Bayesian inference of COVID-19 spreading rates in South Africa

R Mbuvha, T Marwala - PloS one, 2020 - journals.plos.org
The Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has
highlighted the need for performing accurate inference with limited data. Fundamental to the …

Finite element model updating using the shadow hybrid Monte Carlo technique

I Boulkaibet, L Mthembu, T Marwala, MI Friswell… - … Systems and Signal …, 2015 - Elsevier
Recent research in the field of finite element model updating (FEM) advocates the adoption
of Bayesian analysis techniques to dealing with the uncertainties associated with these …

Finite element model updating using fish school search and volitive particle swarm optimization

I Boulkaibet, L Mthembu… - Integrated Computer …, 2015 - content.iospress.com
A customized version of Fish School Search (FSS) algorithm and the innovative volitive
operator of FSS (which is incorporated into the regular particle swarm optimization (PSO) …

Finite element model updating using Hamiltonian Monte Carlo techniques

I Boulkaibet, L Mthembu, T Marwala… - Inverse Problems in …, 2017 - Taylor & Francis
Bayesian techniques have been widely used in finite element model (FEM) updating. The
attraction of these techniques is their ability to quantify and characterize the uncertainties …

On data-driven management of the COVID-19 outbreak in South Africa

R Mbuvha, T Marwala - medRxiv, 2020 - medrxiv.org
The rapid spread of the novel coronavirus (SARS-CoV-2) has highlighted the need for the
development of rapid mitigating responses under conditions of extreme uncertainty. While …

Prediction error variances in Bayesian model updating employing data sensitivity

K Prajapat, S Ray-Chaudhuri - Journal of Engineering Mechanics, 2016 - ascelibrary.org
Efficiency of a Bayesian model updating algorithm is greatly affected by the choice of
variance of prediction error models of different data points (evidence) used for model …

Gibbs sampling for damage detection using complex modal data from multiple setups

A Das, N Debnath - ASCE-ASME Journal of Risk and Uncertainty in …, 2021 - ascelibrary.org
This paper presents a novel Gibbs sampling approach for structural health monitoring (SHM)
with detection of structural changes/damages using incomplete complex modal data …

A differential evolution Markov chain Monte Carlo algorithm for Bayesian model updating

M Sherri, I Boulkaibet, T Marwala… - Special Topics in Structural …, 2019 - Springer
The use of the Bayesian tools in system identification and model updating paradigms has
been increased in the last 10 years. Usually, the Bayesian techniques can be implemented …

Finite element model updating using a shuffled complex evolution Markov chain algorithm

M Sherri, I Boulkaibet, T Marwala… - Model Validation and …, 2022 - Springer
In this paper, a probabilistic-based evolution Markov chain algorithm is used for updating
finite element models. The Bayesian approaches are well-known algorithms used for …

Finite element model updating using an evolutionary Markov chain Monte Carlo algorithm

I Boulkaibet, L Mthembu, T Marwala, MI Friswell… - Dynamics of Civil …, 2015 - Springer
One challenge in the finite element model (FEM) updating of a physical system is to estimate
the values of the uncertain model variables. For large systems with multiple parameters this …