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authorsomideshmukh <somilde@us.ibm.com>2015-12-07 23:26:34 -0800
committerXiangrui Meng <meng@databricks.com>2015-12-07 23:26:34 -0800
commit78209b0ccaf3f22b5e2345dfb2b98edfdb746819 (patch)
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parent3e7e05f5ee763925ed60410d7de04cf36b723de1 (diff)
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[SPARK-11551][DOC][EXAMPLE] Replace example code in ml-features.md using include_example
Made new patch contaning only markdown examples moved to exmaple/folder. Ony three java code were not shfted since they were contaning compliation error ,these classes are 1)StandardScale 2)NormalizerExample 3)VectorIndexer Author: Xusen Yin <yinxusen@gmail.com> Author: somideshmukh <somilde@us.ibm.com> Closes #10002 from somideshmukh/SomilBranch1.33.
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+#
+# 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 Tokenizer, RegexTokenizer
+# $example off$
+
+if __name__ == "__main__":
+ sc = SparkContext(appName="TokenizerExample")
+ sqlContext = SQLContext(sc)
+
+ # $example on$
+ sentenceDataFrame = sqlContext.createDataFrame([
+ (0, "Hi I heard about Spark"),
+ (1, "I wish Java could use case classes"),
+ (2, "Logistic,regression,models,are,neat")
+ ], ["label", "sentence"])
+ tokenizer = Tokenizer(inputCol="sentence", outputCol="words")
+ wordsDataFrame = tokenizer.transform(sentenceDataFrame)
+ for words_label in wordsDataFrame.select("words", "label").take(3):
+ print(words_label)
+ regexTokenizer = RegexTokenizer(inputCol="sentence", outputCol="words", pattern="\\W")
+ # alternatively, pattern="\\w+", gaps(False)
+ # $example off$
+
+ sc.stop()