Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Statistical Science"”.
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A Random-Linear-Extension Test Based on Classic Nonparametric Procedures
… which was introduced by Geyer and Meeden in Statistical Science in 2005. A special case is to compare two groups when only two objects can be compared at a time. Three matching schemes, random matching, ordered matching and reverse matching are introduced and compared between each other. The …
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Factors influencing employees’ retention in public and private sector work organizations in Tanzania’
… and qualitatively using Software Package for Statistical Science (SPSS) version 16.0. The study findings revealed that there is a high rate of turnover in Tanzania work organizations. However, the study findings indicate that those who stayed in the same organization were from public …
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Factors influencing Employee Retention in Tanzanian’s non-Governmental sectors. A case study of Ifakara Health Institute
… and qualitatively using Software Package for Statistical Science (SPSS) version 16.0. The study findings revealed that there is a high rate of turnover in non-Governmental Organization in Tanzania. The study also revealed that, low salaries and benefits were the main reasons for employees …
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A review-aware multi-modal neural collaborative filtering recommender system
Online shopping has become a ubiquitous aspect of modern life and recommender systems have become a crucial tool for e-commerce giants to efficiently sift through vast amounts of data to locate the infor mation that users are seeking. Within e-commerce, recommender systems aim to provide users with …
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Modelling hepatotoxicity in HIV/TB co-infected patients: extensions of the Cox Proportional Hazards Model
… risk factors associated with hepatotoxicity. The statistical objectives are to fit a Cox regression model, the resolution model of hepatotoxicity, and the extended Cox models for recurring events, including the Andersen Gill (AG) model, the Shared frailty model, the Prentice, Williams and Peterson …
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Modelling first innings totals in T20 cricket: applications in the Indian Premier League
In the game of cricket, teams batting first are faced with the question of how many runs are enough. This paper proposes a solution to this in the context of the Indian Premier League (IPL). The aim is to build a model that will allow teams to determine what scores they would need to score for any …
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Resource constraints in an epidemic: a goal programming and mathematical modelling framework for optimal resource shifting in South Africa
The COVID-19 pandemic has had devastating consequences across the globe, and has led many governments into completely new decision making territory. Developing models which are capable of producing realistic projections of disease spread under extreme uncertainty has been paramount for supporting …
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Longitudinal latent class and joint modelling of antiretroviral adherence
… living with HIV in South Africa using advanced statistical modeling techniques. Utilizing data from the ADD-ART study, a prospective cohort of 238 adults on ART in Cape Town, the research employs survival analysis, joint modeling, and longitudinal latent class analysis to compare di↵erent …
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Towards answering unanswerable questions: data augmentation for enhanced medical domain question answering
Hospitals store patient information in relational databases known as Electronic Health Records (EHRs). Exist ing EHRs have filter and search options on the front end that are converted to SQL queries at the back end. However, these search and filter options become cumbersome when querying the EHR. …
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Application of CNN-gcForestCS to cassava leaf image classification
… confidence screening) presents an alternative statistical learning method that can be trained using CPU, and requires less complex hyperparameter tuning than deep learning while producing competitive performance for lower-dimensionality datasets. Taking advantage of the feature extraction …
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Analysis of the effect of course structure and pattern of usage on the efficacy of online/blended courses
Using the Sakai Learning Management System (LMS), this dissertation investigates the structure of course sites in blended and online courses at the University of Cape Town. Then, it evaluates the student interactions that this facilitates. The data selected focused on undergraduate courses in 2019. …
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Exploring regionalization techniques: Simulation and application in ecology
… applications within the literature, and the statistical and computational methods underlying their operation. Cluster optimization indices are used to determine how many clusters are best for a certain set of data and a given regionalization algorithm. Chapter 3 applies these algorithms and …
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Statistical aspects of elastic scattering spectroscopy with applications to cancer diagnosis
… precancerous changes. This thesis focuses on the statistical issue on how to eliminate irrelevant variations in the high-dimensional ESS spectra and extract the most useful information to enable the classification of tissue as normal or abnormal. Multivariate statistical methods have been used to …
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Nonparametric Methods for Analysis and Modeling of Complex Multivariate Distributions
<p>Modern statistical science is challenged by data sets that grow rapidly in both size and complexity. These data sets are very often multivariate, including, for instance, continuous and categorical variables. In addition, such data may encode information about multiple data-generative …