Seth Hendrickson created SPARK-21406: ----------------------------------------
Summary: Add logLikelihood to GLR families Key: SPARK-21406 URL: https://issues.apache.org/jira/browse/SPARK-21406 Project: Spark Issue Type: Sub-task Components: ML Affects Versions: 2.3.0 Reporter: Seth Hendrickson Priority: Minor To be able to implement the typical gradient based aggregator for GLR, we'd need to add a {{logLikelihood(y: Double, mu: Double, weight: Double)}} method to GLR {{Family}} class. One possible hiccup - Tweedie family log likelihood is not computationally feasible [link| http://support.sas.com/documentation/cdl/en/stathpug/67524/HTML/default/viewer.htm#stathpug_hpgenselect_details16.htm]. H2O gets around this by using the deviance instead. We could leave it unimplemented initially. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org