"A Functional Optimization Approach to Stochastic Process Sampling" by Ryan Matthew Thurman

Graduation Year

2022

Document Type

Dissertation

Degree

Ph.D.

Degree Name

Doctor of Philosophy (Ph.D.)

Degree Granting Department

Mathematics and Statistics

Major Professor

Razvan Teodorescu, Ph.D.

Co-Major Professor

Iuliana Teodorescu, Ph.D.

Committee Member

Andrei Barbos, Ph.D.

Committee Member

Dmytro Savchuk, Ph.D.

Committee Member

Sherwin Kouchekian, Ph.D.

Keywords

Bayesian Estimation, Dynamic Linear Models, Large Deviations Theory, Non-Stationarity, Optimal Sampling, Probability

Abstract

The goal of the current research project is the formulation of a method for the estimation and modeling of additive stochastic processes with both linear- and cycle-type trend components as well as a relatively robust noise component in the form of Levy processes. Most of the research in stochastic processes tends to focus on cases where the process is stationary, a condition that cannot be assumed for the model above due to the presence of the cyclical sub-component in the overall additive process. As such, we outline a number of relevant theoretical and applied topics, such as stochastic processes and their decomposition into sub-components, linear modeling techniques, optimal sampling, harmonizable processes, dynamic linear models, Bayesian estimation and modeling, as well as non-parametric inference, all en route to the final chapter where we formulate a protocol for the estimation of this model among the theories of large deviation functionals, optimization, and Bayesian inference.

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