Zhang, Ke
(2017)
Urban mobility and location-based social networks: social, economic and environmental incentives.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
This is the latest version of this item.
Abstract
Location-based social networks (LBSNs) have recently attracted the interest of millions of users who can now not only connect and interact with their friends - as it also happens in traditional online social networks - but can also voluntarily share their whereabouts in real time. A location database is the backbone of a location-based social network and includes fine-grained semantic information for real-world places. The footprints captured in a location database represent the human socioeconomic activities and urban mobility at scale. LBSNs bridge the gap between the online and offline physical world, providing an unprecedented opportunity for researchers to access information that will allow them to place and understand human movements in the contexts of urban, social and economic activities.
In this dissertation, I design statistical analysis and modeling frameworks to examine how factors, including social interaction, economic incentives and local events, affect human movement across places in urban space. The dissertation first shows that people's visitation to local places exhibit significant levels of homophily, where peer influence can explain up to 40% of a geographically localized similarity between friends. We also find that the social selection mechanism is triggered by non-trivial similarity which is captured by places with specific network characteristics. Next, our quasi-experimental analysis reveals that online promotions in LBSNs are not as effective as anecdotal stories might suggest in attracting customers, and consequently in affecting the underlying city-dweller mobility. These results can have significant implications on advertisement strategies for local businesses. Finally, our developed framework is applied to assess the impact of local government decisions on urban mobility and economic activities, which can provide a blueprint for future educated policy making. The outcome of this dissertation is envisioned to help better understand human urban movements motivated by social, economic and external environmental factors and further foster applications in sociology, local economy and urban planning.
Share
| Citation/Export: |
|
| Social Networking: |
|
Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
|
| Date: |
20 January 2017 |
| Date Type: |
Publication |
| Defense Date: |
21 October 2016 |
| Approval Date: |
20 January 2017 |
| Submission Date: |
18 December 2016 |
| Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
| Number of Pages: |
144 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
School of Information Sciences > Telecommunications |
| Degree: |
PhD - Doctor of Philosophy |
| Thesis Type: |
Doctoral Dissertation |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
Urban Mobility; Location-based Social Networks; Statistical Modeling; Local Economy; Peer Influence; Quasi-Experimental Analysis |
| Date Deposited: |
20 Jan 2017 18:44 |
| Last Modified: |
20 Jan 2017 18:45 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/30634 |
Available Versions of this Item
-
Urban mobility and location-based social networks: social, economic and environmental incentives. (deposited 20 Jan 2017 18:44)
[Currently Displayed]
Metrics
Monthly Views for the past 3 years
Plum Analytics
Actions (login required)
 |
View Item |
![[feed]](/images/feed-icon-32x32.png){kind=icon}