From d18276cb1d82790a402960835e112aebd0c55513 Mon Sep 17 00:00:00 2001
From: Zheng RuiFeng <ruifengz@foxmail.com>
Date: Fri, 11 Mar 2016 09:21:12 +0200
Subject: [SPARK-13672][ML] Add python examples of BisectingKMeans in ML and
 MLLIB

JIRA: https://issues.apache.org/jira/browse/SPARK-13672

## What changes were proposed in this pull request?

add two python examples of BisectingKMeans for ml and mllib

## How was this patch tested?

manual tests

Author: Zheng RuiFeng <ruifengz@foxmail.com>

Closes #11515 from zhengruifeng/mllib_bkm_pe.
---
 .../main/python/mllib/bisecting_k_means_example.py | 50 ++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 examples/src/main/python/mllib/bisecting_k_means_example.py

(limited to 'examples/src/main/python/mllib')

diff --git a/examples/src/main/python/mllib/bisecting_k_means_example.py b/examples/src/main/python/mllib/bisecting_k_means_example.py
new file mode 100644
index 0000000000..7f4d0402d6
--- /dev/null
+++ b/examples/src/main/python/mllib/bisecting_k_means_example.py
@@ -0,0 +1,50 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from __future__ import print_function
+
+# $example on$
+from numpy import array
+# $example off$
+
+from pyspark import SparkContext
+# $example on$
+from pyspark.mllib.clustering import BisectingKMeans, BisectingKMeansModel
+# $example off$
+
+if __name__ == "__main__":
+    sc = SparkContext(appName="PythonBisectingKMeansExample")  # SparkContext
+
+    # $example on$
+    # Load and parse the data
+    data = sc.textFile("data/mllib/kmeans_data.txt")
+    parsedData = data.map(lambda line: array([float(x) for x in line.split(' ')]))
+
+    # Build the model (cluster the data)
+    model = BisectingKMeans.train(parsedData, 2, maxIterations=5)
+
+    # Evaluate clustering
+    cost = model.computeCost(parsedData)
+    print("Bisecting K-means Cost = " + str(cost))
+
+    # Save and load model
+    path = "target/org/apache/spark/PythonBisectingKMeansExample/BisectingKMeansModel"
+    model.save(sc, path)
+    sameModel = BisectingKMeansModel.load(sc, path)
+    # $example off$
+
+    sc.stop()
-- 
cgit v1.2.3