Sergei Lebedev 66874f5777 [jvm-packages] Deduplicated train/test data access in tests (#2507)
* [jvm-packages] Deduplicated train/test data access in tests

All datasets are now available via a unified API, e.g. Agaricus.test.
The only exception is the dermatology data which requires parsing a
CSV file.

* Inlined Utils.buildTrainingRDD

The default number of partitions for local mode is equal to the number
of available CPUs.

* Replaced dataset names with problem types
2017-07-12 09:13:55 -07:00
..