Feng, M., Heffernan, N. T., & Beck, J. (2009). Using learning decomposition to analyze instructional effectiveness in the ASSISTment system. In Dimitrova, Mizoguchi, du Boulay, and Grasser (Eds), Proceedings of the 14th International Conference on Artificial Intelligence in Education (AIED-2009), pp. 523-530. Amsterdam, Netherlands: IOS Press.
