paul-buerkner/brms

Implementing the Skewed T-Distribution

オープン

#513 opened on 2018/09/03

 (11 件のコメント) (0 件のリアクション) (0 人の担当者)R (220 件のフォーク)batch import
familyfeaturegood first issue

Repository metrics

Stars
 (1,402 個のスター)
PR merge metrics
 (平均マージ 7d 21h) (30d で 1 merged PR)

説明

The skew normal family is great for modeling skewed gaussian data, and the student t distribution is great for outliers. But if one has both skewed data and outliers, the skewed t-distribution might be quite useful! How practical would it be to implement this in brms? This paper outlines an implementation in an MLE/EM setting, but I'm not quite skilled enough to implement it in Stan myself.

https://en.wikipedia.org/wiki/Skewed_generalized_t_distribution#Skewed_t_distribution

コントリビューターガイド