noun
prior distribution; prior probability distribution
Abbreviation of 事前確率分布. Used in Bayesian statistics to refer to the probability distribution before observing data.
See also: 事前確率分布 (じぜんかくりつぶんぷ)
ベイズ推定では、事前分布の選択が結果に影響を与える。
In Bayesian estimation, the choice of prior distribution affects the results.
Compound of 事前 (prior, beforehand) and 分布 (distribution), calque from English 'prior distribution'.