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单词 prior
释义 prior

The initial value attached to a parameter in Bayesian statistics. The prior is regularly revised using a weighted average of the prior and the most recent obervations. The prior itself is not explained: it may derive from other people's observations, economic theory, rumour, or pure guesswork. The important point is that however beliefs originated, in Bayesian models they are revised in the light of experience.

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更新时间:2025/2/2 12:36:00