Github user mengxr commented on a diff in the pull request: https://github.com/apache/spark/pull/460#discussion_r11985263 --- Diff: mllib/src/main/scala/org/apache/spark/mllib/recommendation/ALS.scala --- @@ -627,6 +684,37 @@ object ALS { * @param blocks level of parallelism to split computation into * @param alpha confidence parameter (only applies when immplicitPrefs = true) * @param seed random seed + * @param nonnegative Whether to impose nonnegativity upon the user and product factors + */ + def trainImplicit( + ratings: RDD[Rating], + rank: Int, + iterations: Int, + lambda: Double, + blocks: Int, + alpha: Double, + seed: Long, + nonnegative: Boolean --- End diff -- Ditto.
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