Hi, Below is my model which I am trying to sample Posterior Predictive distribution.
with pm.Model() as model_g:
Ke = pm.Normal('Ke',0.25,0.1) ϵ = pm.Normal('ϵ', 0,0.1) # Parametrization for the (alpha) shape parameter. Kej = 0.25 * np.exp(Ke) X_pred = pm.Normal('X_pred', mu=onepk(X0,t2,Ke), sd=ϵ, observed=X_sim1) trace_g = pm.sample(2000, tune=1000,cores=2)
My onepk function outputs X value as per,
X = X0 *np.exp(-Ke * time)
I am getting the below error with respect to derivative of my parameters.
My observed data is between 1e-3 and 50, and the mean, std for my Ke parameter is obtained from previous simulation.
I know this is a regular issue but I am not able to fix this.
Any input is highly appreciated and Thank you.