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From "Tintarev, N" <>
Subject Re: Running mahout taste examples?
Date Wed, 26 Sep 2012 13:57:58 GMT

Thanks Sean,

Not sure what other information I could give? I want to run the existing
code to run the Jester example.
I couldn't find a tutorial for Eclipse, so I grabbed the code (using maven
as recommended) and tried to run it as I do my regular
Eclipse projects. The jester RecommenderEvaluatorRunner won't run, I get a

And yes, it looks like an eclipse specific issue (rather than Mahout per
se), and it's likely trivial. Still, words of wisdom from someone that's
done it from the IDE would be appreciated.


On 26/09/2012 14:29, "Sean Owen" <> wrote:

>This isn't really enough information... it sounds like you aren't
>actually including the right classes in the classpath of whatever you
>are running. -Djava.library.path has nothing do with it; that's for
>loading native libraries. You may want to review how you run any Java
>program and set its classpath. This is nothing to do with Mahout per
>On Wed, Sep 26, 2012 at 2:25 PM, Tintarev, N <> wrote:
>> Hi,
>> I am having a go with Mahout taste examples, but getting stuck with
>>trivial things.
>> I hope you don't mind giving me a pointer or two?
>> I'm running 64bit OSx and setting it all up in Eclipse.
>> I've set up M2e and checked out the code from SCM using maven.
>> No problems, project looks fine ­ a whole bunch of files and
>>directories, including the RecommenderEvalutatorRunners for each dataset.
>> Downloaded the Jester1 data set and converted it to .csv
>> Running the evaluator directly somehow  doesn't work ­ it's like it
>>doesn't have a main class (NoClassDefFoundError).
>> Setting main class with the full path or -Djava.library.path=
>> didn't bear
>>any fruit either.
>> The quick start which is based on command line suggests maven needs to
>>build a few things.
>> Is this possibly something I need to do in Eclipse? What did I forget
>>to do? :)
>> Best regards,
>> /Nava
>> The University of Aberdeen is a charity registered in Scotland, No

The University of Aberdeen is a charity registered in Scotland, No SC013683.

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