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https://issues.apache.org/jira/browse/SPARK-7176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-7176:
-----------------------------------
Assignee: Joseph K. Bradley (was: Apache Spark)
> Add validation functionality to individual Param
> ------------------------------------------------
>
> Key: SPARK-7176
> URL: https://issues.apache.org/jira/browse/SPARK-7176
> Project: Spark
> Issue Type: Sub-task
> Components: ML
> Reporter: Joseph K. Bradley
> Assignee: Joseph K. Bradley
>
> This issue was brought up by
> [https://issues.apache.org/jira/browse/SPARK-7147]: There are multiple
> locations in which a parameter can be specified (in setters and in calling
> fit/transform), and we should check the parameter value in each one. It
> would be nice to avoid duplicating the checking code.
> Proposed change:
> * Add field to class Param: {{val isValid: T => Boolean}}, with default value
> of always returning true
> * Add helper methods in new ParamCheck object for constructing common
> validation checks (especially to help Java users)
> * Ensure that this validation is always done, most likely by always settings
> parameters by constructing a ParamPair + validating inside the ParamPair
> constructor
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