Explanipedia

A comparative study of imputation techniques for missing values in healthcare diagnostic datasets Open

Luke Oluwaseye Joel, Wesley Doorsamy, Babu Sena Paul · 2025

Missing values are a common feature of real-world datasets, particularly in healthcare data. This can be challenging when applying machine learning algorithms, as most models perform poorly in the presence of incomplete data. The goal of t…

Edge vs. Cloud: Empirical Insights into Data-Driven Condition Monitoring Open

Chikumbutso Christopher Walani, Wesley Doorsamy · 2025

This study evaluates edge and cloud computing paradigms in the context of data-driven condition monitoring of rotating electrical machines. Two well-known platforms, the Raspberry Pi and Amazon Web Services Elastic Compute Cloud, are used …

Condition Monitoring of Electric Machines: Modern Frameworks and Data-Driven Methodologies Open

Wesley Doorsamy · 2025

Electrical machines are at the centre of most engineering processes, with rotating electrical machines, in particular, becoming increasingly important in recent history due to their growing applications in electric vehicles and renewable e…

On the Performance of Imputation Techniques for Missing Values on Healthcare Datasets Open

Luke Oluwaseye Joel, Wesley Doorsamy, Babu Sena Paul · 2024

Missing values or data is one popular characteristic of real-world datasets, especially healthcare data. This could be frustrating when using machine learning algorithms on such datasets, simply because most machine learning models perform…

Improving Academic Advising in Engineering Education with Machine Learning Using a Real-World Dataset Open

Mfowabo Maphosa, Wesley Doorsamy, Babu Paul · 2024

The role of academic advising has been conducted by faculty-student advisors, who often have many students to advise quickly, making the process ineffective. The selection of the incorrect qualification increases the risk of dropping out, …

Modelling of Low-Voltage Varistors’ Responses under Slow-Front Overvoltages Open

Lutendo Muremi, Pitshou N. Bokoro, Wesley Doorsamy · 2023

In this study, commercially low-voltage MOVs are exposed to switching surges to analyse and model the relationship between the number of surges and the MOV grain barrier height response. Repeated slow-front overvoltage transients are used …

Comparing South Africa’s Sustainability and Circular Economic Roadmap to The Rest of the World Open

Mohamed Sameer Hoosain, Babu Sena Paul, Wesley Doorsamy, Seeram Ramakrishna · 2023

The Influence of Circular Economy and 4IR Technologies on the Climate–Water–Energy–Food Nexus and the SDGs Open

Mohamed Sameer Hoosain, Babu Sena Paul, Wesley Doorsamy, Seeram Ramakrishna · 2023

The United Nations Member States created a common roadmap for sustainability and development in 2015. The UN-SDGs are included in the 2030 Plan as an immediate call to action from all nations in the form of global partnerships. To date, a …

Student Performance Patterns in Engineering at the University of Johannesburg: An Exploratory Data Analysis Open

Mfowabo Maphosa, Wesley Doorsamy, Babu Paul · 2023

Globally, the increased demand for engineers is not matched by an increase in graduates. This is further exacerbated by the fact that student dropout rates in engineering are higher than in other disciplines. Understanding engineering stud…

Supervisor perspectives in STEM PhD supervision: a social realist analysis of current trends Open

Alan S. Cornell, Wesley Doorsamy, Kershree Padayachee · 2022

The traditional academic pipeline has branched out significantly in recent years. The motivation of students pursuing higher degrees has also changed dramatically in response to wider socio-economic needs. Supervisors of PhD students are c…

Tomek Link and SMOTE Approaches for Machine Fault Classification with an Imbalanced Dataset Open

Elsie Fezeka Swana, Wesley Doorsamy, Pitshou N. Bokoro · 2022

Data-driven methods have prominently featured in the progressive research and development of modern condition monitoring systems for electrical machines. These methods have the advantage of simplicity when it comes to the implementation of…

Boosted decision trees in the era of new physics: a smuon analysis case study Open

Alan S. Cornell, Wesley Doorsamy, Benjamin Fuks, Gerhard Harmsen, L. H. Mason · 2022

Influence of Fermentation Conditions (Temperature and Time) on the Physicochemical Properties and Bacteria Microbiota of Amasi Open

Mpho Sebabiki Maleke, Wesley Doorsamy, Adrian Mark Abrahams, Martins Ajibade Adefisoye, Kedibone Masenya , et al. · 2022

The aim of this present study was to optimize the fermentation conditions (time and temperature) of amasi (a Southern African fermented dairy product) using response surface methodology (RSM), and to determine the physicochemical propertie…

A Comparative Study of Ensemble Models for Predicting Road Traffic Congestion Open

Tebogo Bokaba, Wesley Doorsamy, Babu Sena Paul · 2022

Increased road traffic congestion is due to different factors, such as population and economic growth, in different cities globally. On the other hand, many households afford personal vehicles, contributing to the high volume of cars. The …

Comparative Study of Machine Learning Classifiers for Modelling Road Traffic Accidents Open

Tebogo Bokaba, Wesley Doorsamy, Babu Sena Paul · 2022

Road traffic accidents (RTAs) are a major cause of injuries and fatalities worldwide. In recent years, there has been a growing global interest in analysing RTAs, specifically concerned with analysing and modelling accident data to better …

Development of a Stock Price Prediction Framework for Intelligent Media and Technical Analysis Open

