Browsing Computer Science by Title
Now showing items 155-174 of 1551
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A Bias-Variance-Privacy Trilemma for Statistical Estimation
(University of Waterloo, 2023-08-28)The canonical algorithm for differentially private mean estimation is to first clip the samples to a bounded range and then add noise to their empirical mean. Clipping controls the sensitivity and, hence, the variance of ... -
Bidirectional Learning in Recurrent Neural Networks Using Equilibrium Propagation
(University of Waterloo, 2018-09-26)Neurobiologically-plausible learning algorithms for recurrent neural networks that can perform supervised learning are a neglected area of study. Equilibrium propagation is a recent synthesis of several ideas in biological ... -
Biological Plausibility in Modern Hopfield Networks
(University of Waterloo, 2022-12-19)Modern Hopfield Networks (HNs) have the ability to store a large number of target memories (e.g. binary patterns) and then recall a memory in its entirety when prompted by a sub-set or perturbed version of it; in this ... -
Biologically Inspired Adaptive Control of Quadcopter Flight
(University of Waterloo, 2015-08-20)This thesis explores the application of a biologically inspired adaptive controller to quadcopter flight control. This begins with an introduction to modelling the dynamics of a quadcopter, followed by an overview of control ... -
Biologically inspired methods in speech recognition and synthesis: closing the loop
(University of Waterloo, 2016-02-18)Current state-of-the-art approaches to computational speech recognition and synthesis are based on statistical analyses of extremely large data sets. It is currently unknown how these methods relate to the methods that ... -
Biologically Plausible Neural Learning using Symmetric Predictive Estimators
(University of Waterloo, 2016-08-04)A predictive estimator (PE) is a neural microcircuit hypothesized to explain how the brain processes certain types of information. They participate in a hierarchy, passing predictions to lower layers, which send back ... -
Biologically Plausible, Human-scale Knowledge Representation
(University of Waterloo, 2014-08-22)Several approaches to implementing symbol-like representations in neurally plausible models have been proposed. These approaches include binding through synchrony, mesh binding, and tensor product binding. Recent theoretical ... -
BioSpec: A Biophysically-Based Spectral Model of Light Interaction with Human Skin
(University of Waterloo, 2005)Despite the notable progress in physically-based rendering, there is still a long way to go before we can automatically generate predictable images of biological materials. In this thesis, we address an open problem in ... -
Bitemporal Sliding Windows
(University of Waterloo, 2014-04-29)The bitemporal data model associates two time intervals with each record - system time and application time - denoting the validity of the record from the perspective of the database and of the real world, respectively. ... -
BotChase: Graph-Based Bot Detection Using Machine Learning
(University of Waterloo, 2019-05-21)Bot detection using machine learning (ML), with network flow-level features, has been extensively studied in the literature. However, existing flow-based approaches typically incur a high computational overhead and do not ... -
Bounds on Maximum Matchings in 1-Planar Graphs
(University of Waterloo, 2019-01-29)In this thesis, we study lower bounds on maximum matchings in 1-planar graphs. We expand upon the tools used for proofs of matching bounds in other classes of graphs as well as some original ideas in order to find these ... -
BridgeSPA: A Single Packet Authorization System for Tor Bridges
(University of Waterloo, 2012-01-10)Tor is a network designed for low-latency anonymous communications. Tor clients form circuits through relays that are listed in a public directory, and then relay their encrypted traffic through these circuits. This ... -
Bridging Technical Spaces: Model Translation from TA to XMI and Back Again
(University of Waterloo, 2006)There are many different techniques and notations for extracting architecturally interesting information from the source code of existing software systems. This process is known as reverse engineering. One current ... -
BSML-mbeddr: Integrating Semantically Congurable State-Machine Models in a C Programming Environment
(ACM, 2016-11)In model-driven engineering, developers express their solutions in domain-specific modelling languages (DSLs) that support domain-specific abstractions. Big-Step Modelling Languages (BSML) is a family of extended state-machine ... -
Building a Better Tor Experimentation Platform from the Magic of Dynamic ELFs
(University of Waterloo, 2017-10-30)Tor is the most popular tool for providing online anonymity. It is used by journalists, activists, and privacy-conscious individuals to provide low-latency private access to the Internet. However, Tor’s specific design and ... -
Building a Framework for High-performance In-memory Message-Oriented Middleware
(University of Waterloo, 2019-11-28)Message-Oriented Middleware (MOM) is a popular class of software used in many distributed applications, ranging from business systems and social networks to gaming and streaming media services. As workloads continue to ... -
Building a larger class of graphs for efficient reconfiguration of vertex colouring
(University of Waterloo, 2020-05-13)A $k$-colouring of a graph $G$ is an assignment of at most $k$ colours to the vertices of $G$ so that adjacent vertices are assigned different colours. The reconfiguration graph of the $k$-colourings, $\mathcal{R}_k(G)$, ... -
Building Efficient Software to Support Content Delivery Services
(University of Waterloo, 2019-08-28)Many content delivery services use key components such as web servers, databases, and key-value stores to serve content over the Internet. These services, and their component systems, face unique modern challenges. Services ... -
Bulk Scattering Approximations for Collimated Light Transmitted through Paper
(University of Waterloo, 2009-01-21)Paper is a complex fibrous material whose production involves substantial amounts of natural and industrial resources. To reduce its manufacturing costs, the pulp and paper industry often employs optical technology such ... -
Business Policy Modeling and Enforcement in Relational Database Systems
(University of Waterloo, 2014-05-12)Database systems maintain integrity of the stored information by ensuring that modifications to the database comply with constraints designed by the administrators. As the number of users and applications sharing a common ...