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Posted to dev@hama.apache.org by "Edward J. Yoon (JIRA)" <ji...@apache.org> on 2008/10/13 08:34:46 UTC
[jira] Created: (HAMA-80) Add identity(int m, int n) which returns
an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
--------------------------------------------------------------------------------------------------------
Key: HAMA-80
URL: https://issues.apache.org/jira/browse/HAMA-80
Project: Hama
Issue Type: New Feature
Components: implementation
Reporter: Edward J. Yoon
Assignee: Edward J. Yoon
Priority: Minor
Fix For: 0.1.0
double[][] X;
for (int i = 0; i < m; i++) {
for (int j = 0; j < n; j++) {
X[i][j] = (i == j ? 1.0 : 0.0);
}
}
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Re: [jira] Commented: (HAMA-80) Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Edward J. Yoon" <ed...@apache.org>.
Well, I'm not sure it is possible simply. However, we should able to
get the inverse of random/identity/.. matrix so let's store it at this
moment. :)
/Edward
On Mon, Oct 13, 2008 at 6:34 PM, Samuel Guo (JIRA) <ji...@apache.org> wrote:
>
> [ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638992#action_12638992 ]
>
> Samuel Guo commented on HAMA-80:
> --------------------------------
>
> Hmm, can we create some virtual InputFormat & OutFormat for Identity Matrix, so that It can be used in MapReduce ?
>
>> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
>> --------------------------------------------------------------------------------------------------------
>>
>> Key: HAMA-80
>> URL: https://issues.apache.org/jira/browse/HAMA-80
>> Project: Hama
>> Issue Type: New Feature
>> Components: implementation
>> Reporter: Edward J. Yoon
>> Assignee: Edward J. Yoon
>> Priority: Minor
>> Fix For: 0.1.0
>>
>> Attachments: HAMA-80.patch
>>
>>
>> double[][] X;
>> for (int i = 0; i < m; i++) {
>> for (int j = 0; j < n; j++) {
>> X[i][j] = (i == j ? 1.0 : 0.0);
>> }
>> }
>
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Best regards, Edward J. Yoon
edwardyoon@apache.org
http://blog.udanax.org
[jira] Commented: (HAMA-80) Add identity(int m, int n) which
returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Samuel Guo (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638992#action_12638992 ]
Samuel Guo commented on HAMA-80:
--------------------------------
Hmm, can we create some virtual InputFormat & OutFormat for Identity Matrix, so that It can be used in MapReduce ?
> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
> --------------------------------------------------------------------------------------------------------
>
> Key: HAMA-80
> URL: https://issues.apache.org/jira/browse/HAMA-80
> Project: Hama
> Issue Type: New Feature
> Components: implementation
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-80.patch
>
>
> double[][] X;
> for (int i = 0; i < m; i++) {
> for (int j = 0; j < n; j++) {
> X[i][j] = (i == j ? 1.0 : 0.0);
> }
> }
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[jira] Commented: (HAMA-80) Add identity(int m, int n) which
returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Edward J. Yoon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638976#action_12638976 ]
Edward J. Yoon commented on HAMA-80:
------------------------------------
Oh, that's great. It is not neccessary to store.
Thanks ;)
> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
> --------------------------------------------------------------------------------------------------------
>
> Key: HAMA-80
> URL: https://issues.apache.org/jira/browse/HAMA-80
> Project: Hama
> Issue Type: New Feature
> Components: implementation
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-80.patch
>
>
> double[][] X;
> for (int i = 0; i < m; i++) {
> for (int j = 0; j < n; j++) {
> X[i][j] = (i == j ? 1.0 : 0.0);
> }
> }
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[jira] Commented: (HAMA-80) Add identity(int m, int n) which
returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Edward J. Yoon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638981#action_12638981 ]
Edward J. Yoon commented on HAMA-80:
------------------------------------
Hmm... BTW, If we want to get the inverse of identity matrix + rank-one matrix (or other some case), we should implement each case for parallelization. In this stage, let's store it.
> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
> --------------------------------------------------------------------------------------------------------
>
> Key: HAMA-80
> URL: https://issues.apache.org/jira/browse/HAMA-80
> Project: Hama
> Issue Type: New Feature
> Components: implementation
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-80.patch
>
>
> double[][] X;
> for (int i = 0; i < m; i++) {
> for (int j = 0; j < n; j++) {
> X[i][j] = (i == j ? 1.0 : 0.0);
> }
> }
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[jira] Updated: (HAMA-80) Add identity(int m, int n) which returns
an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Edward J. Yoon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Edward J. Yoon updated HAMA-80:
-------------------------------
Status: Open (was: Patch Available)
Canceling.
> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
> --------------------------------------------------------------------------------------------------------
>
> Key: HAMA-80
> URL: https://issues.apache.org/jira/browse/HAMA-80
> Project: Hama
> Issue Type: New Feature
> Components: implementation
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-80.patch
>
>
> double[][] X;
> for (int i = 0; i < m; i++) {
> for (int j = 0; j < n; j++) {
> X[i][j] = (i == j ? 1.0 : 0.0);
> }
> }
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[jira] Commented: (HAMA-80) Add identity(int m, int n) which
returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Samuel Guo (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638959#action_12638959 ]
Samuel Guo commented on HAMA-80:
--------------------------------
Why we need m & n both?
