[GitHub] [madlib] fmcquillan99 commented on issue #441: Kmeans: simplified silhouette per point for k-means

[GitBox <gi...@apache.org>]

fmcquillan99 commented on issue #441: Kmeans: simplified silhouette per point for k-means
URL: https://github.com/apache/madlib/pull/441#issuecomment-531937741
 
 
   Expected output:
   ```
   
   pid | INTEGER. Point ID.
   -- | --
   INTEGER. The cluster that the point is assigned to assignment.
   DOUBLE PRECISION. Simplified silhouette score for the point.
   ```
   
   what I got was
   ```
    pid | centroids |       silh        
   -----+-----------+-------------------
      1 | {0,1}     | 0.966608819821713
      2 | {0,1}     | 0.926251125077039
      3 | {0,1}     |  0.28073008848306
      4 | {1,0}     | 0.951447083910869
      5 | {0,1}     |  0.80098239014753
      6 | {1,0}     | 0.972487557020722
      7 | {1,0}     |  0.88838568723116
      8 | {1,0}     | 0.906334719972002
      9 | {0,1}     | 0.994315140692314
     10 | {0,1}     |  0.99420347703982
   (10 rows)
   ```
   so for `centroids` column need to return a single int
   

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