Narine Kokhlikyan created SPARK-13295: -----------------------------------------
Summary: ML/MLLIB: AFTSurvivalRegression: Improve AFTAggregator - Avoid creating new instances of arrays/vectors for each record Key: SPARK-13295 URL: https://issues.apache.org/jira/browse/SPARK-13295 Project: Spark Issue Type: Improvement Components: ML, MLlib Reporter: Narine Kokhlikyan As also mentioned/marked by TODO in AFTAggregator.AFTAggregator.add(data: AFTPoint) a new array is being created for intercept value and it is being concatenated with another array with contains the betas, the resulted Array is being converted into a Dense vector which in it's turn is being converted into breeze vector. This is expensive and not necessarily beautiful. -- 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