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Predicting MMSE scores from joined Cookie + Sentence datasets from Pitt corpus - Becker, J. T., Boller, F., Lopez, O. L., Saxton, J., & McGonigle, K. L. (1994). The natural history of Alzheimer's disease: description of study cohort and accuracy of diagnosis. Archives of Neurology, 51(6), 585-594. Ordinal regression setup - Jianlin Cheng: “A neural network approach to ordinal regression”, 2007; arXiv:0704.1028.