November 2019
Intermediate to advanced
320 pages
13h 35m
French
Content preview from Machine Learning avec Scikit-Learn
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2.6 Sélectionner et entraîner un modèle
71
© Dunod – Toute reproduction non autorisée est un délit.
Attendez ! Que se passe-t-il ? Pas d’erreur du tout ? Ce modèle peut-il être
absolument parfait ? Bien sûr, il est beaucoup plus probable que le modèle sura-
juste considérablement les données. Comment s’en assurer ? Comme nous l’avons
vu précédemment, nous ne voulons pas toucher au jeu de test avant d’être prêts
à lancer un modèle de confiance, c’est pourquoi il va falloir utiliser une partie
du jeu d’entraînement pour l’entraînement, et une partie pour la validation du
modèle.
2.6.2 Améliorer l’évaluation par la validation croisée
Un moyen d’évaluer ...
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