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https://issues.apache.org/jira/browse/MADLIB-1227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Frank McQuillan updated MADLIB-1227:
------------------------------------
Description:
Related to
https://issues.apache.org/jira/browse/MADLIB-1226
Add check to MLP classification code to check that the dependent var has been
1-hot encoded by accident, and error out if that is not the case.
This is to avoid the case of passing INTs as dep var to MLP that have not been
1-hot encoded and having it run classification and not converge, or give
erroneous results, and giving no notification to the user about the problem.
OK to pick 1st row and check one that y array value for encoding looks like:
{code}
[0.0, 1.0, 0.0 ...]
{code}
i.e., all 0's and just one 1
was:
Related to
https://issues.apache.org/jira/browse/MADLIB-1226
Add check to MLP classification code to check that the dependent var has been
1-hot encoded by accident, and error out if that is not the case.
This is to avoid the case of passing INTs as dep var to MLP that have not been
1-hot encoded and having it run classification and not converge, or give
erroneous results, and giving no notification to the user about the problem.
> In MLP classification with mini-batch, check for 1-hot encoding of dependent
> variable
> -------------------------------------------------------------------------------------
>
> Key: MADLIB-1227
> URL: https://issues.apache.org/jira/browse/MADLIB-1227
> Project: Apache MADlib
> Issue Type: Improvement
> Reporter: Frank McQuillan
> Priority: Minor
> Fix For: v1.14
>
>
> Related to
> https://issues.apache.org/jira/browse/MADLIB-1226
> Add check to MLP classification code to check that the dependent var has been
> 1-hot encoded by accident, and error out if that is not the case.
> This is to avoid the case of passing INTs as dep var to MLP that have not
> been 1-hot encoded and having it run classification and not converge, or give
> erroneous results, and giving no notification to the user about the problem.
> OK to pick 1st row and check one that y array value for encoding looks like:
> {code}
> [0.0, 1.0, 0.0 ...]
> {code}
> i.e., all 0's and just one 1
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