Also via Zoom at:https://unc.zoom.us/j/97719686596?pwd=dUZlcExqandkQ2FXOVlxSzNCMGVuQT09 Meeting ID: 977 1968 6596 Passcode: 627362 Title: Three Models for Pricing Decisions in Services or under Inventory Considerations Abstract: This dissertation studies pricing decisions under three different service settings. First, we consider a service … Read more
Title: A Framework for Interpretable Causal Inference with PK/PD Models with Applications to Seizure-like Activity Abstract: Evaluating treatment for critically-ill patients is an extremely challenging task: treatment decisions are high-stakes, clinical trials may be difficult to arrange, observational datasets can … Read more
Title: Market Microstructure: from equilibria to VAR models Abstract: Market microstructure as a branch of financial economics plays a crucial role in studying the price formation process in the security market. In this dissertation, we build an integrated market microstructure … Read more
Title: Echelon Forms and Reformulations of Pathological Semidefinite Programs Abstract: This thesis seeks to better understand when and why various well-known pathologies arise in semidefinite programs (SDP). The first part of this thesis is concerned with the pathology of … Read more
Ph.D. Thesis Defense Public Presentation Thursday May 5, 2022 10:00 AM Location: Hanes 125 Wei Liu Data-driven aircraft assignment and stochastic models for service systems Under the direction of Vidyadhar Kulkarni and Vinayak Deshpande This dissertation consists of two parts: … Read more
Ph.D. Thesis Defense Public Presentation Friday, June 10, 2022 10:00 AM Location: Zoom Deyi Liu Advised by Quoc Tran-Dinh Efficient and Provable Algorithms for Convex Optimization Problems Beyond Lipschitz Continuous Gradients We aim to develop efficient algorithms for solving complex and … Read more
Ph.D. Thesis Defense Public Presentation Monday June 13, 2022, 10:00 AM Location: Zoom Haodong Wang Advised by Yufeng Liu and Quefeng Li Supervised learning for complex data Supervised learning problems are commonly seen in a wide range of scientific fields such … Read more
Yiyun Luo Online Decision Making in Dynamic Pricing and Assortment Selection Under the direction of Yufeng Liu Online decision making is an interdisciplinary research field which lies at the interface of Statistics, Machine Learning, and Operations Research. … Read more
Learning Individualized Treatment Rules with Sequential and Multi-Outcome Data Under the direction of Yufeng Liu and Donglin Zeng Learning optimal individualized treatment rules (ITRs) has become increasingly important in the modern era of precision medicine. In this dissertation, … Read more
Community Dynamic Factor Models: Correlation Networks, Clustering Guarantees and Vector Autoregressions Network-based techniques for high-dimensional time series data have gained popularity due to their success in various fields, such as neuroscience and econometrics. These methods treat component time series … Read more
Modeling Multiple-Subject and Discrete-Valued High-Dimensional Time Series This thesis focuses on two separate topics in modeling of high-dimensional time series (HDTS) with several structures and their various applications. The first topic is on modeling HDTS from multiple subjects. Here, … Read more
Binary Expansion Testing and Gait Force Analysis The Cancer Genome Atlas (TCGA) gene expression data are very complex, reflecting many types of relationships between genes. Here we study pairs of genes and investigate potentially interesting nonlinear dependencies some of which … Read more
