Dear all Stanians, Hope this message finds you all well. I am writing to ask a question about using array in Stan code blocks. I am trying to estimate a two-level logit model with intercept and slopes as outcomes. Thus I need to have a multivariate prior for the random components at level-2. But I …

You need to update your RStan install; array is a syntax that is newer but should be supported by the latest RStan.

Thanks a lot for your suggestion. I just updated rstan, and it gives me the same error. Jun

Does rstan even support array? CRAN version is still at 2.21 which is before array was introduced.

If none works out, you can fall back to the old syntax .

Oops, sorry, yes Rstan on CRAN isn’t up to date with the new array syntax. Sorry, I had things confused with cmdstanr

Thank you all for your pointers. I think I would back off from the new coding style. I have two questions. The first is why we need array since we have matrix. Is array designed for easy looping? Any pointer to the difference between the two and when to use arrays in Stan. Second, a specific questio…

Now I’ve uploaded my data, R file, and error message. Would very much appreciate any pointer. Note that I also updated rstanarm to its most current version. What I am trying to estimate is a two-level logit regression. The binary response variable is heart, and individual level predictors are age10,…

I think bernoulli_logit is another feature that’s newer than your RStan version supports. You’ll have to use inv_logit()manually instead.

Hi Mike, Thanks a lot for your pointer. First, I updated rstanarm, and then I also tried to use old syntax like the following for (n in 1:N) { real eta; real prob; eta <- x[n] * beta[jj[n]]; prob <- 1/(1+exp(-1*eta)); y[n] ~ bernoulli(prob); } It still doesn’t work. Jun …

Array function coding error for multlevel logit model with multivariate priors

Modeling

WardBrian February 26, 2022, 2:37pm 7

There are ways to use newer versions of RStan, see Rstan Versioning - #2 by rok_cesnovar

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Array function coding error for multlevel logit model with multivariate priors

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