forked from apache/spark
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[SPARK-3001][MLLIB] Improve Spearman's correlation
The current implementation requires sorting individual columns, which could be done with a global sort. result on a 32-node cluster: m | n | prev | this ---|---|-------|----- 1000000 | 50 | 55s | 9s 10000000 | 50 | 97s | 76s 1000000 | 100 | 119s | 15s Author: Xiangrui Meng <meng@databricks.com> Closes apache#1917 from mengxr/spearman and squashes the following commits: 4d5d262 [Xiangrui Meng] remove unused import 85c48de [Xiangrui Meng] minor updates a048d0c [Xiangrui Meng] remove cache and set a limit to cachedIds b98bb18 [Xiangrui Meng] add comments 0846e07 [Xiangrui Meng] first version
- Loading branch information
1 parent
48389d3
commit 4df7252
Showing
1 changed file
with
42 additions
and
78 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters