Uncertainty and Exploration
Uncertainty and Exploration
复制标题
不确定性与探索
DOI:
10.1101/265504
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
S. Gershman
中科院分区:
文献类型:
--
作者:
S. Gershman
In order to discover the most rewarding actions, agents must collect information about their environment, potentially foregoing reward. The optimal solution to this “explore-exploit” dilemma is often computationally challenging, but principled algorithmic approximations exist. These approximations utilize uncertainty about action values in different ways. Some random exploration algorithms scale the level of choice stochasticity with the level of uncertainty. Other directed exploration algorithms add a “bonus” to action values with high uncertainty. Random exploration algorithms are sensitive to total uncertainty across actions, whereas directed exploration algorithms are sensitive to relative uncertainty. This paper reports a multi-armed bandit experiment in which total and relative uncertainty were orthogonally manipulated. We found that humans employ both exploration strategies, and that these strategies are independently controlled by different uncertainty computations.
DOI:
10.1037/a0038199
发表时间:
2014
期刊:
Journal of experimental psychology. General
影响因子:
--
作者:
Wilson,RobertC;Geana,Andra;White,JohnM;Ludvig,ElliotA;Cohen,JonathanD
通讯作者:
Cohen,JonathanD