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From "Karan Jindal" <karan_jin...@students.iiit.ac.in>
Subject Reg: getting error while running kmeans using mahout
Date Tue, 05 Oct 2010 12:58:16 GMT
Hi all,

I tried to run kmeans algorithm using mahout but getting an error of which
I don't have any idea. Before running the algorithms, I converted the text
document dataset into vector writable format, for doing this I followed
the sequence of steps given here
https://cwiki.apache.org/MAHOUT/creating-vectors-from-text.html .

the error looks like this::

10/10/09 17:33:42 ERROR driver.MahoutDriver: MahoutDriver failed with
args: [-i, clusteringVec/vectors/, -o, clustering/output, -c, clusters,
-m, org.apache.mahout.common.distance.CosineDistanceMeasure, -x, 5, -w,
-d, 1, -k, 25, null]
Index: 1, Size: 1
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 1,
Size: 1
	at java.util.ArrayList.rangeCheck(ArrayList.java:571)
	at java.util.ArrayList.get(ArrayList.java:349)
	at
org.apache.mahout.clustering.kmeans.RandomSeedGenerator.buildRandom(RandomSeedGenerator.java:113)
	at
org.apache.mahout.clustering.kmeans.KMeansDriver.main(KMeansDriver.java:164)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	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:172)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:156)

Does this error suggest any mistake in the input file?
Can anyone tell the problem?



-Karan


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