How to model product of multiple random variables

[George]

Also, can you take a look at the codes? I draft these codes based on a question you have answered before, but it does not work:

How to set up a custom likelihood function for two variables

Thanks for the response. However, I still encountered some errors. I took the method like you suggested, but get a error like this: CustomizablePickler(buffer, self._reducers).dump(obj) AttributeError: Can't pickle local object 'likelihood.<locals>.obs' Here is my complete code. # Underlying parameters for prior 1 sigma_1 = 0.49786792462 mu_1 = 0.510236734833 # Underlying parameters for prior 2 sigma_2 = 0.62667474617 mu_2 = 0.169577686173 # Physical properties # Unit as default(KG) k_1 =…