noun
prior probability distribution
Technical term in Bayesian statistics; refers to the distribution assigned to a parameter before observing data.
See also: 事前確率 (じぜんかくりつ)
ベイズ推定では、事前確率分布を設定する必要がある。
In Bayesian estimation, it is necessary to set a prior probability distribution.
Compound of 事前 (prior, beforehand), 確率 (probability), and 分布 (distribution). A direct translation of the English statistical term.