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https://issues.apache.org/jira/browse/SPARK-10133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14704521#comment-14704521
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Xusen Yin commented on SPARK-10133:
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Thanks. I ignored the above line.
> loadLibSVMFile fails to detect zero-based lines
> -----------------------------------------------
>
> Key: SPARK-10133
> URL: https://issues.apache.org/jira/browse/SPARK-10133
> Project: Spark
> Issue Type: Bug
> Components: MLlib
> Affects Versions: 1.4.1
> Reporter: Xusen Yin
> Priority: Minor
>
> https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/mllib/util/MLUtils.scala#L88
> The code wants to assure that each line of vector is one-based and in
> ascending order, but it fails since the previous = -1 in the beginning.
> In this condition, a libSVM format file that begins with 0-based index could
> read in normally, but the size of the according SparseVector is wrong, i.e.
> numFeatures - 1.
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