Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/5213#discussion_r27506124
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/api/python/PythonMLLibAPI.scala ---
@@ -407,6 +406,35 @@ private[python] class PythonMLLibAPI extends
Serializable {
}
/**
+ * A Wrapper of FPGrowthModel to provide helper method for Python
+ */
+ private[python] class FPGrowthModelWrapper(model: FPGrowthModel[Any])
+ extends FPGrowthModel(model.freqItemsets) {
+
+ def getFreqItemsets: RDD[Array[Any]] = {
+ SerDe.fromTuple2RDD(model.freqItemsets.map(x => (x.javaItems,
x.freq)))
+ }
+ }
+
+ /**
+ * Java stub for Python mllib FPGrowth.train(). This stub returns a
handle
+ * to the Java object instead of the content of the Java object. Extra
care
+ * needs to be taken in the Python code to ensure it gets freed on exit;
see
+ * the Py4J documentation.
+ */
+ def trainFPGrowthModel(
+ data: JavaRDD[java.lang.Iterable[Any]],
+ minSupport: Double,
+ numPartitions: Int): FPGrowthModel[Any] = {
+ val fpm = new FPGrowth()
--- End diff --
`fpm` -> `fpg`
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