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On coding effects in regularized categorical regression

Abstract : This discussion is a continuation of Tutz and Gertheiss (2016)’s paper, where we focus on the importance of the coding of effects in regularized categorical and ordinal regression. We show that, though that an appropriate regularization is profitable for any coding, the choice of a relevant coding can prevail over the one of the regularization term for revealing structures. We focus on predictors though the issues raised also apply to responses. We illustrate our point on a classic data set.
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https://hal.archives-ouvertes.fr/hal-01338164
Contributor : Yves Grandvalet <>
Submitted on : Tuesday, June 28, 2016 - 9:18:45 AM
Last modification on : Wednesday, May 27, 2020 - 10:21:22 AM

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Julien Chiquet, Yves Grandvalet, Guillem Rigaill. On coding effects in regularized categorical regression. Statistical Modelling, SAGE Publications, 2016, 16 (3), pp.228-237. ⟨10.1177/1471082X16644998⟩. ⟨hal-01338164⟩

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