function [sim] = simCounting(AintersectB, AnotB, BnotA, alpha, beta, gamma)
% count common features positively and exclusive features negatively
% sim = alpha*AintersectB - beta*AnotB - gamma*BnotA
% Inputs:
% 1. AintersectB: common features in A and B
% 2. AnotB: A's exclusive features
% 3. BnotA: B's exclusive features
% 4. alpha, beta, gamma: constants
% Outputs:
% 1. sim: similarity value
sumAintersectB = 0;
sumAnotB = 0;
sumBnotA = 0;
for i= 1:length(AintersectB)
    if(AintersectB(i) ~= -1)
        sumAintersectB = sumAintersectB + 1;
    end
    if(AnotB(i) ~= -1)
        sumAnotB = sumAnotB + 1;
    end
    if(BnotA(i) ~= 1)
        sumBnotA = sumBnotA + 1;
    end
end
%sim = (alpha .* sumAintersectB) - (beta .* sumAnotB) - (gamma .* sumBnotA);
sim = sumAintersectB;


%% Example
%% >> comm
%% comm =
%%      1     1     0
%% >> A
%% A =
%%      0     0     1
%% >> B
%% B =
%%      0     0     0
%% >> sim = simCounting(comm, A, B, 1, 0.5, 0.5);
%% >> sim
%% sim =
%%     1.5000