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From "Sergio D." PĂ©rez <ser...@jovenclub.cu>
Subject Problems installing Mahout
Date Mon, 05 Apr 2010 20:20:26 GMT
Hello All !
I'm really new in mahout !!! and i have a beginner question.
Yesterday i downloaded mahout from SVN , i changed to core and when i
make mvn
compile everything was ok , then i make mvn install i get a message.

[INFO]
------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO]
------------------------------------------------------------------------
[INFO] There are test failures.

so when i go to see what happend, in the file
/trunk/core/target/surefire-reports/org.apache.mahout.clustering.TestPrintableInterface.txt
i see ...

---------------------------------------------------------------------
Test set: org.apache.mahout.clustering.TestPrintableInterface
--------------------------------------------------------------------
Tests run: 22, Failures: 19, Errors: 0, Skipped: 0, Time elapsed: 0.119
sec
<<<FAILURE!
testDirichletNormalModel(org.apache.mahout.clustering.TestPrintableInterface)
Time elapsed: 0.008 sec  <<< FAILURE!
junit.framework.ComparisonFailure: format expected:<nm{n=0 m=[1[.100,
2.200,
3.300] sd=0.]75}> but was:<nm{n=0 m=[1[,100, 2,200, 3,300] sd=0,]75}>
	at junit.framework.Assert.assertEquals(Assert.java:81)
	at
org.apache.mahout.clustering.TestPrintableInterface.testDirichletNormalModel
(TestPrintableInterface.java:55)
	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 junit.framework.TestCase.runTest(TestCase.java:168)
	at junit.framework.TestCase.runBare(TestCase.java:134)
	at junit.framework.TestResult$1.protect(TestResult.java:110)
	at junit.framework.TestResult.runProtected(TestResult.java:128)
	at junit.framework.TestResult.run(TestResult.java:113)
	at junit.framework.TestCase.run(TestCase.java:124)
	at junit.framework.TestSuite.runTest(TestSuite.java:232)
	at junit.framework.TestSuite.run(TestSuite.java:227)
	at
org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
	at
org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:59)
	at
org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet
(AbstractDirectoryTestSuite.java:115)
	at
org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute
(AbstractDirectoryTestSuite.java:102)
	at org.apache.maven.surefire.Surefire.run(Surefire.java:180)
	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.maven.surefire.booter.SurefireBooter.runSuitesInProcess
(SurefireBooter.java:350)
	at
org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1021)

I have not copied the entire text because i saw the same error in the
others
error's reports. 
So I have been looking for a problem in the method code 
testDirichletNormalModel() seems to be that the variable model in
TestPrintableInterface class has not
the format expected.
Could help me with this.
I have another question, even with this error I can use the Mahout to go
experimenting. I must implement a news recommendation system and
according to
what I've read Mahout is the most appropriate tool for these things.

Thank you very much
Sergio

PS: Sorry for my English I'm Cuban and I do not write well in English.



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