Mar  2003 20news-bydate-train
>> >> drwxr-xr-x   3 Vijay  staff  102  4 Jul 19:03 bayes-model
>> >> drwxr-xr-x  22 Vijay  staff  748  4 Jul 18:20 bayes-test-input
>> >> drwxr-xr-x  22 Vijay  staff  748  4 Jul 17:49 bayes-train-input
>> >>
>> >>
>> >> I appreciate your help, do you have any other suggestions?
>> >>
>> >> Regards,
>> >> Vijay
>> >>
>> >>
>> >> On Mon, Jul 4, 2011 at 6:58 PM, Sergey Bartunov <sbos.net@gmail.com>
>> wrote:
>> >>
>> >>> When I started with Mahout I had the same errors. In my case, I just
>> >>> didn't run PrepareTwentyNewsgroups. You may try to accurately repeat
>> >>> all steps from https://cwiki.apache.org/MAHOUT/twenty-newsgroups.html
>> >>>
>> >>> On 4 July 2011 12:52, Vijay Santhanam <vijay.santhanam@gmail.com>
>> wrote:
>> >>> > Hi All,
>> >>> >
>> >>> > I'm new to Mahout and I'm interested in experimenting with it's
>> >>> classifiers.
>> >>> >
>> >>> > Right now, I'm just trying to get up and running with the demo's
and
>> >>> > examples.
>> >>> >
>> >>> > After checking out the mahout trunk, I've tried running the
>> >>> classification
>> >>> > example 20news, but after running the
>> >>> ./examples/bin/build/20news-bayes.sh
>> >>> > script I get the following error during the classification phase.
>> >>> >
>> >>> > Does anyone else get the same thing? Or have any recommendations
>> about
>> >>> how
>> >>> > to fix it?
>> >>> > I'd just like to get a sample classifier working before I embark
on
>> my
>> >>> own
>> >>> > classification journey.
>> >>> >
>> >>> >
>> >>> > INFO: Loading model from:
>> >>> > {basePath=examples/bin/work/20news-bydate/bayes-model,
>> >>> classifierType=bayes,
>> >>> > alpha_i=1.0, dataSource=hdfs, gramSize=1, verbose=false,
>> encoding=UTF-8,
>> >>> > defaultCat=unknown,
>> >>> > testDirPath=examples/bin/work/20news-bydate/bayes-test-input}
>> >>> > Jul 4, 2011 6:28:25 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: Testing Bayes Classifier
>> >>> > Jul 4, 2011 6:28:27 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: Read 50000 feature weights
>> >>> > Jul 4, 2011 6:28:27 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: Read 100000 feature weights
>> >>> > Jul 4, 2011 6:28:28 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: 193370.88331085522
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: rec.sport.baseball -129829.34738930278 531784.7805631821
>> >>> > -0.2441388925268003
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: sci.crypt -193023.42370049533 531784.7805631821
>> -0.3629728242618669
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: rec.sport.hockey -167853.6159738822 531784.7805631821
>> >>> > -0.31564200802459647
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: talk.politics.guns -203524.0148974065 531784.7805631821
>> >>> > -0.3827187658170024
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: soc.religion.christian -163900.9258713857 531784.7805631821
>> >>> > -0.308209132457322
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: sci.electronics -142854.1677345925 531784.7805631821
>> >>> > -0.26863154598614886
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: comp.os.ms-windows.misc -531784.7805631821 531784.7805631821
>> -1.0
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: misc.forsale -143454.70176448982 531784.7805631821
>> >>> > -0.26976082619845826
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: talk.religion.misc -139428.73484148504 531784.7805631821
>> >>> > -0.2621901565024562
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: alt.atheism -139569.06867597546 531784.7805631821
>> >>> -0.2624540486626301
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: comp.windows.x -178029.10523376046 531784.7805631821
>> >>> > -0.33477660839638973
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: talk.politics.mideast -193075.00789450994 531784.7805631821
>> >>> > -0.36306982627452317
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: comp.sys.ibm.pc.hardware -138410.02049984262 531784.7805631821
>> >>> > -0.2602745049477736
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: comp.sys.mac.hardware -125200.9927438868 531784.7805631821
>> >>> > -0.23543545682389364
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: sci.space -192437.0009266271 531784.7805631821
>> -0.3618700797018455
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: rec.motorcycles -143142.20855440624 531784.7805631821
>> >>> > -0.26917319522159455
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: rec.autos -141800.97549909537 531784.7805631821
>> -0.2666510601317365
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: comp.graphics -166882.18654471825 531784.7805631821
>> >>> > -0.3138152738556811
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: talk.politics.misc -165196.84193278523 531784.7805631821
>> >>> > -0.3106460507535303
>> >>> > Jul 4, 2011 6:28:30 PM org.slf4j.impl.JCLLoggerAdapter info
>> >>> > INFO: sci.med -192698.5183245711 531784.7805631821
>> -0.36236185270382393
>> >>> > Exception in thread "main" java.lang.IllegalArgumentException:
Label
>> not
>> >>> > found: alt.atheism from
>> >>> >  at
>> >>> >
>> com.google.common.base.Preconditions.checkArgument(Preconditions.java:88)
>> >>> > at
>> >>> >
>> >>>
>> org.apache.mahout.classifier.ConfusionMatrix.getCount(ConfusionMatrix.java:93)
>> >>> >  at
>> >>> >
>> >>>
>> org.apache.mahout.classifier.ConfusionMatrix.incrementCount(ConfusionMatrix.java:113)
>> >>> > at
>> >>> >
>> >>>
>> org.apache.mahout.classifier.ConfusionMatrix.incrementCount(ConfusionMatrix.java:117)
>> >>> >  at
>> >>> >
>> >>>
>> org.apache.mahout.classifier.ConfusionMatrix.addInstance(ConfusionMatrix.java:85)
>> >>> > at
>> >>> >
>> >>>
>> org.apache.mahout.classifier.ResultAnalyzer.addInstance(ResultAnalyzer.java:67)
>> >>> >  at
>> >>> >
>> >>>
>> org.apache.mahout.classifier.bayes.TestClassifier.classifySequential(TestClassifier.java:244)
>> >>> > at
>> >>> >
>> >>>
>> org.apache.mahout.classifier.bayes.TestClassifier.main(TestClassifier.java:177)
>> >>> >  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> >>> > at
>> >>> >
>> >>>
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>> >>> >  at
>> >>> >
>> >>>
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>> >>> > at java.lang.reflect.Method.invoke(Method.java:597)
>> >>> >  at
>> >>> >
>> >>>
>> org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
>> >>> > at
>> org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
>> >>> >  at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:188)
>> >>> >
>> >>> >
>> >>> > Any help is great appreciated.
>> >>> >
>> >>> > Regards,
>> >>> > --
>> >>> >  Vijay Santhanam
>> >>> >  Software Engineer
>> >>> >
>> >>>
>> >>
>> >>
>> >>
>> >> --
>> >>  Vijay Santhanam
>> >>  Software Engineer
>> >>  http://au.linkedin.com/in/vijaysanthanam
>> >>  0407525087
>> >>
>> >
>>
>
>
>
> --
>  Vijay Santhanam
>  Software Engineer
>  http://au.linkedin.com/in/vijaysanthanam
>  0407525087
>

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