I'm having trouble running the recommender samples.  I installed and built
mahout with the following comments, on Mac OS X.

svn co http://svn.apache.org/repos/asf/mahout/trunk mahout
cd mahout
mvn clean install

...
[INFO]
------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 38 minutes 39 seconds
[INFO] Finished at: Tue Oct 26 15:09:25 EDT 2010
[INFO] Final Memory: 94M/123M
[INFO]
------------------------------------------------------------------------

Then I tried to run the recommender sample:

cd examples

mvn -q exec:java
-Dexec.mainClass="org.apache.mahout.cf.taste.example.bookcrossing.BookCrossingRecommenderEvaluatorRunner"
[ERROR] BUILD ERROR

I see there is -Dexec.args="<OPTIONS>" in the documentation at
https://cwiki.apache.org/confluence/display/MAHOUT/RecommendationExamples,
but I have no idea what is supposed to go there.

What are the exact steps I need to do to run recommender samples?

Thanks,
Bob

Btw... one speedup for building is to use [mvn -DskipTests clean install] to
avoid re-running all of the unit tests.

On Tue, Oct 26, 2010 at 12:47 PM, Robert Stewart <[EMAIL PROTECTED]>wrote:

> I'm having trouble running the recommender samples.  I installed and built
> mahout with the following comments, on Mac OS X.
>
> svn co http://svn.apache.org/repos/asf/mahout/trunk mahout
> cd mahout
> mvn clean install
>
> ...
> [INFO]
> ------------------------------------------------------------------------
> [INFO] BUILD SUCCESSFUL
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: 38 minutes 39 seconds
> [INFO] Finished at: Tue Oct 26 15:09:25 EDT 2010
> [INFO] Final Memory: 94M/123M
> [INFO]
> ------------------------------------------------------------------------
>
> Then I tried to run the recommender sample:
>
> cd examples
>
> mvn -q exec:java
>
> -Dexec.mainClass="org.apache.mahout.cf.taste.example.bookcrossing.BookCrossingRecommenderEvaluatorRunner"
> [ERROR] BUILD ERROR
>
> I see there is -Dexec.args="<OPTIONS>" in the documentation at
> https://cwiki.apache.org/confluence/display/MAHOUT/RecommendationExamples,
> but I have no idea what is supposed to go there.
>
> What are the exact steps I need to do to run recommender samples?
>
> Thanks,
> Bob
>

All you should need is "-i <input file>" there. I'll re-add this info which
was lost in my last edit.

On Tue, Oct 26, 2010 at 8:47 PM, Robert Stewart <[EMAIL PROTECTED]>wrote:

> I'm having trouble running the recommender samples.  I installed and built
> mahout with the following comments, on Mac OS X.
>
>