This is an implementation of decision forests as described in Criminisi & al. [1] as a part of a course I'm taking in random forests. You can probably see decision forests as a generalization of Breiman's random forests [2].
[1] Criminisi, A., Shotton, J., & Konukoglu, E. (2011). Decision forests: A unified framework for classification, regression, density estimation, manifold learning and semi-supervised learning. Foundations and Trends® in Computer Graphics and Vision, (7), 81-227.
[2] Breiman, L. (2001). Random forests. Machine learning, 45(1), 5-32.