301 citations · 639 across the 8 of their papers we have counts for
8 papers
Global Tweet Mentions of COVID-19
Guangqing Chi, Junjun Yin, M. Luke Smith +1
Background. After a year and half and over 4 million deaths, the COVID-19 pandemic continues to be widespread, and its related topics continue to dominate the global media. Althoug…
Characterizing People's Daily Activity Patterns in the Urban Environment: A Mobility Network Approach with Geographic Context-Aware Twitter Data
Junjun Yin, Guangqing Chi
People's daily activities in the urban environment are complex and vary by individuals. Existing studies using mobile phone data revealed distinct and recurrent transitional activi…
Depicting urban boundaries from a mobility network of spatial interactions: A case study of Great Britain with geo-located Twitter data
Junjun Yin, Aiman Soliman, Dandong Yin +1
Existing urban boundaries are usually defined by government agencies for administrative, economic, and political purposes. Defining urban boundaries that consider socio-economic re…
Spatial Distribution of City Tweets and Their Densities
Bin Jiang, Ding Ma, Junjun Yin +1
Social media outlets such as Twitter constitute valuable data sources for understanding human activities in the virtual world from a geographic perspective. This paper examines spa…
Where Chicagoans tweet the most: Semantic analysis of preferential return locations of Twitter users
Aiman Soliman, Junjun Yin, Kiumars Soltani +2
Recent studies on human mobility show that human movements are not random and tend to be clustered. In this connection, the movements of Twitter users captured by geo-located tweet…
Zipf's Law for All the Natural Cities around the World
Bin Jiang, Junjun Yin, Qingling Liu
Two fundamental issues surrounding research on Zipf's law regarding city sizes are whether and why this law holds. This paper does not deal with the latter issue with respect to wh…