diff options
Diffstat (limited to 'examples/src')
| -rw-r--r-- | examples/src/main/scala/org/apache/spark/examples/ml/ALSExample.scala | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/examples/src/main/scala/org/apache/spark/examples/ml/ALSExample.scala b/examples/src/main/scala/org/apache/spark/examples/ml/ALSExample.scala index 6b151a622e..da19ea9f10 100644 --- a/examples/src/main/scala/org/apache/spark/examples/ml/ALSExample.scala +++ b/examples/src/main/scala/org/apache/spark/examples/ml/ALSExample.scala @@ -24,16 +24,21 @@ import org.apache.spark.ml.recommendation.ALS // $example off$ import org.apache.spark.sql.SparkSession +/** + * An example demonstrating ALS. + * Run with + * {{{ + * bin/run-example ml.ALSExample + * }}} + */ object ALSExample { // $example on$ case class Rating(userId: Int, movieId: Int, rating: Float, timestamp: Long) - object Rating { - def parseRating(str: String): Rating = { - val fields = str.split("::") - assert(fields.size == 4) - Rating(fields(0).toInt, fields(1).toInt, fields(2).toFloat, fields(3).toLong) - } + def parseRating(str: String): Rating = { + val fields = str.split("::") + assert(fields.size == 4) + Rating(fields(0).toInt, fields(1).toInt, fields(2).toFloat, fields(3).toLong) } // $example off$ @@ -46,7 +51,7 @@ object ALSExample { // $example on$ val ratings = spark.read.text("data/mllib/als/sample_movielens_ratings.txt") - .map(Rating.parseRating) + .map(parseRating) .toDF() val Array(training, test) = ratings.randomSplit(Array(0.8, 0.2)) |