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https://issues.apache.org/jira/browse/MAHOUT-1628?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suminda Dharmasena updated MAHOUT-1628:
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Description:
Given data frame :
C = A + B
If some cells in A or B are updated:
1) calculate C using the latest values in A and B when C is accessed (pull)
2) when A or B is updated then propagate changes to C (push)
You can use different operator for = in the above cases
was:
Given data frame :
C = A + B
If some cells in A or B are updated:
1) calculate only when C is used using the latest values in A and B
2) when A or B is updated then propagate changes to C
You can use different operator for = in the above cases
> Propagation of Updates in DF
> ----------------------------
>
> Key: MAHOUT-1628
> URL: https://issues.apache.org/jira/browse/MAHOUT-1628
> Project: Mahout
> Issue Type: New Feature
> Reporter: Suminda Dharmasena
>
> Given data frame :
> C = A + B
> If some cells in A or B are updated:
> 1) calculate C using the latest values in A and B when C is accessed (pull)
> 2) when A or B is updated then propagate changes to C (push)
> You can use different operator for = in the above cases
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