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(Created page with "In this part of the lecture FDA for 2 classes is described, however you can find the discribtion for k classes in the next pages which is reffered to as FDA for multi class probl...") |
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In this part of the lecture FDA for 2 classes is described, however you can find the discribtion for k classes in the next pages which is | In this part of the lecture FDA for 2 classes is described, however you can find the discribtion for k classes in the next pages which is referred to as FDA for multi class problems. | ||
The equations here are correct for two class case and you can find for multi class in the following pages, in multiclass case since W is not a vector anymore (it is a matrix) therefore instead of | The equations here are correct for two class case and you can find for multi class in the following pages, in multiclass case since W is not a vector anymore (it is a matrix) therefore instead of | ||
max (W<sup>T</sup> S<sub>B</sub> W / W<sup>T</sup> S<sub>W</sub> W) , it should be written as max (Tr (W<sup>T</sup> S<sub>B</sub> W) / Tr (W<sup>T</sup> S<sub>W</sub> W)). | max (W<sup>T</sup> S<sub>B</sub> W / W<sup>T</sup> S<sub>W</sub> W) , it should be written as max (Tr (W<sup>T</sup> S<sub>B</sub> W) / Tr (W<sup>T</sup> S<sub>W</sub> W)). | ||
Revision as of 14:04, 8 October 2010
In this part of the lecture FDA for 2 classes is described, however you can find the discribtion for k classes in the next pages which is referred to as FDA for multi class problems. The equations here are correct for two class case and you can find for multi class in the following pages, in multiclass case since W is not a vector anymore (it is a matrix) therefore instead of max (WT SB W / WT SW W) , it should be written as max (Tr (WT SB W) / Tr (WT SW W)).