paul-buerkner/brms

Implementing the Skewed T-Distribution

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#513 ouverte le 3 sept. 2018

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Description

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

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