Github user dbtsai commented on a diff in the pull request:
https://github.com/apache/spark/pull/11119#discussion_r79936136
--- Diff: mllib/src/main/scala/org/apache/spark/ml/clustering/KMeans.scala
---
@@ -81,11 +81,23 @@ private[clustering] trait KMeansParams extends Params
with HasMaxIter with HasFe
def getInitSteps: Int = $(initSteps)
/**
+ * Param for KMeansModel to use for warm start.
+ * @group param
+ */
+ final val initialModel: Param[KMeansModel] =
+ new Param[KMeansModel](this, "initialModel", "A KMeansModel for warm
start.")
+
+ /**
* Validates and transforms the input schema.
* @param schema input schema
* @return output schema
*/
protected def validateAndTransformSchema(schema: StructType): StructType
= {
+ if (isDefined(initialModel)) {
+ val kOfInitialModel =
$(initialModel).parentModel.clusterCenters.length
+ require(kOfInitialModel == $(k),
+ s"mismatched cluster count, ${$(k)} cluster centers required but
$kOfInitialModel found.")
+ }
--- End diff --
Why do you need to check this? This should already be checked in training.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
