Collection of Ordinal Regression algorithms in Python, following a scikit-learn compatible API.
Docs: https://pythonhosted.org/mord/
Github repo: http://github.com/fabianp/mord
Pedregosa, Fabian, Francis Bach, and Alexandre Gramfort. "On the consistency of ordinal regression methods." The Journal of Machine Learning Research 18.1 (2017) JMLR.