File:PCAKernel.png

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Français : Données non séparables linéairement à gauche. Changement de dimension de l'espace d'entrée par une combinaison non linéaire des axes: tel que avec . Les kernels remplacent ce type de combinaison triviale et fournissent directement le résultat du produit scalaire. Résultats de l'ACP sur le premier axe orthogonal à l'hyperplan (violet ou vert). On observe une amélioration des résultats avec la changement de dimensions (augmentation de la variance sur le premier axe). Note: une analyse en coordonnées polaire aurait rendu le problème linéaire.
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Author Mquantin

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current18:27, 27 July 2017Thumbnail for version as of 18:27, 27 July 20172,776 × 957 (322 KB)Mquantin (talk | contribs)Cross-wiki upload from fr.wikipedia.org

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