fix typo
more doc for pipeline
update pipeline
org imports in text pipeline
more doc for Transformer
compure score once
remove leftover code in Transformer
rename copyValues to inheritValues and make it do the right thing
refactor schema transform in lr
rename default to defaultValue
do not persist before calling binary classification metrics
typo
update extends indentation
remove ;this from setters
update package doc
add AlphaComponent annotation
add scala ml package object
doc updates