Bulk Operation

SPARK-5874 Warm-start support for ML estimator

SPARK-5874 Should ML Models contains single models or Pipelines?

SPARK-5874 Add optional caching to Pipelines

SPARK-5874 Add single- and multi-value support to ML Transformers

SPARK-5874 Remove spark.ml Model, and have all Transformers have parent

SPARK-5874 DSL for Pipeline assembly

SPARK-5874 Python: Transformer/Estimator should be copyable

SPARK-5874 Python: Add validation functionality to individual Param

SPARK-5874 Add validation functionality to individual Param

SPARK-5874 Enforce Params.validate by making it abstract

SPARK-5874 Better handling of pipeline parameters in PySpark

SPARK-5874 Move shared params to param.shared and use code gen

SPARK-5874 Better handling of default parameter values.

SPARK-5874 Transformer/Estimator should be copyable.

SPARK-5874 Should Evaluator be a PipelineStage