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Browsing by Author "Marivate, Vukosi N"

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Bringing sequential feature explanations to life

Author: Mokoena, Tshepiso ; Lebogo, Ofentse ; Dlaba, Asive ; Marivate, Vukosi N Date: Sep 2017 In many real world applications, human analysts are not only interested in the detected anomalies but are also interested in the reasons behind why they were flagged as anomalous. However, existing anomaly detectors provide the analysts with ... Read more
Catching crime: detection of public safety incidents using social media

Author: Marivate, Vukosi N ; Moiloa, P Date: Nov 2016 The increasing prevalence of Social Media platform use has brought with it an explosion of new user generated public data. This data is centered around many, diverse topics. One theme of interest is how one can tap into the public safety and ... Read more
Employment relations: A data driven analysis of job markets using online job boards and online professional networks

Author: Marivate, Vukosi N ; Moorosi, Nyalleng Date: Aug 2017 Data from online job boards and online professional networks present an opportunity to understand job markets as well as how professionals transition from one job/career to another. We propose a data driven approach to begin to understand a ... Read more
Exploring data science for public good in South Africa: evaluating factors that lead to success

Author: Marivate, Vukosi N ; Moorosi, Nyalleng Date: May 2018 In the pursuit of public service, governments have to oversee many complex systems. In recent years, data-driven methodologies have been adopted as tools to oversee and enhance service delivery. In this paper we discuss some of the ways that ... Read more
Exploring data science for public good in South Africa: evaluating factors that lead to success

Author: Marivate, Vukosi N ; Moorosi, Nyalleng Date: May 2018 In the pursuit of public service, governments have to oversee many complex systems. In recent years, data-driven methodologies have been adopted as tools to oversee and enhance service delivery. In this paper we discuss some of the ways that ... Read more
Extracting South African safety and security incident patterns from social media

Author: Marivate, Vukosi N Date: Nov 2015 The use of social media data to gain insights into public phenomena is a potentially powerful tool. We present the use of social media data analysis, connected with crime and public safety incidents, to better understand reoccurring topics ... Read more
Investigating an approach for low resource language dataset creation, curation and classification: Setswana and Sepedi

Author: Marivate, Vukosi N ; Sefara, Tshephisho J ; Chabalala, V ; Makhaya, K ; Mokgonyane, T ; Mokoena, R ; Modupe, A Date: May 2020 The recent advances in Natural Language Processing have only been a boon for well represented languages, negating research in lesser known global languages. This is in part due to the availability of curated data and research resources. One ... Read more
Pathways for mainstreaming resilience thinking into climate change adaptation and planning in the city of Cape Town

Author: Snyman-Van der Walt, Luanita ; Schreiner, Gregory O ; Laurie, Suriana ; Audouin, Michelle A ; Lochner, Paul A ; Marivate, Vukosi N ; Pasquini, L ; Davidson, A ; Hadingham, T ; Cameron, R Date: Oct 2020 Between 2015 and 2017, the City of Cape Town in the Western Cape Province of South Africa experienced three lower than average rainfall years. A changing climate has altered the rainfall patterns in the Western Cape, shifting most of Cape ... Read more
Semi-supervised probabilistics approach for normalising informal short text messages

Author: Modupe, A ; Celik, T ; Marivate, Vukosi N ; Diale, Melvin Date: Mar 2017 The growing use of informal social text messages on Twitter is one of the known sources of big data. These type of messages are noisy and frequently rife with acronyms, slangs, grammatical errors and non-standard words causing grief for natural ... Read more
Topic modelling of news articles for two consecutive elections in South Africa

Author: Moodley, Avashlin ; Marivate, Vukosi N Date: Nov 2019 In election cycles, the political-themed articles published by news providers present a rich source of information about election discourse. Extracting useful themes from a large article corpus manually is infeasible, text mining techniques ... Read more
Unsupervised learning for robust bitcoin fraud detection

Author: Monamo, Patrick ; Marivate, Vukosi N ; Twala, B Date: Aug 2016 The rampant absorption of Bitcoin as a cryptographic currency, along with rising cybercrime activities, warrants utilization of anomaly detection to identify potential fraud. Anomaly detection plays a pivotal role in data mining since most ... Read more

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Browsing by Author "Marivate, Vukosi N"

Browsing by Author "Marivate, Vukosi N"

Browse

All of ResearchSpace

Quick Links

Legislation and compliance

General Enquiries

Social Connect