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[Studies in Computational Intelligence 481] Artur Babiarz, Robert Bieda, Karol Jędrasiak, Aleksander Nawrat (auth.), Aleksander Nawrat, Zygmunt Kuś (eds.) - Vision Based Systemsfor UAV Applications (2013, Sprin

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36 R. <strong>Bieda</strong> et al.<br />

case, where it is possible to dist<strong>in</strong>guish M- different objects classes. The easiest<br />

solution is the M- hyperplane construction <strong>in</strong> the values dimension, where each of<br />

them separates one 1 class from the others. The multiclass problem is actually<br />

the problem of resolv<strong>in</strong>g the one dimensional problems of . In that case<br />

the weight vector for 1…, allows to determ<strong>in</strong>e the attachment of the<br />

value vector to the class . The classification problem of the - class process can<br />

be def<strong>in</strong>ed as follows:<br />

0 0, , , 1,…, (26)<br />

The idea of the construction of such a M -class perceptron is shown on the<br />

picture 3.<br />

Fig. 3. Perceptron construction for a multiclass problem<br />

4.1 The Kesler Algorithm<br />

In this algorithm, a methodology that is used is the developed idea of the perceptron<br />

as a l<strong>in</strong>ear classifier from the dual-class to multiclass problem. As before, the<br />

l<strong>in</strong>ear discrim<strong>in</strong>ation function with weights, 1,…, is def<strong>in</strong>ed for every<br />

class of the objects. The vector of features described <strong>in</strong> the object is be<strong>in</strong>g<br />

assigned to the class if:<br />

, (27)<br />

For all the tra<strong>in</strong><strong>in</strong>g vectors of all classes, 1,…, are constructed 1<br />

vectors 0 ,0 ,…, ,…, ,…,0 of a dimension 1 1. This<br />

gives us a vector block with zero everywhere except for positions and <strong>in</strong> the<br />

block, for which we have, respectively, vector and (for ). There is also<br />

constructed a block weight vector ,…, . If then a natural<br />

consequence is that 0,1,…, . This is how the l<strong>in</strong>ear

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