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Questions tagged [sarsa]

For questions related to the reinforcement learning (on-policy) algorithm called SARSA, which stands for (s, a, r, s', a').

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1answer
72 views

Understanding the n-step off-policy SARSA update

In Sutton & Barto's book (2nd ed) page 149, there is the equation 7.11 I am having a hard time understanding this equation. I would have thought that we should be moving $Q$ towards $G$, where $...
3
votes
2answers
288 views

Can Q-learning be used in a POMDP?

Can Q-learning (and SARSA) be directly used in a Partially Observable Markov Decision Process (POMDP)? If not, why not? My intuition is that the policies learned will be terrible because of partial ...
2
votes
1answer
625 views

Expected SARSA vs SARSA in “RL: An Introduction”

Sutton and Barto state in the 2018-version of "Reinforcement Learning: An Introduction" in the context of Expected SARSA (p. 133) the following sentences: Expected SARSA is more complex ...