November 2019
Intermediate to advanced
320 pages
13h 35m
French
Content preview from Machine Learning avec Scikit-Learn
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3.6 Classification multi-étiquettes
103
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3.6 CLASSIFICATION MULTI-ÉTIQUETTES
Jusqu’à maintenant, chaque observation a toujours été affectée à une seule classe.
Dans certains cas, vous pouvez souhaiter que votre classicateur indique plusieurs
classes pour chaque observation. Considérons un classicateur de reconnaissance
faciale: que doit-il faire s’il reconnaît plusieurs personnes sur la même image? Il doit
mettre une étiquette pour chaque personne qu’il reconnaît. Supposons que le classi-
cateur ait été entraîné à reconnaître trois visages, ceux d’Alice, de Bob et de Charlie.
Lorsqu’on ...
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