Research & Publications
Two books, 18 peer-reviewed journal articles, and 5 conference papers spanning Bayesian inference, Hamiltonian Monte Carlo, derivatives pricing, credit risk modelling, fraud detection, and AI for public finance governance.
Predicting block delays in Bitcoin blockchain via Bayesian and non-Bayesian logistic regression
Mgcima, P.T., Mongwe, W.T., Olukanmi, P. · IEEE Access, vol. 13, pp. 82573–82585
A novel framework for enhancing transparency in credit scoring: Leveraging Shapley values for interpretable credit scorecards
Hlongwane, R., Ramaboa, K., Mongwe, W.T. · PLoS ONE 19(8): e0308718
Enhancing credit scoring accuracy with a comprehensive evaluation of alternative data
Hlongwane, R., Ramaboa, K., Mongwe, W.T. · PLoS ONE 19(5): e0303566
A Signature Transform of Limit Order Book Data for Stock Price Prediction
Sidogi, T., Mongwe, W.T., Mbuvha, R., Olukanmi, P., Marwala, T. · IEEE Access, vol. 11, pp. 70598–70609
A novel workflow for streamflow prediction in the presence of missing gauge observations
Mbuvha, R., Adounkpe, J., Houngnibo, M., Mongwe, W.T., Nikraftar, Z., Marwala, T., Newlands, N. · Environmental Data Science, 2, E23
An Analysis of Local Government Financial Statement Audit Outcomes in a Developing Economy Using Machine Learning
Mabelane, K., Mongwe, W.T., Mbuvha, R., Marwala, T. · Sustainability 15(1), 12
Fusing Sell-Side Analyst Bidirectional Forecasts Using Machine Learning
Sidogi, T., Mongwe, W.T., Mbuvha, R., Marwala, T. · IEEE Access, vol. 10, pp. 76966–76974
Shadow Magnetic Hamiltonian Monte Carlo
Mongwe, W.T., Mbuvha, R., Marwala, T. · IEEE Access, vol. 10, pp. 34340–34351
Bayesian inference of local government audit outcomes
Mongwe, W.T., Mbuvha, R., Marwala, T. · PLoS ONE 16(12): e0261245
Separable Shadow Hamiltonian Hybrid Monte Carlo for Bayesian Neural Network Inference in Wind Speed Forecasting
Mbuvha, R., Mongwe, W.T., Marwala, T. · Energy and AI (2021): 100108
Locally Scaled and Stochastic Volatility Metropolis-Hastings Algorithms
Mongwe, W.T., Mbuvha, R., Marwala, T. · Algorithms 14(12): 351
Adaptively Setting the Path Length for Separable Shadow Hamiltonian Hybrid Monte Carlo
Mongwe, W.T., Mbuvha, R., Marwala, T. · IEEE Access, vol. 9, pp. 138598–138607
Quantum-Inspired Magnetic Hamiltonian Monte Carlo
Mongwe, W.T., Mbuvha, R., Marwala, T. · PLoS ONE
Utilising Partial Momentum Refreshment in Separable Shadow Hamiltonian Hybrid Monte Carlo
Mongwe, W.T., Mbuvha, R., Marwala, T. · IEEE Access, vol. 9
Magnetic Hamiltonian Monte Carlo With Partial Momentum Refreshment
Mongwe, W.T., Mbuvha, R., Marwala, T. · IEEE Access, vol. 9, pp. 108009–108016
Adaptive Magnetic Hamiltonian Monte Carlo
Mongwe, W.T., Mbuvha, R., Marwala, T. · IEEE Access, vol. 9, pp. 152993–153003
Antithetic Magnetic and Shadow Hamiltonian Monte Carlo
Mongwe, W.T., Mbuvha, R., Marwala, T. · IEEE Access, vol. 9, pp. 49857–49867
A survey of automated financial statement fraud detection with relevance to the South African context
Mongwe, W.T., Malan, K.M. · SA Computer Journal, 32(1), pp. 74–112
Creating Synthetic Volatility Surfaces using Generative Adversarial Networks with Static Arbitrage Loss Conditions
Sidogi, T., Mongwe, W.T., Mbuvha, R., Marwala, T. · IEEE SSCI, pp. 1423–1429
Imputation of Missing Streamflow Data at Multiple Gauging Stations in Benin Republic
Mbuvha, R., Adounkpe, P., Mongwe, W.T., Houngnibo, M., Newlands, N., Marwala, T. · AAAI Climate Change Workshop
Probabilistic Inference of South African Equity Option Prices Under Jump-Diffusion Processes
Mongwe, W.T., Sidogi, T., Mbuvha, R., Marwala, T. · IEEE CIFEr, pp. 1–8
On Voter Characterisation in Developing Democracies
Mongwe, W.T., Mbuvha, R., Marwala, T. · NeurIPS AI for Credible Elections Workshop
The Efficacy of Financial Ratios for Fraud Detection Using Self-Organising Maps
Mongwe, W.T., Malan, K.M. · IEEE SSCI, pp. 1100–1106
Co-supervising research at the intersection of ML and financial risk.
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