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OSCL-LXR

 
 

    


0001 #
0002 # Licensed to the Apache Software Foundation (ASF) under one or more
0003 # contributor license agreements.  See the NOTICE file distributed with
0004 # this work for additional information regarding copyright ownership.
0005 # The ASF licenses this file to You under the Apache License, Version 2.0
0006 # (the "License"); you may not use this file except in compliance with
0007 # the License.  You may obtain a copy of the License at
0008 #
0009 #    http://www.apache.org/licenses/LICENSE-2.0
0010 #
0011 # Unless required by applicable law or agreed to in writing, software
0012 # distributed under the License is distributed on an "AS IS" BASIS,
0013 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014 # See the License for the specific language governing permissions and
0015 # limitations under the License.
0016 #
0017 
0018 from __future__ import print_function
0019 
0020 # $example on$
0021 from pyspark.ml.feature import RFormula
0022 # $example off$
0023 from pyspark.sql import SparkSession
0024 
0025 if __name__ == "__main__":
0026     spark = SparkSession\
0027         .builder\
0028         .appName("RFormulaExample")\
0029         .getOrCreate()
0030 
0031     # $example on$
0032     dataset = spark.createDataFrame(
0033         [(7, "US", 18, 1.0),
0034          (8, "CA", 12, 0.0),
0035          (9, "NZ", 15, 0.0)],
0036         ["id", "country", "hour", "clicked"])
0037 
0038     formula = RFormula(
0039         formula="clicked ~ country + hour",
0040         featuresCol="features",
0041         labelCol="label")
0042 
0043     output = formula.fit(dataset).transform(dataset)
0044     output.select("features", "label").show()
0045     # $example off$
0046 
0047     spark.stop()