ratschillerp opened a new pull request #1497:
URL: https://github.com/apache/systemds/pull/1497


   [SYSTEMDS-3150] Outlier Detection via DBSCAN
   
   This feature implements the outlier detection/prediction using a DBScan 
model.
   
   The existing dbscan builtin is extended by returning a model which contains 
only the cluster members as the points coordinates.
   The builtin function is called outlierByDB and takes an Xtest matrix, a 
model which is returned from the existing dbscan builtin and eps as parameters.
   It is used to find outliers from newly generated data inside an existing 
cluster model.
   Points are considered outliers if they are not within the eps distance of at 
least one member in a cluster.


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