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Posted to dev@mahout.apache.org by "Sebastian Schelter (JIRA)" <ji...@apache.org> on 2013/01/18 08:46:12 UTC
[jira] [Updated] (MAHOUT-1077) apparent spectral kmeans bug
[ https://issues.apache.org/jira/browse/MAHOUT-1077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sebastian Schelter updated MAHOUT-1077:
---------------------------------------
Resolution: Fixed
Fix Version/s: 0.8
Assignee: Sebastian Schelter
Status: Resolved (was: Patch Available)
> apparent spectral kmeans bug
> ----------------------------
>
> Key: MAHOUT-1077
> URL: https://issues.apache.org/jira/browse/MAHOUT-1077
> Project: Mahout
> Issue Type: Bug
> Components: Clustering
> Affects Versions: 0.7
> Reporter: Paul Hubenig
> Assignee: Sebastian Schelter
> Labels: patch
> Fix For: 0.8
>
> Attachments: MAHOUT-1077.patch
>
>
> Using example data at: https://cwiki.apache.org/MAHOUT/spectral-clustering.html
> 0,0,0
> 0,1,0.8
> 0,2,0.5
> 1,0,0.8
> 1,1,0
> 1,2,0.9
> 2,0,0.5
> 2,1,0.9
> 2,2,0
> Using 0.7 distribution.
> mahout spectralkmeans -i file:///Users/phubenig/affExGraph.txt -o file:///Users/phubenig/spectralEx -k 2 -d 3 -x 30 -cd 0.01 -ow
> 12/09/05 16:14:00 INFO mapred.JobClient: Combine output records=1
> 12/09/05 16:14:00 INFO mapred.JobClient: Reduce output records=1
> 12/09/05 16:14:00 INFO mapred.JobClient: Map output records=1
> 12/09/05 16:14:00 INFO lanczos.LanczosSolver: 2 passes through the corpus so far...
> Exception in thread "main" org.apache.mahout.math.IndexException: Index 2 is outside allowable range of [0,2)
> at org.apache.mahout.math.AbstractMatrix.set(AbstractMatrix.java:479)
> at org.apache.mahout.math.decomposer.lanczos.LanczosSolver.solve(LanczosSolver.java:132)
> at org.apache.mahout.math.hadoop.decomposer.DistributedLanczosSolver.runJob(DistributedLanczosSolver.java:73)
> at org.apache.mahout.clustering.spectral.kmeans.SpectralKMeansDriver.run(SpectralKMeansDriver.java:148)
> at org.apache.mahout.clustering.spectral.kmeans.SpectralKMeansDriver.run(SpectralKMeansDriver.java:86)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
> at org.apache.mahout.clustering.spectral.kmeans.SpectralKMeansDriver.main(SpectralKMeansDriver.java:53)
> 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:195)
> 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.RunJar.main(RunJar.java:156)
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