In linear algebra, the identity matrix or unit matrix of size n is the n-by-n square matrix with ones on the main diagonal and zeros elsewhere.
And I don't think it's good to store an identity matrix as DenseMatrix. It may not efficient.
Maybe we can create another class, sth like:
class IdentityMatrix implements Matrix {
....
public double get(int i, int j) throws IOException {
return (i==j)?1:0;
}
....
}
it is not neccessary to store the matrix in hbase.
> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
> --------------------------------------------------------------------------------------------------------
>
> Key: HAMA-80
> URL: https://issues.apache.org/jira/browse/HAMA-80
> Project: Hama
> Issue Type: New Feature
> Components: implementation
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-80.patch
>
>
> double[][] X;
> for (int i = 0; i < m; i++) {
> for (int j = 0; j < n; j++) {
> X[i][j] = (i == j ? 1.0 : 0.0);
> }
> }
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[jira] Commented: (HAMA-80) Add identity(int m, int n) which
returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Hudson (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638956#action_12638956 ]
Hudson commented on HAMA-80:
----------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12391979/HAMA-80.patch
against trunk revision 703915.
@author +1. The patch does not contain any @author tags.
tests included -1. The patch doesn't appear to include any new or modified tests.
Please justify why no tests are needed for this patch.
javadoc +1. The javadoc tool did not generate any warning messages.
javac +1. The applied patch does not generate any new javac compiler warnings.
release audit +1. The applied patch does not generate any new release audit warnings.
findbugs +1. The patch does not introduce any new Findbugs warnings.
core tests +1. The patch passed core unit tests.
Test results: http://hudson.zones.apache.org/hudson/job/Hama-Patch/90/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hama-Patch/90/artifact/trunk/build/reports/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hama-Patch/90/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hama-Patch/90/console
This message is automatically generated.
> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
> --------------------------------------------------------------------------------------------------------
>
> Key: HAMA-80
> URL: https://issues.apache.org/jira/browse/HAMA-80
> Project: Hama
> Issue Type: New Feature
> Components: implementation
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-80.patch
>
>
> double[][] X;
> for (int i = 0; i < m; i++) {
> for (int j = 0; j < n; j++) {
> X[i][j] = (i == j ? 1.0 : 0.0);
> }
> }
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[jira] Resolved: (HAMA-80) Add identity(int m, int n) which returns
an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Edward J. Yoon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Edward J. Yoon resolved HAMA-80.
--------------------------------
Resolution: Fixed
I just committed this. Let's optimizing next step.
> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
> --------------------------------------------------------------------------------------------------------
>
> Key: HAMA-80
> URL: https://issues.apache.org/jira/browse/HAMA-80
> Project: Hama
> Issue Type: New Feature
> Components: implementation
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-80.patch
>
>
> double[][] X;
> for (int i = 0; i < m; i++) {
> for (int j = 0; j < n; j++) {
> X[i][j] = (i == j ? 1.0 : 0.0);
> }
> }
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[jira] Commented: (HAMA-80) Add identity(int m, int n) which
returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Samuel Guo (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12639015#action_12639015 ]
Samuel Guo commented on HAMA-80:
--------------------------------
hmm, ok.
> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
> --------------------------------------------------------------------------------------------------------
>
> Key: HAMA-80
> URL: https://issues.apache.org/jira/browse/HAMA-80
> Project: Hama
> Issue Type: New Feature
> Components: implementation
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-80.patch
>
>
> double[][] X;
> for (int i = 0; i < m; i++) {
> for (int j = 0; j < n; j++) {
> X[i][j] = (i == j ? 1.0 : 0.0);
> }
> }
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[jira] Updated: (HAMA-80) Add identity(int m, int n) which returns
an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Edward J. Yoon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Edward J. Yoon updated HAMA-80:
-------------------------------
Status: Patch Available (was: Open)
It'll be used for the inverse matrix or some decompositions.
Submit to hudson.
> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
> --------------------------------------------------------------------------------------------------------
>
> Key: HAMA-80
> URL: https://issues.apache.org/jira/browse/HAMA-80
> Project: Hama
> Issue Type: New Feature
> Components: implementation
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-80.patch
>
>
> double[][] X;
> for (int i = 0; i < m; i++) {
> for (int j = 0; j < n; j++) {
> X[i][j] = (i == j ? 1.0 : 0.0);
> }
> }
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[jira] Updated: (HAMA-80) Add identity(int m, int n) which returns
an m-by-n matrix with ones on the diagonal and zeros elsewhere.
Posted by "Edward J. Yoon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HAMA-80?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Edward J. Yoon updated HAMA-80:
-------------------------------
Attachment: HAMA-80.patch
added to DenseMatrix.
> Add identity(int m, int n) which returns an m-by-n matrix with ones on the diagonal and zeros elsewhere.
> --------------------------------------------------------------------------------------------------------
>
> Key: HAMA-80
> URL: https://issues.apache.org/jira/browse/HAMA-80
> Project: Hama
> Issue Type: New Feature
> Components: implementation
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Minor
> Fix For: 0.1.0
>
> Attachments: HAMA-80.patch
>
>
> double[][] X;
> for (int i = 0; i < m; i++) {
> for (int j = 0; j < n; j++) {
> X[i][j] = (i == j ? 1.0 : 0.0);
> }
> }
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