期刊
ISCIENCE
卷 24, 期 8, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.isci.2021.102853
关键词
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资金
- MIT Laboratory for Financial Engineering
Bayes' rule is a fundamental principle that can help humans make adaptive decisions in stochastic environments, which emerges purely through the forces of evolution rather than conscious individual actions. The emergence of finite memory is influenced by specific environmental factors, providing a reasonable explanation for certain phenomena in human cognition.
Bayes' rule is a fundamental principle that has been applied across multiple disciplines. However, few studies have addressed its origin as a cognitive strategy or the underlying basis for generalization from a small sample. Using a simple binary choice model subject to natural selection, we derive Bayesian inference as an adaptive behavior under certain stochastic environments. Such behavior emerges purely through the forces of evolution, despite the fact that our population consists of mindless individuals without any ability to reason, act strategically, or accurately encode or infer environmental states probabilistically. In addition, three specific environments favor the emergence of finite memory-those that are Markov, nonstationary, and environments where sampling contains too little or too much information about local conditions. These results provide an explanation for several known phenomena in human cognition, including deviations from the optimal Bayesian strategy and finite memory beyond resource constraints.
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