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On what type of data is PCA (principal component analysis) applied?
Author: W3D TeamStatus: PublishedQuestion passed 636 times
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Community Evaluations
Pierre Chaumont
30/07/2024
On peut toujours utiliser l'ACP en transformant la donnĂ©e alphanumĂ©rique ? Il faudrait peut ĂȘtre prĂ©ciser "sans ingĂ©nieurie de donnĂ©e" ou "sans modification de la donnĂ©e" ?
Auteur anonyme
23/08/2024
Ce n'est pas si simple, les donnĂ©es catĂ©gorielles ne fonctionnent pas du tout. Les variables doivent ĂȘtre quantitatives et comparables. MĂȘme un ensemble de donnĂ©es quantitatives ne peut pas ĂȘtre comparĂ© avec un ensemble de donnĂ©es continues s'il est trop petit.
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