Doctoral Defense – Manqi Li

Candidate: Manqi Li

Doctor of Philosophy in Earth System and Geoinformation Sciences

Department of Geography and Geoinformation Science

Date:   Monday, April 29th, 2019

Time:   11:00 AM – 1:00 PM

Place:  Exploratory Hall 2304

 

TITLE: SPATIOTEMPORAL ANALYSIS OF INFORMATION DIFFUSION IN ONLINE SOCIAL NETWORKS

Committee:

Dissertation Director: Dr. Arie Croitoru

Committee Members: Dr. Anthony Stefanidis, Dr. Andrew Crooks, and Dr. Ruixin Yang

ABSTRACT

Understanding the dynamics of information diffusion in social networks contributes to a wide range of social studies. Among social networks, online social networks have drawn growing interest due to their richness, availability, and popularity nowadays. Such networks, which are often embedded in geographical space, have enabled information to spread at a relatively lower cost and higher speed and reach compared to traditional ways of communication. This dissertation aims at exploring the spatiotemporal patterns of information diffusion in discussion about real-world events in online social networks, with special interest in geographical characteristics and representation. Specifically, this dissertation presents a methodology for studying and analyzing information diffusion in geographic space between sources and sinks of information. By doing so it highlights the information diffusion mechanisms that are in play at the intersection of the cyber and geographical environment, which can provide additional insights for higher-level decisions making.