Github user keypointt commented on a diff in the pull request:
https://github.com/apache/spark/pull/11116#discussion_r53554064
--- Diff:
examples/src/main/python/mllib/latent_dirichlet_allocation_example.py ---
@@ -0,0 +1,53 @@
+#
+# 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
+# $example on$
+from pyspark.mllib.clustering import LDA, LDAModel
+from pyspark.mllib.linalg import Vectors
+# $example off$
+
+if __name__ == "__main__":
+ sc = SparkContext(appName="LatentDirichletAllocationExample") #
SparkContext
+
+ # $example on$
+ # Load and parse the data
+ data = sc.textFile("data/mllib/sample_lda_data.txt")
+ parsedData = data.map(lambda line: Vectors.dense([float(x) for x in
line.strip().split(' ')]))
+ # Index documents with unique IDs
+ corpus = parsedData.zipWithIndex().map(lambda x: [x[1], x[0]]).cache()
+
+ # Cluster the documents into three topics using LDA
+ ldaModel = LDA.train(corpus, k=3)
+
+ # Output topics. Each is a distribution over words (matching word
count vectors)
+ print("Learned topics (as distributions over vocab of " +
str(ldaModel.vocabSize())
+ + " words):")
--- End diff --
got python check error "E128 continuation line under-indented for visual
indent" after running "./dev/lint-python", seems it should be indenting to the
opening bracket
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