Matlab code:

figure; hold on
q = 0.001:.001:.999;
plot(q, log2(q)+1,'b','LineWidth',2);
Q =  2*q - q.^2 - (1-q).^2;
plot(q, 2*Q-1,'r','LineWidth',2);
S = q./(sqrt(q.^2 + (1-q).^2));
plot(q, (1/(1-sqrt(2)/2))*(S-sqrt(2)/2),'g','LineWidth',2);
xlabel('Probability Assigned to True Event');
ylabel('Normalized Score');

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