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Deep Learning avec Keras et TensorFlow
book

Deep Learning avec Keras et TensorFlow

by Aurélien Géron
May 2020
Intermediate to advanced
576 pages
26h 55m
French
Dunod
Content preview from Deep Learning avec Keras et TensorFlow
402
Chapitre 10. Apprentissage par renforcement
Pour comprendre son fonctionnement, nous devons tout d’abord remarquer que
la valeur Q d’un couple état-action (s, a) peut être exprimée sous la forme Q(s, a)
=V(s)+ A(s, a), où V(s) est la valeur de l’état s et A(s, a) correspond à l’avantage
de prendre l’action a dans l’état s, en comparaison de toutes les autres actions pos
-
sibles dans cet état. Par ailleurs, la valeur d’un état est égale à la valeur Q de la
meilleure action a
*
pour cet état (puisque nous supposons que la politique optimale
sélectionnera la meilleure action). Par conséquent, V(s) = Q(s, a
*
), ce qui implique
que A(s,a
*
) = 0. ...
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Publisher Resources

ISBN: 9782100805020