Skip to content
Snippets Groups Projects
Commit 9bfb35da authored by Zheng RuiFeng's avatar Zheng RuiFeng Committed by Joseph K. Bradley
Browse files

[SPARK-14515][DOC] Add python example for ChiSqSelector

## What changes were proposed in this pull request?
Add the missing python example for ChiSqSelector

## How was this patch tested?
manual tests

Author: Zheng RuiFeng <ruifengz@foxmail.com>

Closes #12283 from zhengruifeng/chi2_pe.
parent 60273408
No related branches found
No related tags found
No related merge requests found
......@@ -1303,4 +1303,12 @@ for more details on the API.
{% include_example java/org/apache/spark/examples/ml/JavaChiSqSelectorExample.java %}
</div>
<div data-lang="python" markdown="1">
Refer to the [ChiSqSelector Python docs](api/python/pyspark.ml.html#pyspark.ml.feature.ChiSqSelector)
for more details on the API.
{% include_example python/ml/chisq_selector_example.py %}
</div>
</div>
#
# 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 import SparkContext
from pyspark.sql import SQLContext
# $example on$
from pyspark.ml.feature import ChiSqSelector
from pyspark.mllib.linalg import Vectors
# $example off$
if __name__ == "__main__":
sc = SparkContext(appName="ChiSqSelectorExample")
sqlContext = SQLContext(sc)
# $example on$
df = sqlContext.createDataFrame([
(7, Vectors.dense([0.0, 0.0, 18.0, 1.0]), 1.0,),
(8, Vectors.dense([0.0, 1.0, 12.0, 0.0]), 0.0,),
(9, Vectors.dense([1.0, 0.0, 15.0, 0.1]), 0.0,)], ["id", "features", "clicked"])
selector = ChiSqSelector(numTopFeatures=1, featuresCol="features",
outputCol="selectedFeatures", labelCol="clicked")
result = selector.fit(df).transform(df)
result.show()
# $example off$
sc.stop()
0% Loading or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment