06.03.2013 Views

Artificial Intelligence and Soft Computing: Behavioral ... - Arteimi.info

Artificial Intelligence and Soft Computing: Behavioral ... - Arteimi.info

Artificial Intelligence and Soft Computing: Behavioral ... - Arteimi.info

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

AND<br />

z1<br />

s11<br />

OR<br />

w11 w12 w 1n<br />

v 11<br />

v12<br />

OR<br />

s12<br />

x1 x2 x n<br />

Fig. 14.13. Architecture of an AND-OR neuron<br />

In the figure, the pseudo-median is defined as:<br />

pseudomedian (χχχχ)<br />

= (1/2) Max [Min (x1, x2, x3), Min (x2, x3, x4), Min (x3, x4, x5)] +<br />

(1/2) Min [Max (x1, x2, x3), Max (x2, x3, x4), Max (x3, x4, x5)],<br />

which loses little accuracy w.r.t. typical median filter.<br />

y<br />

z2<br />

v 1n<br />

Output layer<br />

Hidden layer<br />

Input layer<br />

A set of 10 input-output patterns have been used to train pseudo-median<br />

filter. The weights wij, after training the net, are saved for a subsequent<br />

recognition phase. In the recognition phase, the neurons can compute the<br />

pseudo-median, when the input data points are given.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!