Github user jkbradley commented on a diff in the pull request: https://github.com/apache/spark/pull/10150#discussion_r49251288 --- Diff: python/pyspark/mllib/clustering.py --- @@ -38,13 +38,120 @@ from pyspark.mllib.util import Saveable, Loader, inherit_doc, JavaLoader, JavaSaveable from pyspark.streaming import DStream -__all__ = ['KMeansModel', 'KMeans', 'GaussianMixtureModel', 'GaussianMixture', - 'PowerIterationClusteringModel', 'PowerIterationClustering', - 'StreamingKMeans', 'StreamingKMeansModel', +__all__ = ['BisectingKMeansModel', 'BisectingKMeans', 'KMeansModel', 'KMeans', + 'GaussianMixtureModel', 'GaussianMixture', 'PowerIterationClusteringModel', + 'PowerIterationClustering', 'StreamingKMeans', 'StreamingKMeansModel', 'LDA', 'LDAModel'] @inherit_doc +class BisectingKMeansModel(JavaModelWrapper): + """ + .. note:: Experimental + + A clustering model derived from the bisecting k-means method. + + >>> data = array([0.0,0.0, 1.0,1.0, 9.0,8.0, 8.0,9.0]).reshape(4, 2) + >>> bskm = BisectingKMeans() + >>> model = bskm.train(sc.parallelize(data), k=4) + >>> p = array([0.0, 0.0]) + >>> model.predict(p) == model.predict(p) --- End diff -- I'd write this as more of an example than a unit test. It's good to exercise all functionality, but unit test code should go in tests.py. (We have been inconsistent about this, but it'd be good to improve.)
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