aboutsummaryrefslogtreecommitdiff
path: root/examples/src/main/python/ml/isotonic_regression_example.py
diff options
context:
space:
mode:
Diffstat (limited to 'examples/src/main/python/ml/isotonic_regression_example.py')
-rw-r--r--examples/src/main/python/ml/isotonic_regression_example.py54
1 files changed, 54 insertions, 0 deletions
diff --git a/examples/src/main/python/ml/isotonic_regression_example.py b/examples/src/main/python/ml/isotonic_regression_example.py
new file mode 100644
index 0000000000..1e61bd8eff
--- /dev/null
+++ b/examples/src/main/python/ml/isotonic_regression_example.py
@@ -0,0 +1,54 @@
+#
+# 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.
+#
+
+"""
+Isotonic Regression Example.
+"""
+from __future__ import print_function
+
+# $example on$
+from pyspark.ml.regression import IsotonicRegression, IsotonicRegressionModel
+# $example off$
+from pyspark.sql import SparkSession
+
+"""
+An example demonstrating isotonic regression.
+Run with:
+ bin/spark-submit examples/src/main/python/ml/isotonic_regression_example.py
+"""
+if __name__ == "__main__":
+
+ spark = SparkSession\
+ .builder\
+ .appName("PythonIsotonicRegressionExample")\
+ .getOrCreate()
+
+ # $example on$
+ # Loads data.
+ dataset = spark.read.format("libsvm")\
+ .load("data/mllib/sample_isotonic_regression_libsvm_data.txt")
+
+ # Trains an isotonic regression model.
+ model = IsotonicRegression().fit(dataset)
+ print("Boundaries in increasing order: " + str(model.boundaries))
+ print("Predictions associated with the boundaries: " + str(model.predictions))
+
+ # Makes predictions.
+ model.transform(dataset).show()
+ # $example off$
+
+ spark.stop()