MATLAB: Choose randomly between two functions

functionq-learningrandomrlswitch

Hello!
I'm implementing a Double Q-Learning Algorithm to the pendulum-v0. I'm looking at the pseudocode and there's one part of the algorithm which I'm not sure how to write.
If you see on line 8, it states:
With Pr = 0.5:
Q_a(s,a)
else
Q_b(s,a)
Alternatively the choice between Q_a and Q_b can be random. How can I implement this in my code so that for each episode either Q_a or Q_b are selected and run?
Thank you in advance!

Best Answer

randbit=randi(2,1,numEpisodes)-1;
for k=1:numEpisodes
    if randbit(k)
        Q_a(s,a)
    else
        Q_b(s,a)
    end
end
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