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Posted to dev@flink.apache.org by "Till Rohrmann (JIRA)" <ji...@apache.org> on 2015/03/18 09:55:38 UTC

[jira] [Created] (FLINK-1717) Add support to read libSVM and SVMLight input files

Till Rohrmann created FLINK-1717:
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             Summary: Add support to read libSVM and SVMLight input files
                 Key: FLINK-1717
                 URL: https://issues.apache.org/jira/browse/FLINK-1717
             Project: Flink
          Issue Type: Improvement
            Reporter: Till Rohrmann


In order to train SVMs, the machine learning library should be able to read standard SVM input file formats. A widespread format is used by libSVM and SMVLight which has the following format:

<line> .=. <target> <feature>:<value> <feature>:<value> ... <feature>:<value> # <info>
<target> .=. +1 | -1 | 0 | <float> 
<feature> .=. <integer> | "qid"
<value> .=. <float>
<info> .=. <string>

Details can be found [here|http://svmlight.joachims.org/] and [here|http://www.csie.ntu.edu.tw/~cjlin/libsvm/faq.html#/Q03:_Data_preparation]



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