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author | Zheng RuiFeng <ruifengz@foxmail.com> | 2016-03-11 09:21:12 +0200 |
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committer | Nick Pentreath <nick.pentreath@gmail.com> | 2016-03-11 09:21:12 +0200 |
commit | d18276cb1d82790a402960835e112aebd0c55513 (patch) | |
tree | ff81f8825b43733b53e7160d1d168171653e6191 /examples/src/main/python/mllib | |
parent | e33bc67c8f936b7e0e4b94741794e162c0f402d3 (diff) | |
download | spark-d18276cb1d82790a402960835e112aebd0c55513.tar.gz spark-d18276cb1d82790a402960835e112aebd0c55513.tar.bz2 spark-d18276cb1d82790a402960835e112aebd0c55513.zip |
[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.
Diffstat (limited to 'examples/src/main/python/mllib')
-rw-r--r-- | examples/src/main/python/mllib/bisecting_k_means_example.py | 50 |
1 files changed, 50 insertions, 0 deletions
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() |