Principle Component Analysis

2 Ansichten (letzte 30 Tage)
Pramod Bhat
Pramod Bhat am 5 Feb. 2012
Kommentiert: Wu Ying am 12 Feb. 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..

Melden Sie sich an, um diese Frage zu beantworten.

Antworten (1)

Walter Roberson
Walter Roberson am 5 Feb. 2012
The "best" features or variables are the ones that have the most "explanatory power" -- the ones that come out highest in PCA.
  1 Kommentar
Wu Ying
Wu Ying am 12 Feb. 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 ?

Melden Sie sich an, um zu kommentieren.

Kategorien

Mehr zu Dimensionality Reduction and Feature Extraction finden Sie in Help Center und File Exchange

Tags

Community Treasure Hunt

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

Start Hunting!

Translated by