Browsing Mathematics (Faculty of) by Title
Now showing items 318-337 of 2993
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Cardinality Estimation in Streaming Graph Data Management Systems
(University of Waterloo, 2024-02-23)Graph processing has become an increasingly popular paradigm for data management systems. Concurrently, there is a pronounced demand for specialized systems dedicated to streaming processing that are essential to address ... -
Carrot Or Stick? Modelling How Landowner Behavioural Responses Can Cause Incentive-Based Forest Governance To Backfire
(Public Library of Science, 2013-10-30)Mitigating the negative impacts of declining worldwide forest cover remains a significant socio-ecological challenge, due to the dominant role of human decision-making. Here we use a Markov chain model of land-use dynamics ... -
Case Studies of a Machine Learning Process for Improving the Accuracy of Static Analysis Tools
(University of Waterloo, 2016-10-18)Static analysis tools analyze source code and report suspected problems as warnings to the user. The use of these tools is a key feature of most modern software development processes; however, the tools tend to generate ... -
A Case Study of a Very Large Organization
(University of Waterloo, 2012-01-04)Very Large Organization (VLO) is an organization that produces hardware and software, which together form products. VLO granted access to data pertaining to seven different products and their development projects. One ... -
Case Study of Feature-Oriented Requirements Modelling, Applied to an Online Trading System
(University of Waterloo, 2011-01-12)The Feature-Oriented Requirements Modelling (FORM) combines the requirement engineering style structuring of requirements documents with the feature-orientation of the Feature Oriented Software Development, resulting in a ... -
Caterpillars in Erdős–Hajnal
(Elsevier, 2019-05)Let T be a tree such that all its vertices of degree more than two lie on one path; that is, T is a caterpillar subdivision. We prove that there exists ε > 0 such that for every graph G with |V(G)| ≥ 2 not containing T as ... -
Causal Inference and Matrix Completion with Correlated Incomplete Data
(University of Waterloo, 2023-01-19)Missing data problems are frequently encountered in biomedical research, social sciences, and environmental studies. When data are missing completely at random, a complete-case analysis may be the easiest approach. However, ... -
Causal Inference with Covariate Balance Optimization
(University of Waterloo, 2018-12-04)Causal inference is a popular problem in biostatistics, economics, and health science studies. The goal of this thesis is to develop new methods for the estimation of causal effects using propensity scores or inverse ... -
Causal Inference with Measurement Error
(University of Waterloo, 2018-05-04)Causal inference methods have been widely used in biomedical sciences and social sciences, among many others. With different assumptions, various methods have been proposed to conduct causal inference with interpretable ... -
Causal Inference with Recurrent Data via Propensity Score Methods
(University of Waterloo, 2019-01-07)Propensity score methods are increasingly being used to reduce estimation bias of treatment effects for observational studies. Previous research has shown that propensity score methods consistently estimate the marginal ... -
Causal Sensitivity Analysis for Decision Trees
(University of Waterloo, 2015-01-15)Ventilator assignments in the pediatric intensive care unit (PICU) are made by medical experts; however, for some patients the relationship between ventilator assignment and patient health status is not well understood. ... -
CBKR+: A Conceptual Framework for Improving Corpus Based Knowledge Representation
(University of Waterloo, 2006)In Corpus Based Knowledge Representation [CBKR], limited association capability, that is, no criteria in place to extract substantial associations in the corpus, and lack of support for hypothesis testing and prediction ... -
Cell Path Reconstruction Using 3D Digital Inpainting
(University of Waterloo, 2013-08-06)Digital inpainting is the reconstruction of a missing or damaged region in a digital image. Intensity values in the missing region are approximated using information near the boundary of the region. Some applications include ... -
A cell-centred finite volume method for the Poisson problem on non-graded quadtrees with second order accurate gradients
(Elsevier, 2017-02-15)This paper introduces a two-dimensional cell-centred finite volume discretization of the Poisson problem on adaptive Cartesian quadtree grids which exhibits second order accuracy in both "the solution and its gradients, ... -
Cerebrospinal Fluid Pulsations and Aging Effects in Mathematical Models of Hydrocephalus
(University of Waterloo, 2010-08-20)In this Thesis we develop mathematical models to analyze two proposed causative mechanisms for the ventricular expansion observed in hydrocephalus: cerebrospinal fluid pulsations and small transmantle pressure gradients. To ... -
CGU: A common graph utility for DL Reasoning and Conjunctive Query Optimization
(University of Waterloo, 2005)We consider the overlap between reasoning involved in <em>conjunctive query optimization</em> (CQO) and in tableaux-based approaches to reasoning about subsumption in <em>description logics</em> (DLs). In both cases, an ... -
Challenges in epidemiological modelling: from socio-virulence dynamics to HIV interventions in MSM populations.
(University of Waterloo, 2020-09-28)The spread of infectious diseases is one of the biggest challenges that public health faces nowadays. Their control is often not an easy task. Social behaviour plays an important role in disease prevention. However, the ... -
Change Point Analysis in Piecewise Polynomial Signals Using Trend Filtering
(University of Waterloo, 2021-09-27)Change point analysis, an active area of research in many fields, including statistics, has attracted a lot of attention in recent years. The focus of this thesis is change point detection, where the purpose is to estimate ... -
Character Polynomials and Lagrange Inversion
(University of Waterloo, 2005)In this thesis, we investigate two expressions for symmetric group characters: Kerov?s universal character polynomials and Stanley?s character polynomials. We give a new explicit form for Kerov?s polynomials, which ... -
Characteristics of quasistationary near-wall turbulence subjected to strong stable stratification in open-channel flows
(American Physical Society, 2020-06-05)Characteristics of near-wall turbulence at quasistationarity under strong wall cooling are studied using direct numerical simulation of open-channel flow. It is shown that if turbulence reaches quasistationarity, then the ...