Github user zhengruifeng commented on a diff in the pull request:
https://github.com/apache/spark/pull/23122#discussion_r236537309
--- Diff: mllib/src/main/scala/org/apache/spark/ml/recommendation/ALS.scala
---
@@ -671,7 +671,7 @@ class ALS(@Since("1.4.0") override val uid: String)
extends Estimator[ALSModel]
instr.logDataset(dataset)
instr.logParams(this, rank, numUserBlocks, numItemBlocks,
implicitPrefs, alpha, userCol,
itemCol, ratingCol, predictionCol, maxIter, regParam, nonnegative,
checkpointInterval,
- seed, intermediateStorageLevel, finalStorageLevel)
+ seed, intermediateStorageLevel, finalStorageLevel, coldStartStrategy)
--- End diff --
Yes, we could let coldStartStrategy alone. BTW, I made a rapid scan and
found that some algs do not log the columns.
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