Temporal Dependency Modeling in Financial Markets

Researcher: Small Tshithavhana, University of the Witwatersrand, JohannesburgSupervisor: Dr. Walter Mudzimbabwe, University of the Witwatersrand, Johannesburg Financial forecasting has become increasingly important in today’s global market due to its ability toassess risk and inform decision-making. However, accurately forecasting financial markets is challengingdue to their stochastic nature and

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Comparison of ensemble nlearning and neural network models for default risk analysis: a reproduction study

Researcher: Tebogo Malatsi, University of the Witwatersrand, JohannesburgSupervisor: Assoc. Prof. YudhvirSeetharam, University of the Witwatersrand, Johannesburg This study replicates prior research on default risk assessment using ensemble and deep learning techniques, leveraging payment data from the UCI Machine Learning Repository for Taiwan. It specifically compares boosting, random

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Email monitoring system using machine learning

Researcher: Netshamutshedzi Ndivhuwo, University of VendaSupervisor: Dr Ibidun Obagbuwa, University of the Witwatersrand, Johannesburg This study investigates email monitoring systems using machine learning. In this study, we contribute to previous studies on spam problems to improve accuracy by utilising a variety of methods.  

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Ever wondered what to use to make the right investment decision?

Researcher: Dimpho Mosaka, University of the Witwatersrand, JohannesburgSupervisor: Dr Martins Arasomwan, University of the Witwatersrand, Johannesburg More studies have demonstrated that the DeepNeural Networks(DNN)techniques can be used to forecast the stock market price. This research project aims to investigate the effectiveness of deep neural network techniques in

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Customer segmentation using the self-organizing map and its variants

Researcher: Mufunwa Nemushungwa, University of the Witwatersrand, JohannesburgSupervisor: Dr Martins Arasomwan, University of the Witwatersrand, Johannesburg This research compares three variations of SOM: standard SOM, SOM combined with K-means, and SOM paired with the social spider optimization (SSO) algorithm in performing customer segmentation. The results show that

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Identifying themes in online harassment using text analytics

Researcher:  Miss Safiyyah Ismail, The University of the WitwatersrandSupervisor: Professor Rod Alence, University of the Witwatersrand, Johannesburg Nothing quite affects human behaviour as much as the internet. With a cloak of invisibility and anonymity in cyberspace, a new phenomenon known as cyberharassment has been created. It is

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Supervised versus Semi-supervised Machine Learning in the search for new Physics with the ATLAS data

Researcher: Lindiwe Malobola, University of the Witwatersrand, JohannesburgSupervisor: Professor Bruce Mellado, University of the Witwatersrand, Johannesburg Present-day machine learning methods can be used to build very powerful models for difficult collider physics problems. In numerous applications, the models are often built using fully supervised machine learning methods

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