Unverified50% confidenceFactExact time
The concept of variable reward was first proposed by B.F. Skinner through operant conditioning experiments, referring to the strongest sustained response a behavioral subject exhibits when the timing and frequency of rewards are unpredictable.
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10/28/2026
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UnverifiedReward engineering is essentially a highly iterative process: design the reward, observe behavior, discover loopholes, correct the reward, and repeat.77% similarUnverifiedIntermittent variable rewards originate from operant conditioning research and were first systematically described by Skinner through animal experiments.75% similarUnverifiedPotential-based reward shaping guarantees that the optimal policy remains unchanged.75% similarVerifiedReward shaping refers to adding extra, denser guiding reward signals on top of the original sparse reward to help agents learn faster and more correctly.74% similarUnverifiedProcess reward scores intermediate steps within the multi-step trajectories an agent executes, providing a denser signal that alleviates the credit assignment problem in long-horizon tasks; outcome reward is given only at the end of a task based on the final state, with a sparse signal but a clear objective.73% similar
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