分位数 回归是给定 回归变量X，估计响应变量Y条件分位数的一个基本方法。
Quantile regression is a basic tool for estimating conditional quantiles of a response variable Y given a vector of regressors X.
结果在共轭先验分布的条件下，先验矩、分位数、众数与分位数三种方法确定的先验分布参数结果一致。
Results Under the condition of the conjugate prior distribution, the prior parameters computed by three methods were similar.
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