function [U] = umarg(Pr1, Pr2)
% function [U] = umarg(Pr1, Pr2)
%

% Copyright (c) 2004-2006 Alessio Botta, Alberto Dainotti, Antonio Pescapè
% Email: {a.botta , alberto , pescape }@unina.it
% DIS - Dipartimento di Informatica e Sistemistica
% University of Napoli Federico II, ITALY
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% 3. Redistributions of source code or in binary form must clearly reproduce
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Prob1 = Pr1(:,2)/100;
Prob2 = Pr2(:,2)/100;

index = find(Prob2 == 0);
Prob1_grant = Prob1(index);
Prob1(index) = [];
Prob2(index) = [];

U = (sum(Prob1.*(-log2(Prob2)+log2(Prob1))));

index = find(Prob1_grant == 0);
Prob1_grant(index) = [];
grant = sum(Prob1_grant.*(-log2(Prob1_grant)));

U = U + grant;