aboutsummaryrefslogtreecommitdiff
path: root/examples/src/main/python/ml/generalized_linear_regression_example.py
diff options
context:
space:
mode:
Diffstat (limited to 'examples/src/main/python/ml/generalized_linear_regression_example.py')
-rw-r--r--examples/src/main/python/ml/generalized_linear_regression_example.py66
1 files changed, 66 insertions, 0 deletions
diff --git a/examples/src/main/python/ml/generalized_linear_regression_example.py b/examples/src/main/python/ml/generalized_linear_regression_example.py
new file mode 100644
index 0000000000..796752a60f
--- /dev/null
+++ b/examples/src/main/python/ml/generalized_linear_regression_example.py
@@ -0,0 +1,66 @@
+#
+# 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
+
+from pyspark.sql import SparkSession
+# $example on$
+from pyspark.ml.regression import GeneralizedLinearRegression
+# $example off$
+
+"""
+An example demonstrating generalized linear regression.
+Run with:
+ bin/spark-submit examples/src/main/python/ml/generalized_linear_regression_example.py
+"""
+
+if __name__ == "__main__":
+ spark = SparkSession\
+ .builder\
+ .appName("GeneralizedLinearRegressionExample")\
+ .getOrCreate()
+
+ # $example on$
+ # Load training data
+ dataset = spark.read.format("libsvm")\
+ .load("data/mllib/sample_linear_regression_data.txt")
+
+ glr = GeneralizedLinearRegression(family="gaussian", link="identity", maxIter=10, regParam=0.3)
+
+ # Fit the model
+ model = glr.fit(dataset)
+
+ # Print the coefficients and intercept for generalized linear regression model
+ print("Coefficients: " + str(model.coefficients))
+ print("Intercept: " + str(model.intercept))
+
+ # Summarize the model over the training set and print out some metrics
+ summary = model.summary
+ print("Coefficient Standard Errors: " + str(summary.coefficientStandardErrors))
+ print("T Values: " + str(summary.tValues))
+ print("P Values: " + str(summary.pValues))
+ print("Dispersion: " + str(summary.dispersion))
+ print("Null Deviance: " + str(summary.nullDeviance))
+ print("Residual Degree Of Freedom Null: " + str(summary.residualDegreeOfFreedomNull))
+ print("Deviance: " + str(summary.deviance))
+ print("Residual Degree Of Freedom: " + str(summary.residualDegreeOfFreedom))
+ print("AIC: " + str(summary.aic))
+ print("Deviance Residuals: ")
+ summary.residuals().show()
+ # $example off$
+
+ spark.stop()