The Multi-Armed Bandit Problem and Thompson Sampling
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The Multi-Armed Bandit Problem and Thompson Sampling
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Bandit Example: Consider a k-armed bandit problem with k = 4 actions, denoted 1, 2, 3, and 4. Consider applying to this problem a bandit algorithm using ε-greedy action selection, sample-average action-value estimates, and initial estimates of Q1(a) = 0, for all a. Suppose the initial sequence of actions and rewards is A1 = 1, R1 = 1, A2 = 2, R2 = 1, A3 = 2, R3 = 2, A4 = 2, R4 = 2, A5 = 3, R5 = 0. On some of these time steps, the ε case may have occurred, causing an action to be selected at ra
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