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Browsing by Author "Shock, Jonathan"

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Active Inference in Multi-Objective Dynamic Environments

Author: Hodson, Rowan Date: 2022 Artificial Intelligence holds the promise of not only creating intelligent entities, but also unlocking the mysteries of our brains, and the nature of the subjective consciousness that accompanies them. Many paradigms of artificial intelligence ... Read more
Chaos and Scrambling in Quantum Small Worlds

Author: Hartmann, Jean-Gabriel Keiser Date: 2020 In this thesis, we introduce a novel class of many-body quantum system, which we term ‘quantum small worlds'. These are strongly-interacting systems that interpolate between completely ordered (nearest-neighbour, next-to-nearest-neighbour ... Read more
Computational analysis techniques using fast radio bursts to probe astrophysics

Author: Platts, Emma Date: 2021 This thesis focuses on Fast Radio Bursts (FRBs) and presents computational techniques that can be used to understand these enigmatic events and the Universe around them. Chapter 1 provides a theoretical overview of FRBs; providing a foundation ... Read more
Computational Psychiatry - Neuropsychological Bayesian reinforcement learning

Author: Wolpe, Zach Date: 2022 Cognitive science draws inspiration from a myriad of disciplines, and has become increasingly reliant on computational methods. In particular, theories of learning, operant conditioning and decision making have shown a natural synergy with ... Read more
Entanglement entropy, the Ryu-Takayanagi prescription, and conformal maps

Author: Grant-Stuart, Alastair Date: 2017 We define and explore the concepts underpinning the Ryu-Takayanagi prescription for entanglement entropy in a holographic theory. We begin by constructing entanglement entropy in finite-dimensional quantum systems, and defining the boundary ... Read more
Evaluating transformers as memory systems in reinforcement learning

Author: Makkink, Thomas Date: 2021 Memory is an important component of effective learning systems and is crucial in non-Markovian as well as partially observable environments. In recent years, Long Short-Term Memory (LSTM) networks have been the dominant mechanism for providing ... Read more
Evaluation of Plasmodium falciparum gametocyte detection in different patient material

Author: Kast, Katharina ; Berens-Riha, Nicole ; Zeynudin, Ahmed ; Abduselam, Nuredin ; Eshetu, Teferi ; Loscher, Thomas ; Wieser, Andreas ; Shock, Jonathan ; Pritsch, Michael Date: 2013 BACKGROUND:For future eradication strategies of malaria it is important to control the transmission of gametocytes from humans to the anopheline vector which causes the spread of the disease. Sensitive, non-invasive methods to detect gametocytes ... Read more c b
Introduction to Complex Numbers

Author: Mokhithi, Mashudu ; Shock, Jonathan Date: Apr 2020 This is an introduction to the mathematics of complex numbers, starting from the very basics of their definitions, up to proving theorems for polynomials. The text covers everything required of most first-year mathematics courses on complex ... Read more c b
Learning to Coordinate Efficiently through Multiagent Soft Q-Learning in the presence of Game-Theoretic Pathologies

Author: Danisa, Siphelele Date: 2022 In this work we investigate the convergence of multiagent soft Q-learning in continuous games where learning is most likely to be affected by relative overgeneralisation. While this will occur more often in multiagent independent learner ... Read more
MAM1000W Calculus Notes

Author: Shock, Jonathan Date: Oct 2013 This resource was developed to be used as self study notes for first-year university mathematics students. The examples and questions contained in this resource ensure gradual growth in depth and understanding of mathematical concepts, and ... Read more c b n
Modeling population dynamics of rhino-poacher interaction across South Africa and the Kruger National Park using ordinary differential equations

Author: Makic, Vladimir Date: 2020 In this thesis, a system of ordinary differential equations (ODES) is presented to model the population dynamics between poachers and rhino as a predator-prey system in both South Africa (SA) and the Kruger National Park (KNP). The data used ... Read more
Quantum states on spheres in the presence of magnetic fields

Author: Slayen, Ruach Pillay Date: 2019 The study of quantum states on the surface of various two-dimensional geometries in the presence of strong magnetic fields has proven vital to the theoretical understanding of the quantum Hall effect. In particular, Haldane’s seminal study ... Read more
Saliency Mapping in Convolutional Neural Networks to Determine Brain Age Trajectories

Author: Taylor, Daniel Date: 2022 Brain Age (BA) estimation via Deep Learning has become a strong and reliable bio-marker for brain health, but the black-box nature of Neural Networks does not easily allow insight into the causal features of brain ageing. In this work, a ... Read more