title: Rejoinder.
abstract: This is the reply to the discussion of the two companion articles on the theory and application of "probability estimation with machine learning methods for dichotomous and multicategory outcome" by Kruppa et al. (2014; 534-563 and 564-583). The five discussion papers are Binder (2014; 584-587), Boulesteix and Schmid (2014; 588-593), Shin and Wu (2014; 594-596), Simon (2014; 597-600), and Steyerberg et al. (2014; 601-606).
authors.affiliation: Institut für Medizinische Biometrie und Statistik, Universität zu Lübeck, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany; Zentrum für Klinische Studien, Universität zu Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Ziegler
mesh_terms: D001185:Artificial Intelligence; D016015:Logistic Models; D011336:Probability; D015203:Reproducibility of Results; D012984:Software
keywords: Logistic regression; Machine learning; Penalization; Probability estimation