Github user feynmanliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/6997#discussion_r33394169
--- Diff:
mllib/src/test/scala/org/apache/spark/mllib/fpm/FPGrowthSuite.scala ---
@@ -61,17 +63,49 @@ class FPGrowthSuite extends SparkFunSuite with
MLlibTestSparkContext {
val model2 = fpg
.setMinSupport(0.3)
.setNumPartitions(4)
+ .setOrdered(false)
.run(rdd)
assert(model2.freqItemsets.count() === 54)
val model1 = fpg
.setMinSupport(0.1)
.setNumPartitions(8)
+ .setOrdered(false)
.run(rdd)
assert(model1.freqItemsets.count() === 625)
}
- test("FP-Growth using Int type") {
+ test("FP-Growth frequent sequences using String type"){
+ val transactions = Seq(
+ "r z h k p",
+ "z y x w v u t s",
+ "s x o n r",
+ "x z y m t s q e",
+ "z",
+ "x z y r q t p")
+ .map(_.split(" "))
+ val rdd = sc.parallelize(transactions, 2).cache()
+
+ val fpg = new FPGrowth()
+
+ val model1 = fpg
+ .setMinSupport(0.5)
+ .setNumPartitions(2)
+ .setOrdered(true)
+ .run(rdd)
+
+ val expected = Set(
--- End diff --
OK.
The file at `path` has a specific format for encoding transactions; should
I include that in comment as well or can I assume the user will be able to
figure it out (it is the same format as the `zaki.txt` example file provided
with R's `arulesSequences` package).
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