[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-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
[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 ] Xiangrui Meng updated SPARK-2341: - Assignee: 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 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 (v6.2#6252)
[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 ] Xiangrui Meng updated SPARK-2341: - Target Version/s: 1.1.0 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 Priority: Minor Labels: easyfix 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 (v6.2#6252)
