For all Stan experts and users @bgoodri @ScottAlder @bbbales2 @stemangiola when compiling following code, I am getting errors: SAMPLING FOR MODEL ‘a3fc5f3f8314f35eb844526c8bbadc9d’ NOW (CHAIN 1). Chain 1: Rejecting initial value: Chain 1: Log probability evaluates to log(0), i.e. negative inf…

Can you post the code that you are using to run the model?

I think the way to debug stuff like this is to try to break things down into a small a piece as possible. I gues I’d start with: If you don’t have the integrals, do things work? Are the integrals returning the values you expect? (add print statements to your code to debug this)

Hi Ara, @Ara_Winter Please find this; n_chains <- 2 inits<-list() for (chain in 1:n_chains) inits[[chain]]<-initializer() fit<-stan(model_code = data_code, data = file_data, warmup = 150, iter = 300, chains =n_chains,thin = 1,init=inits)```

@bbbales2 Thanks for the reply, I don’t how to check whether each line gives me an output or not using c++, but I did it in R, so have to change this integral_1d() to integration(), Am I correct? So then, I could have results. But, I didn’t check this code without the integration,I ll try it now. T…

[image] evihas: V[1] = integrate_1d(fun_integral,t[1],t[2],{mu,sigma2},{0.0}, x_i, 1e-8); print debugging works in Stan, so I might add prints around: V[1] = integrate_1d(fun_integral,t[1],t[2],{mu,sigma2},{0.0}, x_i, 1e-8); as a start. Like, print(V[1]) and print(t[1], t[2], mu, sigma2) a…

I added the commands, print(V[1]); print(t[1],t[2]) print(mu,sigma2) and it printed for all i (looping over i = 1:5) 1). Chain 1: 46.0932 5051 4.178590.0171743 46.0932 5051 4.178590.0171743 46.0932 5051 4.178590.0171743 46.0932 5051 4.178590.0171743 46.0932 5051 4.178590.0171743

Ooo, maybe add commas and it’ll be more readable. For instance, print(mu, ", ", sigma2); Then once you have that you can decide if the integrals make sense or not

@bbbales2 I can do printing V[1] and t[1], t[2], mu, sigma2 with looping over i, but not the stan(), then I updated my rstan package version as 2.21.1, then it is giving me such errors, Why is that? I am struggling to have an output. Compilation ERROR, function(s)/method(s) not created! C:/rtoo…

Errors when doing compilation in RStan model with integration

Modeling

bbbales2 July 23, 2020, 4:47am 10

Check here for the latest install instructions for Windows: Rstan on Windows, there’s been some difficulties lately. There should be build links for R 4.0 in there in the first post.

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Errors when doing compilation in RStan model with integration

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