Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/13381#discussion_r66828101
--- Diff: examples/src/main/python/mllib/isotonic_regression_example.py ---
@@ -23,18 +23,22 @@
from pyspark import SparkContext
# $example on$
import math
-from pyspark.mllib.regression import IsotonicRegression,
IsotonicRegressionModel
+from pyspark.mllib.regression import LabeledPoint, IsotonicRegression,
IsotonicRegressionModel
# $example off$
if __name__ == "__main__":
sc = SparkContext(appName="PythonIsotonicRegressionExample")
# $example on$
- data = sc.textFile("data/mllib/sample_isotonic_regression_data.txt")
+ # Load and parse the data
+ def parsePoint(line):
+ values = [float(x) for x in line.replace(',', ' ').replace(':', '
').split(' ')]
+ return (values[0], values[2], 1.0)
+ data =
sc.textFile("data/mllib/sample_isotonic_regression_libsvm_data.txt")
--- End diff --
Since we use the dataset with libsvm format, we should use
```MLUtils.loadLibSVMFile``` to load that.
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