no code implementations • 9 Apr 2020 • Karl J. Friston, Thomas Parr, Peter Zeidman, Adeel Razi, Guillaume Flandin, Jean Daunizeau, Oliver J. Hulme, Alexander J. Billig, Vladimir Litvak, Rosalyn J. Moran, Cathy J. Price, Christian Lambert
This technical report describes a dynamic causal model of the spread of coronavirus through a population.
no code implementations • 21 Mar 2019 • Jean Daunizeau
This note is concerned with an accurate and computationally efficient variational bayesian treatment of mixed-effects modelling.
no code implementations • 6 Mar 2017 • Jean Daunizeau
So-called sparse estimators arise in the context of model fitting, when one a priori assumes that only a few (unknown) model parameters deviate from zero.
no code implementations • 2 Mar 2017 • Jean Daunizeau
Variational approaches to approximate Bayesian inference provide very efficient means of performing parameter estimation and model selection.
no code implementations • 1 Mar 2017 • Jean Daunizeau
This note is concerned with accurate and computationally efficient approximations of moments of Gaussian random variables passed through sigmoid or softmax mappings.