[GitHub] spark pull request #21524: [SPARK-24212][ML][doc] Add the example and user g...

[tengpeng]

GitHub user tengpeng opened a pull request:

    https://github.com/apache/spark/pull/21524

    [SPARK-24212][ML][doc] Add the example and user guide for ML PrefixSpan

    ## What changes were proposed in this pull request?
    
    There are no example and user guide for ML PrefixSpan (not MLlib 
PrefixSpan).
    
    This PR adds an example and a user guide.
    
    ## How was this patch tested?
    
    Generated the local web page. See the screenshot.
    
    <img width="812" alt="screenshot 2018-06-10 18 27 39" 
src="https://user-images.githubusercontent.com/2724786/41207516-3d5c137e-6cdd-11e8-8e8f-f713231cc4fd.png";>


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/tengpeng/spark Spark-24212

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/21524.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #21524
    
----
commit 333f97e48ffab3354bf2627959c40ac7a394a979
Author: Teng Peng <josephtengpeng@...>
Date:   2018-06-10T23:31:56Z

    Add the example and user guide for ML PrefixSpan

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