[jira] [Commented] (MAHOUT-1005) Nuke Colt math functions that remain untested - The Matrix edition

[Ted Dunning (JIRA)]

    [ 
https://issues.apache.org/jira/browse/MAHOUT-1005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13268026#comment-13268026
 ] 

Ted Dunning commented on MAHOUT-1005:
-------------------------------------

Jake,

Does this ring a bell?

{code}

    <error message="7" 
type="java.lang.ArrayIndexOutOfBoundsException">java.lang.ArrayIndexOutOfBoundsException:
 7
        at org.apache.mahout.math.DenseVector.getQuick(DenseVector.java:110)
        at 
org.apache.mahout.math.solver.EigenDecomposition.tql2(EigenDecomposition.java:294)
        at 
org.apache.mahout.math.solver.EigenDecomposition.&lt;init&gt;(EigenDecomposition.java:78)
        at 
org.apache.mahout.math.solver.EigenDecomposition.&lt;init&gt;(EigenDecomposition.java:62)
        at 
org.apache.mahout.math.decomposer.lanczos.LanczosSolver.solve(LanczosSolver.java:141)
        at 
org.apache.mahout.math.hadoop.decomposer.DistributedLanczosSolver.run(DistributedLanczosSolver.java:201)
        at 
org.apache.mahout.math.hadoop.decomposer.DistributedLanczosSolver.run(DistributedLanczosSolver.java:124)
        at 
org.apache.mahout.math.hadoop.decomposer.DistributedLanczosSolver$DistributedLanczosSolverJob.run(DistributedLanczosSolver.java:284)
        at 
org.apache.mahout.math.hadoop.decomposer.TestDistributedLanczosSolverCLI.testDistributedLanczosSolverCLI(TestDistributedLanczosSolverCLI.java:76)
        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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
        at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
        at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
        at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
        at 
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
        at 
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
        at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
        at 
org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:119)
        at 
org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:101)
        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)
:
{code}
                
> Nuke Colt math functions that remain untested - The Matrix edition
> ------------------------------------------------------------------
>
>                 Key: MAHOUT-1005
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1005
>             Project: Mahout
>          Issue Type: Bug
>          Components: Math
>    Affects Versions: 0.5, 0.6
>            Reporter: Ted Dunning
>            Assignee: Ted Dunning
>             Fix For: 0.7
>
>         Attachments: MAHOUT-1005.patch
>
>
> We are down to very few references to Colt's matrix capabilities.
> I have implemented a new eigen-solver (with tests) and updated the Lanczos 
> code to use it.  I also have nuked all of the DoubleMatrix*d and related 
> classes and consolidated several others.

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