Weighted combiner (Adaboost weights)
W = WVOTEC(A,V) compute weigths and store W = WVOTEC(V,U) Construct weighted combiner using weights U
The set of trained classifiers V is combined using weighted majority voting. If given the weights U are used. If not given, the weights are computed from the classification results of the labeled dataset A using 0.5*log((1-E)/E) if E is the classifier error.