[jira] [Created] (SPARK-8418) Add single- and multi-value support to ML Transformers

["Joseph K. Bradley (JIRA)" <ji...@apache.org>]

Joseph K. Bradley created SPARK-8418:
----------------------------------------

             Summary: Add single- and multi-value support to ML Transformers
                 Key: SPARK-8418
                 URL: https://issues.apache.org/jira/browse/SPARK-8418
             Project: Spark
          Issue Type: Sub-task
          Components: ML
            Reporter: Joseph K. Bradley


It would be convenient if all feature transformers supported transforming columns of single values and multiple values, specifically:
* one column with one value (e.g., type {{Double}})
* one column with multiple values (e.g., {{Array[Double]}} or {{Vector}})

We could go as far as supporting multiple columns, but that may not be necessary since VectorAssembler could be used to handle that.

Estimators under {{ml.feature}} should also support this.

This will likely require a short design doc to describe:
* how input and output columns will be specified
* schema validation
* code sharing to reduce duplication




--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org