Principle Component Analysis

6 views (last 30 days)
Pramod Bhat
Pramod Bhat on 5 Feb 2012
Commented: Wu Ying on 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..

Sign in to answer this question.

Answers (1)

Walter Roberson
Walter Roberson on 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 Comment
Wu Ying
Wu Ying on 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 ?

Sign in to comment.

Categories

Find more on Dimensionality Reduction and Feature Extraction in Help Center and File Exchange

Tags

Community Treasure Hunt

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

Start Hunting!