[ https://issues.apache.org/jira/browse/SPARK-5099?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Liang-Chi Hsieh updated SPARK-5099: ----------------------------------- Summary: Simplify logistic loss function (was: Simplify logistic loss function and fix deviance loss function) > Simplify logistic loss function > ------------------------------- > > Key: SPARK-5099 > URL: https://issues.apache.org/jira/browse/SPARK-5099 > Project: Spark > Issue Type: Bug > Reporter: Liang-Chi Hsieh > Priority: Minor > > This is a minor pr where I think that we can simply take minus of margin, > instead of subtracting margin, in the LogisticGradient. > Mathematically, they are equal. But the modified equation is the common form > of logistic loss function and so more readable. It also computes more > accurate value as some quick tests show. > Besides, there is a bug in computing the loss in LogLoss. This pr fixes it > too. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org