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author | Yuhao Yang <yuhao.yang@intel.com> | 2017-04-03 11:42:33 +0200 |
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committer | Nick Pentreath <nickp@za.ibm.com> | 2017-04-03 11:42:33 +0200 |
commit | 4d28e8430d11323f08657ca8f3251ca787c45501 (patch) | |
tree | 6bc6a719c21f2a6c973419bfbf7776284df3a523 /examples/src/main/python/ml/imputer_example.py | |
parent | fb5869f2cf94217b3e254e2d0820507dc83a25cc (diff) | |
download | spark-4d28e8430d11323f08657ca8f3251ca787c45501.tar.gz spark-4d28e8430d11323f08657ca8f3251ca787c45501.tar.bz2 spark-4d28e8430d11323f08657ca8f3251ca787c45501.zip |
[SPARK-19969][ML] Imputer doc and example
## What changes were proposed in this pull request?
Add docs and examples for spark.ml.feature.Imputer. Currently scala and Java examples are included. Python example will be added after https://github.com/apache/spark/pull/17316
## How was this patch tested?
local doc generation and example execution
Author: Yuhao Yang <yuhao.yang@intel.com>
Closes #17324 from hhbyyh/imputerdoc.
Diffstat (limited to 'examples/src/main/python/ml/imputer_example.py')
-rw-r--r-- | examples/src/main/python/ml/imputer_example.py | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/examples/src/main/python/ml/imputer_example.py b/examples/src/main/python/ml/imputer_example.py new file mode 100644 index 0000000000..b8437f827e --- /dev/null +++ b/examples/src/main/python/ml/imputer_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. +# + +# $example on$ +from pyspark.ml.feature import Imputer +# $example off$ +from pyspark.sql import SparkSession + +""" +An example demonstrating Imputer. +Run with: + bin/spark-submit examples/src/main/python/ml/imputer_example.py +""" + +if __name__ == "__main__": + spark = SparkSession\ + .builder\ + .appName("ImputerExample")\ + .getOrCreate() + + # $example on$ + df = spark.createDataFrame([ + (1.0, float("nan")), + (2.0, float("nan")), + (float("nan"), 3.0), + (4.0, 4.0), + (5.0, 5.0) + ], ["a", "b"]) + + imputer = Imputer(inputCols=["a", "b"], outputCols=["out_a", "out_b"]) + model = imputer.fit(df) + + model.transform(df).show() + # $example off$ + + spark.stop() |