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[SPARK-19825][R][ML] spark.ml R API for FPGrowth #17170

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[SPARK-19825][R][ML] spark.ml R API for FPGrowth #17170

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6522916
Add R API for FPGrowth
zero323 Mar 6, 2017
254e8a4
Stop if numPartitions is not null and not strictly positive
zero323 Mar 27, 2017
8f0e578
Add test for training without numPartitions
zero323 Mar 27, 2017
797d68d
Add column description for freqItemsets and associationRules
zero323 Mar 28, 2017
64c07aa
Correct names DataFrame -> SparkDataFrame
zero323 Mar 29, 2017
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Stop if numPartitions is not null and not strictly positive
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@zero323
zero323 committed Mar 27, 2017
commit 254e8a41fdeaff12d46f84be438caf3220827f69
5 changes: 4 additions & 1 deletion R/pkg/R/mllib_fpm.R
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Expand Up @@ -85,8 +85,11 @@ setMethod("spark.fpGrowth", signature(data = "SparkDataFrame"),
if (!is.numeric(minConfidence) || minConfidence < 0 || minConfidence > 1) {
stop("minConfidence should be a number [0, 1].")
}
if (!is.null(numPartitions)) {
numPartitions <- as.integer(numPartitions)
stopifnot(numPartitions > 0)
}

numPartitions <- if (is.null(numPartitions)) NULL else as.integer(numPartitions)
jobj <- callJStatic("org.apache.spark.ml.r.FPGrowthWrapper", "fit",
data@sdf, as.numeric(minSupport), as.numeric(minConfidence),
itemsCol, numPartitions)
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