modAL 0.4.0

Release notes

modAL 0.4.0 is finally here! This new release is made possible by the contributions of @BoyanH, @damienlancry, and @OskarLiew, many thanks to them!

New features

• pandas.DataFrame support, thanks to @BoyanH! This was a frequently requested feature which I was unable to properly implement, but @BoyanH has found a solution for this in #105.
• Support for scikit-learn pipelines, also by @BoyanH. Now learners support querying on the transformed data by setting on_transformed=True upon initialization.

Changes

• Query strategies should no longer return the selected instances, only the indices for the queried objects. (See #104 by @BoyanH.)

Fixes

• Committee sets classes when fitting, this solves the error which occurred when no training data was provided during initialization. This fix was contributed in #100 by @OskarLiew, thanks for that!
• Some typos in the ranked batch mode sampling example, fixed by @damienlancry.