Effacer les filtres
Effacer les filtres

Principle Component Analysis

1 vue (au cours des 30 derniers jours)
Pramod Bhat
Pramod Bhat le 5 Fév 2012
Commenté : Wu Ying le 12 Fév 2015
Friends,
I understood explanation given on PCA in help. But i am not able to understand how to select the best features/variables. Can anybody help me in this regard ?
If you have an example with data please send it to bbhatpramod@gmail.com. Your help would be greatly appreciated.
Thanq..

Connectez-vous pour répondre à cette question.

Réponses (1)

Walter Roberson
Walter Roberson le 5 Fév 2012
The "best" features or variables are the ones that have the most "explanatory power" -- the ones that come out highest in PCA.
  1 commentaire
Wu Ying
Wu Ying le 12 Fév 2015
for the variables, it may be a positive or negative contribute to the principle component. How to choose the highest? Just the absolute value or ?

Connectez-vous pour commenter.

Catégories

En savoir plus sur Dimensionality Reduction and Feature Extraction dans Help Center et File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by