November 2019
Intermediate to advanced
320 pages
13h 35m
French
Content preview from Machine Learning avec Scikit-Learn
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9.2 Mélanges gaussiens
259
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9.2.3 Modèles de mélange gaussien bayésien
Plutôt que de rechercher manuellement le nombre optimal de clusters, vous
pouvez utiliser la classe BayesianGaussianMixture, qui est capable d’attri-
buer des poids nuls (ou presque) aux clusters non nécessaires. Donnez au paramètre
n_components, correspondant au nombre de clusters, une valeur dont vous avez
de bonnes raisons de penser qu’elle est supérieure au nombre optimal de clusters (ceci
présuppose un minimum de connaissances sur le problème en question), et l’algo-
rithme éliminera automatiquement les clusters non ...
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