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https://issues.apache.org/jira/browse/SPARK-4038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16400839#comment-16400839
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Gustavo Orair commented on SPARK-4038:
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There is a paper that discuss multiple different strategies for distance based
outlier detection:
* [http://www2.cs.uh.edu/~ceick/7362/T1-9.pdf]
This paper propose an adaptive parallel algorithm that executes local search
for neighbors for a selected pool by ranking strategies before examining the
data for outliers that looks promising for distributed computation.
> Outlier Detection Algorithm for MLlib
> -------------------------------------
>
> Key: SPARK-4038
> URL: https://issues.apache.org/jira/browse/SPARK-4038
> Project: Spark
> Issue Type: New Feature
> Components: MLlib
> Reporter: Ashutosh Trivedi
> Priority: Minor
>
> The aim of this JIRA is to discuss about which parallel outlier detection
> algorithms can be included in MLlib.
> The one which I am familiar with is Attribute Value Frequency (AVF). It
> scales linearly with the number of data points and attributes, and relies on
> a single data scan. It is not distance based and well suited for categorical
> data. In original paper a parallel version is also given, which is not
> complected to implement. I am working on the implementation and soon submit
> the initial code for review.
> Here is the Link for the paper
> http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4410382
> As pointed out by Xiangrui in discussion
> http://apache-spark-developers-list.1001551.n3.nabble.com/MLlib-Contributing-Algorithm-for-Outlier-Detection-td8880.html
> There are other algorithms also. Lets discuss about which will be more
> general and easily paralleled.
>
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