I want to test a math function ,like y=x1+x2 , but no observed data. x1=pm.Normal(‘x1’,mu=0.5,sd=0.5) x2=pm.Normal(‘x1’,mu=0.5,sd=0.5) y=x1+x2 Y=pm.Normal(‘Y’,mu = y,sd=1,observed =obs) so how to define reasonable observed data? and why ?

How to define reasonable observed data

sammosummo November 30, 2017, 2:59pm 7

Isn’t that the prior? I don’t understand the difference.

Topic		Replies	Views
Observed variable using custom function Questions	1	669	December 14, 2017
My misunderstanding with the argument 'observed' Questions	2	404	March 6, 2020
Problem model definition PyMC3 Questions	12	4749	September 21, 2017
Observed data dependent on random variables Questions	8	698	December 30, 2020
Sampling semantics of multiple observed variables Questions	5	2594	April 25, 2019