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Essays on spillover effects in digital media
(Massachusetts Institute of Technology, 2020)
In this thesis, I address spillover effects in digital media across 3 different essays. In Chapter 1, I focus on estimating social spillovers in the consumption of online news. Exploiting regional rainfall as a natural ...
Real-Time Calibration of Large-Scale Traffic Simulators: Achieving Efficiency Through the Use of Analytical Mode
(Massachusetts Institute of Technology, 2020)
Stochastic traffic simulators are widely used in the transportation community to model real-world urban road networks in applications ranging from real-time congestion routing and control to traffic state prediction. Online ...
Past price and trend effects in promotion planning; from prediction to prescription
(Massachusetts Institute of Technology, 2020)
Sales promotions are a popular type of marketing strategy. When undertaking a sales promotion, products are promoted using short-term price reductions to stimulate their demand and increase their sales. These sales promotions ...
Interdependent diffusion : the social contagion of interacting beliefs
(Massachusetts Institute of Technology, 2020)
A common simplifying assumption in theories of social contagion is that ideas or beliefs spread from person to person in a social network without regard to other ideas or beliefs that spread concurrently. This assumption ...
Essays on the counterintuitive consequences of labor policies in service industries
(Massachusetts Institute of Technology, 2020)
In essays one and two, I examine how unstable schedules affect financial performance. In essay one, using 52 weeks of data from over 1,000 stores and more than 15,000 employees of a specialty retailer, I estimate the effect ...
Essays on the evaluation of novel ideas
(Massachusetts Institute of Technology, 2020)
In this dissertation, I examine the evaluation of novel ideas in two essays. In the first, I, along with Hong Luo and Jeffrey Macher, study a novel, low-cost approach to aggregating judgment from a large number of industry ...
Essays in financial economics
(Massachusetts Institute of Technology, 2020)
In Chapter 1, I document that there is a high correlation between the returns of cryptocurrencies and those of utility tokens, which are claims to products and services yet to be developed that are issued through ICOs and ...
New optimization approaches to matrix factorization problems with connections to natural language processing
(Massachusetts Institute of Technology, 2020)
In this thesis, we propose novel formulation optimization methods for four matrix factorization problems in depth: sparse principal component analysis, compressed sensing, discrete component analysis, and latent Dirichlet ...
Essays on the very invisible college : global science and African participation
(Massachusetts Institute of Technology, 2020)
Despite globalization, innovative activities remain concentrated in a handful of high-income countries. Leveraging knowledge and resources in these locations through ties in the global network presents opportunities for ...
From data to decisions in urban transit and logistics
(Massachusetts Institute of Technology, 2020)
Urban transit and city logistics have undergone major changes in recent years, including increased peak congestion, shrinking mass transit ridership, and the introduction of ride-sharing and micro-mobility platforms. At ...