Chris Mathys

Also a problem here. All of this code works, so these are non-problems being flagged as problems.

Hi Vae - just vey quickly, scanning your problem, I suspect that at some point you're taking the log (or square root) of a negative number, which gives you a...

Hi Vae - @alexjhess might be able to help you with multimodal responses. Regarding the uncertainty calculations, much of that is about finding the right values in multidimensional arrays. I...

You can get a 2-level binary HGF by fixing the parameter kappa_2 to zero (i.e., to -Inf in logit-space). That cuts off the third level from any information, effectively removing...

Hi Ananda, It seem like you have a setup much like the one in this paper: Reed, E. J., Uddenberg, S., Suthaharan, P., Mathys, C. D., Taylor, J. R., Groman,...

That all seems correct. You could try turning the problem around: choose a set of parameters that seem plausible and simulate data with these, if they work. If they don't,...

At the level of the generative model, the parameter rho is a constant drift parameter. This means that instead of assuming a Gaussian random walk without drift for rho=0 (the...

Dear @ahmadkhanloo, We have never made a particular paper dedicated to the derivation of these update equations. In any case, they follow from the procedure set out in [Mathys et...