Browsing Research Articles (Computer Science) by Title

Browsing Research Articles (Computer Science) by Title

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  • Particle swarm optimization : understanding order-2 stability guarantees 
    Cleghorn, Christopher Wesley (Springer, 2019-03)
    This paper’s primary aim is to provide clarity on which guarantees about particle stability can actually be made. The particle swarm optimization algorithm has undergone a considerable amount of theoretical analysis. ...
  • Particle swarm optimization with crossover : a review and empirical analysis 
    Engelbrecht, Andries P. (Springer, 2016-02)
    Since its inception in 1995, many improvements to the original particle swarm optimization (PSO) algorithm have been developed. This paper reviews one class of such PSO variations, i.e. PSO algorithms that make use of ...
  • Particle swarm stability : a theoretical extension using the non-stagnate distribution assumption 
    Cleghorn, Christopher Wesley; Engelbrecht, Andries P. (Springer, 2018-03)
    This paper presents an extension of the state of the art theoretical model utilized for understanding the stability criteria of the particles in particle swarm optimization algorithms. Conditions for order-1 and order-2 ...
  • Particle swarm variants : standardized convergence analysis 
    Cleghorn, Christopher Wesley; Engelbrecht, Andries P. (Springer, 2015-09)
    This paper presents an objective function specially designed for the convergence analysis of a number of particle swarm optimization (PSO) variants. It was found that using a specially designed objective function for ...
  • Perceptions of virtual globes, volunteered geographical information and spatial data infrastructures 
    Cooper, Antony Kyle; Coetzee, Serena Martha; Kourie, Derrick G. (Canadian Institute of Geomatics, 2010)
    The Internet has spawned the development of virtual communities or virtual social networks which generate and share information with one another, and with the public at large. Volunteered geographical information (VGI) ...
  • Performance costs of cryptography in securing new-generation Internet of Energy endpoint devices 
    Ledwaba, Lehlogonolo P.I.; Hancke, Gerhard P.; Venter, H.S. (Hein); Isaac, Sherrin J. (Institute of Electrical and Electronics Engineers, 2018)
    In past years, cryptography has been considered a dif cult task to achieve on sensor nodes for the Internet of Energy (IoE) owing to the resource-constrained nature of 8- and 16-bit microcontroller units (MCUs). Previous ...
  • Performance measures for dynamic multi-objective optimisation algorithms 
    Helbig, Marde; Engelbrecht, Andries P. (Elsevier, 2013)
    When algorithms solve dynamic multi-objective optimisation problems (DMOOPs), performance measures are required to quantify the performance of the algorithm and to compare one algorithm’s performance against that of other ...
  • Performance measures for dynamic multi-objective optimisation algorithms 
    Helbig, Marde; Engelbrecht, Andries P. (Elsevier, 2013)
    When algorithms solve dynamic multi-objective optimisation problems (DMOOPs), performance measures are required to quantify the performance of the algorithm and to compare one algorithm’s performance against that of other ...
  • Photovoice as a critical reflection methodology for a service learning module 
    Jordaan, Martina; Pieterse, Vreda (Higher Education South Africa, 2020-07)
    The article examines the value of using photovoice to assist reflection in a service learning module. Students were required to complete a reflective assignment in order to facilitate critical reflection on experiences ...
  • A polar coordinate particle swarm optimiser 
    Matthysen, Wiehann; Engelbrecht, Andries P. (Elsevier, 2011-01)
    The Particle Swarm Optimisation (PSO) algorithm consists of a population (or swarm) of particles that are “flown” through an n-dimensional space in search of a global best solution to an optimisation problem. PSO operates ...
  • Polychronicity tendency-based online behavioral signature 
    Ikuesan, Adeyemi Richard; Razak, Shukor Abd; Venter, H.S. (Hein); Salleh, Salleh M. (Springer, 2019-08)
    The proliferation of ubiquitous and pervasive computing devices has led to the emergence of research areas like Internet of things, and the Big-Data, which has seen a rise in obfuscation of online identity thus fueling an ...
  • Polynomial filtering : to any degree on irregularly sampled data 
    Reyneke, Pieter V.; Morrison, Norman; Kourie, Derrick G.; De Ridder, Corne (KoREMA - Croatian Society for Communications, Computing, Electronics, Measurement and Control, 2012)
    Conventionally, polynomial filters are derived for evenly spaced points. Here, a derivation of polynomial filters for irregularly spaced points is provided and illustrated by example. The filter weights and variance ...
  • Problems for a philosophy of software engineering 
    Gruner, Stefan (Springer, 2011-05)
    On the basis of an earlier contribution to the philosophy of computer science [Ede2007] this essay discusses to what extent the ‘paradigms’ of computer science from [Ede2007] are also applicable to software engineering, ...
  • Quality in software development : a pragmatic approach using metrics 
    Acton, Daniel; Kourie, Derrick G.; Watson, Bruce William (Computer Society of South Africa, 2014-07)
    As long as software has been produced, there have been e orts to strive for quality in software products. In order to understand quality in software products, researchers have built models of software quality that rely ...
  • Refactoring with ordered collections of fine-grain transformations 
    Saadeh, Emmad I.M.; Kourie, Derrick G. (World Scientific, 2013)
    The objective of this paper is to explain the notion of fine-grain transformations (FGTs), showing how they can be used as prototypical building blocks for constructing refactorings of a design-level system description. ...
  • Reference architecture for android applications to support the detection of manipulated evidence 
    Pieterse, H.; Olivier, Martin S.; Van Heerden, R.P. (South African Institute of Electrical Engineers, 2016-06)
    Traces found on Android smartphones form a significant part of digital investigations. A key component of these traces is the date and time, often formed as timestamps. These timestamps allow the examiner to relate the ...
  • Reference model for a data grid approach to address data in a dynamic SDI 
    Coetzee, Serena Martha (Springer, 2012-01)
    A grid is concerned with the integration, virtualization, and management of services and resources in a distributed, heterogeneous environment that supports virtual organizations across traditional administrative and ...
  • Results from a normative dependency analysis of geographic information standards 
    Coetzee, Serena Martha (Elsevier, 2011-09)
    Standardization in the field of geographic information started in the 1990s when geographic information systems (GIS) matured and the advent of the Internet accelerated the exchange of information. Recent developments, ...
  • A review and comparative study of cancer detection using machine learning : SBERT and SimCSE application 
    Mokoatle, Mpho; Marivate, Vukosi; Mapiye, Darlington; Bornman, Maria S. (Riana); Hayes, Vanessa M. (BMC, 2023-03-23)
    BACKGROUND : Using visual, biological, and electronic health records data as the sole input source, pretrained convolutional neural networks and conventional machine learning methods have been heavily employed for the ...
  • A roadmap for rural area ICT solution deployment : a case of Kgautswane community in South Africa 
    Ngassam, Ernest Ketcha; Ntawanga, Felix; Eloff, Jan H.P. (International Center for Information Technology and Development, 2013-04)
    The need to introduce technologies in rural areas so as to capacitate communities towards overcoming various socio-economic challenges remains a priority in emerging economies. We rely on the foregoing for the investigation ...