I am running a regression with a negative binomial error. The outcome is occasionally censored from below, but I am getting the following error on the line with the neg_binomial_2_lcdf call: Exception: grad_2F1: k (internal counter) exceeded 100000 iterations, hypergeometric function gradient did …

`neg_binomial_2_lcdf()` "grad_2F1: k (internal counter) exceeded 100000 iterations"

sakrejda May 5, 2019, 10:14pm 4

That shouldn’t be crashing a chain, this is good to know. I’ll check what is…

Big size of a vector for posterior in a truncated model in brms

Topic		Replies	Views
Initialization between (-2, 2) failed after 100 attempts in Negative Binomial Distribution Modeling bioinformatics	6	1634	March 15, 2020
Exception: neg_binomial_2_log_glm_lpmf: Failures variables[15] is -1.45964e+09 Modeling fitting-issues , cmdstanr , brms	32	1343	March 30, 2022
Truncated model for neg_binomial_2 Modeling	20	1700	June 9, 2017
Neg_binomial_2_log_rng overflow Modeling	12	434	March 28, 2024
Initialization failed with truncated normal distribution Modeling rstan , truncated , initialization	6	1193	March 16, 2021