This was banned from Pinterest as “adult content”.
Wtf?
#art #artist #proportions #humanbody #drawing #painting #portraiture
This was banned from Pinterest as “adult content”.
Wtf?
#art #artist #proportions #humanbody #drawing #painting #portraiture
#statstab #478 Stuck between Zero and One: Modelling Non-Count Proportions with Beta and Dirichlet Regression
Thoughts: A few resources for proportion data.
#Dirichlet #proportions #betareg #count #tutorial
https://methodsblog.com/2019/08/06/beta-dirichlet-regression_en/

Post provided by JAMES WEEDON & BOB DOUMA Chinese translation provided by Zishen Wang 這篇博客文章也有中文版 Imagine the scene: you’re presenting your exciting research results at an important internation…
#statstab #477 Simulating data for Dirichlet regression with varying estimates
Thoughts: Interesting thread about an underused model.
#Dirichlet #brms #poweranalysis #rstats #proportions #stan #forum

Hello everyone, The shortest formulation of my problem is the following: I’m trying to design a power analysis by simulation for a Dirichlet regression model using brms. How could we calculate the shape parameter alpha of the Dirichlet distribution by hand from a theoretical model in order to feed it to brms::rdirichlet(n, alpha) to simulate data with chosen effects? The goal is to tweak manually the coefficients of the model to simulate data with varying effect sizes. Now for the lengthier c...
#statstab #439 {ZOID}
Thoughts: "zero-and-one inflated Dirichlet regression (also known as trinomial mixture models) in a Bayesian framework (Stan)"
Useful for composite proportions.
Fits Dirichlet regression and zero-and-one inflated Dirichlet regression with Bayesian methods implemented in Stan. These models are sometimes referred to as trinomial mixture models; covariates and overdispersion can optionally be included.
#statstab #435 Guide to understanding the intuition behind the Dirichlet distribution
Thoughts: Useful for composite proportions, but take ages in brms.
#brms #Dirichlet #proportions #modelling #rstats #r #betareg
https://www.andrewheiss.com/blog/2023/09/18/understanding-dirichlet-beta-intuition/