[SPARK-22331] Make MLlib string params case-insensitive

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Incomplete
• Affects Version/s: 2.2.0
• Component/s: MLlib
• Labels: bulk-closed
• Assignee: Unassigned
• Reporter: yuhao yang
• Created: 23/Oct/17 05:37
• Updated: 21/May/19 04:12
• Resolved: 21/May/19 04:12

Description

Some String params in ML are still case-sensitive, as they are checked by ParamValidators.inArray.

For consistency in user experience, there should be some general guideline in whether String params in Spark MLlib are case-insensitive or not.

I'm leaning towards making all String params case-insensitive where possible.

Issue Links

• relates to: SPARK-22381 Add StringParam that supports valid options