Hi, I’m relatively new to pymc3 but hope someone can help. I have a very large model. When I run it for most of my datasets, it works fine and samples without problems. However, with a few of my datasets, it works intermittently. It sometimes finishes successfully like the others, but often crashes…

"ValueError: Mass matrix contains zeros on the diagonal" error, how to debug?

junpenglao February 10, 2020, 8:04pm 2

You can find some pointer here: Frequently Asked Questions

Topic		Replies	Views
ValueError: Mass matrix contains zeros on the diagonal. The derivative of RV `@@@`.ravel()[0] is zero v3 modeling	0	578	September 13, 2022
ValueError: Mass matrix contains zeros on the diagonal Questions	1	2210	March 16, 2020
I get "Bad initial energy" even on one of the examples Questions	3	1141	March 6, 2019
Mass Matrix contains zero Error. Scaling data with a diagonal matrix of random variables Questions	6	478	December 11, 2020
Getting Mass matrix contains zeros on the diagonal Questions	2	594	May 2, 2021