[jira] [Created] (SPARK-17789) Don't force users to set k for KMeans if initial model is set

["Seth Hendrickson (JIRA)" <ji...@apache.org>]

Seth Hendrickson created SPARK-17789:
----------------------------------------

             Summary: Don't force users to set k for KMeans if initial model is set
                 Key: SPARK-17789
                 URL: https://issues.apache.org/jira/browse/SPARK-17789
             Project: Spark
          Issue Type: Improvement
          Components: ML
            Reporter: Seth Hendrickson
            Priority: Minor


In the initial implementation of initalModel, we allow users to set the initial model with a KMeansModel that has a different {{k}} than the current model. We throw an error at train time if the two are mismatched. This means that the following code throws a runtime exception:

{{code}}
val kmeansModel = new KMeans().setInitialModel(model).fit(df)
{{code}}

We should discuss this behavior, and decide if we should enforce users to set both the initial model and k, or if we should alter k when the initial model is set, or if we should keep the current behavior.



--
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