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Posted to issues@spark.apache.org by "zhengruifeng (Jira)" <ji...@apache.org> on 2019/10/23 08:34:00 UTC
[jira] [Created] (SPARK-29565) OneHotEncoder should support
single-column input/ouput
zhengruifeng created SPARK-29565:
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Summary: OneHotEncoder should support single-column input/ouput
Key: SPARK-29565
URL: https://issues.apache.org/jira/browse/SPARK-29565
Project: Spark
Issue Type: New Feature
Components: ML, PySpark
Affects Versions: 3.0.0
Reporter: zhengruifeng
Current feature algs ({color:#5a6e5a}QuantileDiscretizer/Binarizer/Bucketizer/StringIndexer{color}) are designed to support both single-col & multi-col.
And there is already some internal utils (like {color:#c7a65d}checkSingleVsMultiColumnParams{color}) for this.
For OneHotEncoder, it's reasonable to support single-col.
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