[jira] [Updated] (MAHOUT-1266) Two minor problems in DistributedRowMatrix using MatrixMultiplication

2013-06-18 Thread Martin Illecker (JIRA) 

 [ 
https://issues.apache.org/jira/browse/MAHOUT-1266?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Martin Illecker updated MAHOUT-1266:


Description: 
Hello,

I think I have found two minor problems in *DistributedRowMatrix*.

In [1] the condition is wrong, because (l x m) * (m x n) = (l x n).
The condition should be like in [2]. 

And in *times*[3] the {{this.transpose()}} seems to be missing? (See [4])

Do you have any benchmark results for Mahout MatrixMultiplication?

Thanks!

Martin

[1] 
[https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L191-193]
[2] 
[https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L221-225]
[3] 
[https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L190-206]
[4] 
[https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L230-231]



  was:
Hello,

I think I have found two minor problems in *DistributedRowMatrix*.

In [1] the condition is wrong, because (l x m) * (m x n) = (l x n).
The condition should be like in [2]. 

And in *times*[3] the {{this.transpose()}} seems to be missing? (See [4])

Do you have any benchmark results for Mahout MatrixMultiplication?

Thanks!

Martin

[1] 
[https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L191-193]
[2] 
[https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L222-226]
[3] 
[https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L190-206]
[4] 
[https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L231-232]




> Two minor problems in DistributedRowMatrix using MatrixMultiplication
> -
>
> Key: MAHOUT-1266
> URL: https://issues.apache.org/jira/browse/MAHOUT-1266
> Project: Mahout
>  Issue Type: Bug
>  Components: Math
>Affects Versions: 0.7
>Reporter: Martin Illecker
>Priority: Trivial
>  Labels: newbie
>   Original Estimate: 10m
>  Remaining Estimate: 10m
>
> Hello,
> I think I have found two minor problems in *DistributedRowMatrix*.
> In [1] the condition is wrong, because (l x m) * (m x n) = (l x n).
> The condition should be like in [2]. 
> And in *times*[3] the {{this.transpose()}} seems to be missing? (See [4])
> Do you have any benchmark results for Mahout MatrixMultiplication?
> Thanks!
> Martin
> [1] 
> [https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L191-193]
> [2] 
> [https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L221-225]
> [3] 
> [https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L190-206]
> [4] 
> [https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L230-231]

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[jira] [Updated] (MAHOUT-1266) Two minor problems in DistributedRowMatrix using MatrixMultiplication

2013-06-18 Thread Martin Illecker (JIRA) 

 [ 
https://issues.apache.org/jira/browse/MAHOUT-1266?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Martin Illecker updated MAHOUT-1266:


Description: 
Hello,

I think I have found two minor problems in *DistributedRowMatrix*.

In [1] the condition is wrong, because (l x m) * (m x n) = (l x n).
The condition should be like in [2]. 

And in *times*[3] the {{this.transpose()}} seems to be missing? (See [4])

Do you have any benchmark results for Mahout MatrixMultiplication?

Thanks!

Martin

[1] 
[https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L191-193]
[2] 
[https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L222-226]
[3] 
[https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L190-206]
[4] 
[https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L231-232]



  was:
Hello,

I think I have found two minor problems in *DistributedRowMatrix*.

In [1] the condition is wrong, because (l x m) * (m x n) = (l x n).
The condition should be like in [2]. 

And in *times*[3] the {{this.transpose()}} seems to be missing? (See [4])

Do you have any benchmark results for Mahout MatrixMultiplication?

Thanks!

Martin

[1] 
[https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L191-193]
[2] 
[https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L222-226]
[3] 
[https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L190-206]
[4 
[https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L231-232]




> Two minor problems in DistributedRowMatrix using MatrixMultiplication
> -
>
> Key: MAHOUT-1266
> URL: https://issues.apache.org/jira/browse/MAHOUT-1266
> Project: Mahout
>  Issue Type: Bug
>  Components: Math
>Affects Versions: 0.7
>Reporter: Martin Illecker
>Priority: Trivial
>  Labels: newbie
>   Original Estimate: 10m
>  Remaining Estimate: 10m
>
> Hello,
> I think I have found two minor problems in *DistributedRowMatrix*.
> In [1] the condition is wrong, because (l x m) * (m x n) = (l x n).
> The condition should be like in [2]. 
> And in *times*[3] the {{this.transpose()}} seems to be missing? (See [4])
> Do you have any benchmark results for Mahout MatrixMultiplication?
> Thanks!
> Martin
> [1] 
> [https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L191-193]
> [2] 
> [https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L222-226]
> [3] 
> [https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L190-206]
> [4] 
> [https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L231-232]

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[jira] [Updated] (MAHOUT-1266) Two minor problems in DistributedRowMatrix using MatrixMultiplication

2013-06-18 Thread Martin Illecker (JIRA) 

 [ 
https://issues.apache.org/jira/browse/MAHOUT-1266?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Martin Illecker updated MAHOUT-1266:


Description: 
Hello,

I think I have found two minor problems in *DistributedRowMatrix*.

In [1] the condition is wrong, because (l x m) * (m x n) = (l x n).
The condition should be like in [2]. 

And in *times*[3] the {{this.transpose()}} seems to be missing? (See [4])

Do you have any benchmark results for Mahout MatrixMultiplication?

Thanks!

Martin

[1] 
[https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L191-193]
[2] 
[https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L222-226]
[3] 
[https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L190-206]
[4 
[https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L231-232]



  was:
Hello,

I think I have found two minor problems in *DistributedRowMatrix*.

In [1] the condition is wrong, because (l x m) * (m x n) = (l x n).
The condition should be like in [2]. 

And in *times*[3] the {{this.transpose()}} seems to be missing? (See [4])

Do you have any benchmark results for Mahout MatrixMultiplication?

Thanks!

Martin

[1|https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L191-193]
[2|https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L222-226]
[3|https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L190-206]
[4|https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L231-232]




> Two minor problems in DistributedRowMatrix using MatrixMultiplication
> -
>
> Key: MAHOUT-1266
> URL: https://issues.apache.org/jira/browse/MAHOUT-1266
> Project: Mahout
>  Issue Type: Bug
>  Components: Math
>Affects Versions: 0.7
>Reporter: Martin Illecker
>Priority: Trivial
>  Labels: newbie
>   Original Estimate: 10m
>  Remaining Estimate: 10m
>
> Hello,
> I think I have found two minor problems in *DistributedRowMatrix*.
> In [1] the condition is wrong, because (l x m) * (m x n) = (l x n).
> The condition should be like in [2]. 
> And in *times*[3] the {{this.transpose()}} seems to be missing? (See [4])
> Do you have any benchmark results for Mahout MatrixMultiplication?
> Thanks!
> Martin
> [1] 
> [https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L191-193]
> [2] 
> [https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L222-226]
> [3] 
> [https://github.com/apache/mahout/blob/trunk/core/src/main/java/org/apache/mahout/math/hadoop/DistributedRowMatrix.java#L190-206]
> [4 
> [https://github.com/millecker/applications/blob/master/hadoop/rootbeer/matrixmultiplication/src/at/illecker/hadoop/rootbeer/examples/matrixmultiplication/DistributedRowMatrix.java#L231-232]

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