statsmodels.genmod.bayes_mixed_glm.PoissonBayesMixedGLM.vb_elbo_grad¶ PoissonBayesMixedGLM.vb_elbo_grad(vb_mean, vb_sd)[source]¶ Returns the gradient of the model’s evidence lower bound (ELBO). Last update: Apr 19, 2024