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andrewcparnell / simmr

A stable isotope mixing model in R
https://andrewcparnell.github.io/simmr/
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The error structure used in solo run #53

Open pixelRBT opened 2 months ago

pixelRBT commented 2 months ago

Dear Parnell,

I have been studying the error structure of Bayesian isotope source mixing models recently. When dealing with data containing only one mixture, simmr use a solo run. What is the error structure used when running a solo run? Process error + residual error or process error only (like MixSIR and MixSIAR)?

Sincerely, Liu

emmagovan commented 1 month ago

Hi, when running a solo run the model uses a prior for $\sigma_j$ with high prior mass on zero - so essentially it becomes process error only like MixSIR/MixSIAR