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  "Description": "Regularised discriminant analysis functions. The classical\nregularised discriminant analysis proposed by Friedman in 1989,\nincluding cross-validation, of which the linear and quadratic\ndiscriminant analyses are special cases. Further, the\nregularised maximum likelihood linear discriminant analysis,\nincluding cross-validation. References: Friedman J.H. (1989):\n\"Regularized Discriminant Analysis\". Journal of the American\nStatistical Association 84(405): 165--175.\n<doi:10.2307/2289860>. Friedman J., Hastie T. and Tibshirani R.\n(2009). \"The elements of statistical learning\", 2nd edition.\nSpringer, Berlin. <doi:10.1007/978-0-387-84858-7>. Tsagris M.,\nPreston S. and Wood A.T.A. (2016). \"Improved classification for\ncompositional data using the alpha-transformation\". Journal of\nClassification, 33(2): 243--261.\n<doi:10.1007/s00357-016-9207-5>.",
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