File Exchange

image thumbnail

Feature Analysis

version 1.6 (361 KB) by

This program analyzes an arff file (weka)

4 Downloads

Updated

View License

This program uses LDA and PCA to analyze features from weka arff file. The projection on PCA and LDA space visualizes the goodness of the features. If the features are good enough to be classified well they should have some kind of separation when projected on a 1 dimensional LDA or a 3 dimensional PCA space.

This MATLAB script assumes that the arff file has 2 classes named "Positive" and "Negative". However, it can be extended into any amount of class labels.

Comments and Ratings (2)

Ahmed Rabbi

% Eishob ajgubi jinish shudhu MATLAB ei shombhob

Przemo :)

Hye,
I have a question about Regu parameter that is optional in LDA procedure. I receive smaller classifiaction error (smaller about 10%) when I set it to 1. Why does the paraemter influence the output result so much ?
Thanks a lot !

Updates

1.6

Coded for more general use

1.2

Just changed the title

1.1

I've made the LDA space from 1D to 2D. Also included some sample arff files to read.

MATLAB Release
MATLAB 7.8 (R2009a)

Download apps, toolboxes, and other File Exchange content using Add-On Explorer in MATLAB.

» Watch video

Feature Vector Analysis/