Ph.D student in Information Science, UC Berkeley, Berkeley, Current

M.S. in Cartology and GIS, Peking University, Beijing, 2015

B.S. in GIS, East China Normal University, Shanghai, 2012


Facebook, via Pro Unlimited, 2017.1 -

Data scientist, part-time

Core Data Science, Facebook, 2018.5 - 2018.8

Data scientist intern

IFC, World Bank, 2016.6 - 2017.5

Project: Extending the machine learning algorithms for poverty prediction

Big Data Lab, Baidu, 2015.3 - 2015.7

Project: Ghost Cities in China

Le Pont des Arts (Shanghai) Ltd. 2011.10 - 2012.4

Project: Visualize real-time location of buses

My Research

I have an interdisciplinary training background including geographic information science, computer science, and social network. My research topics include social network analysis, human mobility, computational social science, and social media.

In the news...

MIT Technology Review: Data Mining Reveals the Extent of China's Ghost Cities

Was elected as Best of 2015 by MIT Technology Review

The Washington Post: How smartphones are solving one of China’s biggest mysteries

The Wall Street Journal: Some "Ghost Cities" in China Are Seasonal, Study Says

NPR: We Know China Has Ghost Cities, But Where Are They Hiding?

Forbes: What China Is Doing About Its 450 Million Square Meters Of Unsold Housing

QUARTZ: Baidu found China’s “ghost cities,” but it is keeping their locations mostly a secret

The Christian Science Monitor: China's tech giant Baidu used customer data to track country's 'ghost cities'

Gizmodo: No One Really Knew How Many Ghost Cities Existed in China... Until Now

MotherBoard: Meet the Data Scientist Revealing How Big China's 'Ghost Cities' Really Are

New Scientist: How technology reveals the ghost cities in China and the West

New China: Big data dig up China’s “ghost cities”

Vagabond Journey: Response to Peking University/ Baidu Ghost City Study

PRICENOMICS: Surveying the Ghost Cities of China

参考消息: 智能手机解开中国谜题:哪些城市是真正的“鬼城”

环球时报: 外媒:百度大数据揭示何为真正的“鬼城”

参考消息: 百度一项研究被《麻省理工科技评论》评为年度十佳

My Publications (My Google Scholar)

Chi, Guanghua, Yu Liu, Li Shi, Yong Gao. "Understanding the effects of administrative boundary in sampling spatially embedded networks". Physica A. (2016).[download]

Chi, Guanghua, Zhengwei Wu, Yu Liu, Haishan Wu. "Ghost cities analysis based on positioning data in China." arXiv (2015).[download]

Chi, Guanghua, Jean-Claude Thill, Daoqin Tong, Li Shi, and Yu Liu. "Uncovering regional characteristics from mobile phone data: A network science approach." Papers in Regional Science (2014).[download]

Liu, Yu, Xi Liu, Song Gao, Li Gong, Chaogui Kang, Ye Zhi, Guanghua Chi, and Li Shi. "Social Sensing: A New Approach to Understanding Our Socioeconomic Environments." Annals of the Association of American Geographers (2015): 1-19.[download]

Shi, Li, Guanghua Chi, Xi Liu, and Yu Liu. "Human mobility patterns in different communities: a mobile phone data-based social network approach." Annals of GIS 21, no. 1 (2015): 15-26.[download]

Shi, Li, Lun Wu, Guanghua Chi, Yu Liu. "Geographical Impacts on Social Networks from Perspectives of Space and Place: An Empirical Study Using Mobile Phone Data". Journal of Geographical Systems. 2016 [download]

Chen, Xinxiang, Guanghua Chi, Guangqing Chi. "Do Airports Boost Economic Development by Attracting Talent? An Empirical Investigation at the Sub-county Level". Social Science Quarterly. 2017 [download]

My Projects

Papers Using Mobile Phone Data

Many researches are based on mobile phone data. Where are these mobile phone data?

"Ghost cities" in China

What is the real situation of "ghost cities" in China?


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