What is JAGS?

JAGS (Just Another Gibbs Sampler) is a program for Bayesian analysis of statistical models using Markov Chain Monte Carlo (MCMC) simulation. It is similar to WinBUGS but can run on multiple platforms (Windows, macOS, Linux). JAGS is used to analyze complex statistical models that are difficult to solve analytically, particularly those involving hierarchical structures, non-standard distributions, or custom model specifications. Researchers and practitioners in fields like ecology, epidemiology, social sciences, and engineering use JAGS for parameter estimation, model comparison, and predictive inference within a Bayesian framework.