Dear stan forum users, I ran into some trouble when fitting an IRT-Diffusion model via Stan. When I run the following code it first displays several messages of type: “Rejecting initial value: Log probability evaluates to log(0), i.e. negative infinity. Stan can’t start sampling from this initial …

Trouble fitting a Q-Diffusion IRT model in Stan

pasjor June 4, 2018, 1:38pm 3

Thank you very much - I was able to fix it with your help!

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