I changed the order of the data, sorted it by ID from smallest to largest, input it into the model after the same preprocessing, and got a completely different fitting result from before sorting. Why? fit_m01_1 <- stan(file=paste0(getwd(),'/stan_model/m01_RW.stan'), data=data_list, …

Can you share the code for how you processed and sorted the data? It’s almost certainly occurring due to an error here.

Thank you very much. The original data diagram is as shown in the figure. I sorted the data in Excel based on the subid in ascending order (starting from 1), and then performed the same processing in R. The code used in R is not convenient to show, but after sorting the original data 1, the fitting…

I’m sorry, but I’d have to see the R code of reading in the data and sorting it before I can help diagnose the issue.

it‘s the code [图片1] [图片2]

The order of the data cause different fitting result

Modeling

joyjoy July 6, 2024, 8:37am 6

Here is the code, can you provide some help?

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The order of the data cause different fitting result

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