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How do I update Q-values in Q-learning when rewards may only be received after many actions?

In the Tableau form of Q-learning the textbook way to attribute reward to a whole chain of state/action pairs leading to a reward is an eligibility trace. Instead of $Q(S_3,A_3) = Q(S_2,A_2) = Q(S_1,...
foreverska's user avatar
  • 1,298
1 vote
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A question about the reward calculation in the Hindsight Experience Replay algorithm

Meanwhile I can answer my own question. After figuring it out, what the HER algorithm really needs, I found out, that the right answer is 1: you need a reward function for calculating the new reward ...
Dave's user avatar
  • 172

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