You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "Tony Stevenson (JIRA)" <ji...@apache.org> on 2015/01/15 10:09:40 UTC
[jira] [Updated] (SPARK-2341) loadLibSVMFile doesn't handle
regression datasets
[ https://issues.apache.org/jira/browse/SPARK-2341?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tony Stevenson updated SPARK-2341:
----------------------------------
Assignee: Sean Owen (was: Sean Owen)
> loadLibSVMFile doesn't handle regression datasets
> -------------------------------------------------
>
> Key: SPARK-2341
> URL: https://issues.apache.org/jira/browse/SPARK-2341
> Project: Spark
> Issue Type: Bug
> Components: MLlib
> Affects Versions: 1.0.0
> Reporter: Eustache
> Assignee: Sean Owen
> Priority: Minor
> Labels: easyfix
> Fix For: 1.1.0
>
>
> Many datasets exist in LibSVM format for regression tasks [1] but currently the loadLibSVMFile primitive doesn't handle regression datasets.
> More precisely, the LabelParser is either a MulticlassLabelParser or a BinaryLabelParser. What happens then is that the file is loaded but in multiclass mode : each target value is interpreted as a class name !
> The fix would be to write a RegressionLabelParser which converts target values to Double and plug it into the loadLibSVMFile routine.
> [1] http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/regression.html
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org