GitHub user WeichenXu123 opened a pull request: https://github.com/apache/spark/pull/20810
[SPARK-20114][ML] spark.ml parity for sequential pattern mining - PrefixSpan ## What changes were proposed in this pull request? PrefixSpan API for spark.ml. Note: Currently there's no sequential rule mining support in `mllib.PrefixSpan` so we cannot implement `PrefixSpanModel.transform`. In this PR, the transform do nothing. Or we can throw out unsupport-operation exception. I am open to both of them. ## How was this patch tested? Testsuite added. You can merge this pull request into a Git repository by running: $ git pull https://github.com/WeichenXu123/spark prefix_span Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/20810.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #20810 ---- commit 6751e70a0e38f203009caa4a7f1899fa203041fe Author: WeichenXu <weichen.xu@...> Date: 2018-03-13T13:07:36Z init pr commit c1c5338c5698bb4fa87151fd8ba5cc986e1e1466 Author: WeichenXu <weichen.xu@...> Date: 2018-03-13T13:19:57Z fix style ---- --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org