Sibusiso T. Mndawe, Babu Sena Paul, Wesley Doorsamy · 2022

Equity traders are always looking for tools that will help them maximise returns and minimise risk, be it fundamental or technical analysis techniques. This research integrates tools used by equity traders and uses them together with machi…

On the Use of Machine Learning for Soil Condition Monitoring Open

Vikash Rameshar, Wesley Doorsamy, B. S. Paul · 2022

The sustainability of farming has come under tremendous pressure with growing demand, constrained resources, and climate change. Some of the key factors affecting large-scale farming and small-scale farming include soil fertility and maint…

A modeling method for the development of a bioprocess to optimally produce umqombothi (a South African traditional beer) Open

Edwin Hlangwani, Wesley Doorsamy, Janet Adeyinka Adebiyi, Lanrewaju Ibrahim Fajimi, Oluwafemi Ayodeji Adebo · 2021

Bioprocess development for umqombothi (a South African traditional beer) as with other traditional beer products can be complex. As a result, beverage bioprocess development is shifting towards new systematic protocols of experimentation. …

Predictive Maintenance Framework for Cathodic Protection Systems Using Data Analytics Open

Estelle Rossouw, Wesley Doorsamy · 2021

In the quest to achieve sustainable pipeline operations and improve pipeline safety, effective corrosion control and improved maintenance paradigms are required. For underground pipelines, external corrosion prevention mechanisms include e…

Processing, nutritional composition and microbiology of amasi: A Southern African fermented milk product Open

Mpho Sebabiki Maleke, Martins Ajibade Adefisoye, Wesley Doorsamy, Oluwafemi Ayodeji Adebo · 2021

An Unsupervised Learning Approach to Condition Assessment on a Wound-Rotor Induction Generator Open

Elsie Fezeka Swana, Wesley Doorsamy · 2021

Accurate online diagnosis of incipient faults and condition assessment on generators is especially challenging to automate through supervised learning techniques, because of data imbalance. Fault-condition training and test data are either…

Systematic Delineation of Media Polarity on COVID-19 Vaccines in Africa: Computational Linguistic Modeling Study Open

Sefater Gbashi, Oluwafemi Ayodeji Adebo, Wesley Doorsamy, Patrick Berka Njobeh · 2020

Background The global onset of COVID-19 has resulted in substantial public health and socioeconomic impacts. An immediate medical breakthrough is needed. However, parallel to the emergence of the COVID-19 pandemic is the proliferation of i…

Processing, Characteristics and Composition of Umqombothi (a South African Traditional Beer) Open

Edwin Hlangwani, Janet Adeyinka Adebiyi, Wesley Doorsamy, Oluwafemi Ayodeji Adebo · 2020

Traditional beers, such as palm wine, kombucha and others, are notable beverages consumed all over the globe. Such beverages historically contribute to food security on a global scale. Umqombothi is a South African traditional beer nutriti…

2020 International Conference on Intelligent Data Science Technologies and Applications (IDSTA) Open

Bhavani Thuraisingham, Khan Muhammad, Salma El Hajjami, Jamal Malki, Alain Bouju , et al. · 2020

Systematic Delineation of Media Polarity on COVID-19 Vaccines in Africa: Computational Linguistic Modeling Study (Preprint) Open

Sefater Gbashi, Oluwafemi Ayodeji Adebo, Wesley Doorsamy, Patrick Berka Njobeh · 2020

BACKGROUND The global onset of COVID-19 has resulted in substantial public health and socioeconomic impacts. An immediate medical breakthrough is needed. However, parallel to the emergence of the COVID-19 pandemic is the proliferation of …

Africa’s response to the COVID-19 pandemic: A review of the nature of the virus, impacts and implications for preparedness Open

Kingsley Badu, Jessica Thorn, Nowsheen Goonoo, Natisha Dukhi, Adeniyi Francis Fagbamigbe , et al. · 2020

Background: COVID-19 continues to wreak havoc in different countries across the world, claiming thousands of lives, increasing morbidity and disrupting lifestyles. The global scientific community is in urgent need of relevant evidence, to …

Review of water energy food nexus in Africa: Morocco and South Africa as case studies Open

Lahcen El Youssfi, Wesley Doorsamy, Adil Aghzar, Sidi Imad Cherkaoui, Ihssan Elouadi , et al. · 2020

The population of the African continent is significantly increasing which has given rise to societal, economic and environmental changes. This will generate an increase in demand for food, water and energy. Thus, strategies for sustainable…

Exploratory framework for analysing road traffic accident data with validation on Gauteng province data Open

Tebogo Makaba, Wesley Doorsamy, Babu Sena Paul · 2020

Exploratory data analysis (EDA) is often a necessary task in uncovering hidden patterns, detecting outliers, and identifying important variables and any anomalies in data. Furthermore, the approach can be used to gain insights by modelling…

Mapping Reliability Predictors of Low-Voltage Metal Oxide Surge Arresters Using Contour Plots Open

Pitshou N. Bokoro, Wesley Doorsamy · 2020

Reliability assessment of MOSA devices requires accurate estimation of life distribution parameters or reliability predictors. Estimated reliability predictors consist of reasonable indicators of failure probability and mean life trends as…

A Review of Recommender Systems for Choosing Elective Courses Open

Mfowabo Maphosa, Wesley Doorsamy, Babu Paul · 2020

In higher education, students face challenges when choosing elective courses in their study programmes. Most higher education institutions employ advisors to assist with this task. Recommender systems have their origins in commerce and are…

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