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On improving the forecast accuracy of the hidden Markov model
Published 2017“…The forecast accuracy of a hidden Markov model (HMM) may be low due first, to the measure of forecast accuracy being ignored in the parameterestimation method and, second, to overfitting caused by the large number of parameters that must be estimated. …”
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Trolle-Schwartz HJM interest rate model
Published 2017“…The Trolle and Schwartz (2009) interest rate model prices interest rate derivatives in a generalised stochastic volatility framework. …”
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Plant identification using model reference techniques
Published 2017Subjects: “…Mathematical models…”
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A comparative study of stochastic models in biology
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Constitutive modelling of the skin accounting for chronological ageing
Published 2017“…The constitutive model is implemented within a finite element scheme. …”
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Gleason solutions and canonical models for row contractions
Published 2017“…This thesis extends the deBranges-Rovnyak model for completely non-coisometric (CNC) contractions to the setting of row contractions from several copies of a Hilbert space into itself. …”
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Bayesian model selection with applications to radio astronomy
Published 2018“…In the first part, the idea is to create a supermodel by combining two models using a hyperparameter, which we call α. Setting α = 0 or 1 switches each of the models off. …”
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Innovating the funding models for transport megaprojects in Kenya
Published 2018Subjects: “…funding models…”
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Implementation of Bivariate Unspanned Stochastic Volatility Models
Published 2019“…Unspanned stochastic volatility term structure models have gained popularity in the literature. This dissertation focuses on the challenges of implementing the simplest case – bivariate unspanned stochastic volatility models, where there is one state variable controlling the term structure, and one scaling the volatility. …”
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Modelling uncertainty of cost and time in infrastructure projects
Published 2020“…The developed hybrid tool models the main structures from the activity level to the entire highway project. …”
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Pricing with Bivariate Unspanned Stochastic Volatility Models
Published 2020“…Unspanned stochastic volatility (USV) models have gained popularity in the literature. USV models contain at least one source of volatility-related risk that cannot be hedged with bonds, referred to as the unspanned volatility factor(s). …”
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A comparative study of stochastic models in biology
Published 2020“…These models are not only effective as a description tool but also afford strategies consistent with conventional model selection processes to deal with the standard statistical hypothesis testing situations. …”
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Articulated Statistical Shape Modelling of the Shoulder Joint
Published 2020“…The aim of this project was to develop an analysis framework for shoulder joint kinematics via the use of articulated statistical shape models (ASSMs). Articulated statistical shape models extend conventional statistical shape models by combining the shape variability of anatomical objects collected from different subjects (statistical shape models), with the physical variation of pose between the same objects (articulation). …”
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Efficient Bayesian analysis of spatial occupancy models
Published 2020Subjects: “…Occupancy Modelling…”
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Local Stochastic Volatility—The Hyp-Hyp Model
Published 2021“…Stochastic volatility models are mainly used to capture the curvature of a volatility smile while local volatility models generally model the skew. …”
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Interpolation of Forward Rates in the LIBOR Market Model
Published 2021“…Since its development in 1997, the LIBOR market model has gained widespread use in interest rate modelling, largely owing to its consistency with the Black futures formula for pricing interest rate caps and floors. …”
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Volatility level dependence and the CEV market model
Published 2021“…This varying volatility level-dependence feature motivates the use of CEV market model to model the interest rate. In this dissertation, we compare the lognormal forward LIBOR market model, the CEV market model and the normal market model through regression analysis, hedging analysis and calibration analysis to assess their performance. …”
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Quantitative models for prudential credit risk management
Published 2021“…We explore how the EMV model can be used in origination modelling, impairment analysis, capital analysis, stress-testing and in the assessment of economic value. …”
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Quantitative Models for Prudential Credit Risk Management
Published 2021“…We explore how the EMV model can be used in origination modelling, impairment analysis, capital analysis, stress-testing and in the assessment of economic value. …”
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A model for an urban structure on the Cape Flats
Published 2022“…The method by which this study is carried out is by means of a model for an urban structure, as a basis for a satisfactory framework for human settlement. …”
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