activity
20112017
most citedSentiment in New York City: A High Resolution Spatial and Temporal View

54 citations · 107 across the 7 of their papers we have counts for

collaborators

7 papers

cs.CV2017★ 17 cited

Mapping the world population one building at a time

Tobias G. Tiecke, Xianming Liu, Amy Zhang +8

High resolution datasets of population density which accurately map sparsely-distributed human populations do not exist at a global scale. Typically, population data is obtained us…

cs.CV2017★ 19 cited

Building Detection from Satellite Images on a Global Scale

Amy Zhang, Xianming Liu, Andreas Gros +1

In the last several years, remote sensing technology has opened up the possibility of performing large scale building detection from satellite imagery. Our work is some of the firs…

cs.CV2016★ 8 cited

Feedback Neural Network for Weakly Supervised Geo-Semantic Segmentation

Xianming Liu, Amy Zhang, Tobias Tiecke +2

Learning from weakly-supervised data is one of the main challenges in machine learning and computer vision, especially for tasks such as image semantic segmentation where labeling…

physics.soc-ph2013★ 54 cited

Sentiment in New York City: A High Resolution Spatial and Temporal View

Karla Z. Bertrand, Maya Bialik, Kawandeep Virdee +2

Measuring public sentiment is a key task for researchers and policymakers alike. The explosion of available social media data allows for a more time-sensitive and geographically sp…

physics.soc-ph2012★ 1 cited

Conflict in Yemen: From Ethnic Fighting to Food Riots

Andreas Gros, Alexander Gard-Murray, Yaneer Bar-Yam

Yemen is considered a global terrorist base for Al-Qaeda and in recent years rampant violence is threatening social order. Here we show that the socio-economic origins of violence…

physics.soc-ph2011★ 6 cited

Modeling Policy and Agricultural Decisions in Afghanistan

Michael J. Widener, Yavni Bar-Yam, Andreas Gros +2

Afghanistan is responsible for the majority of the world's supply of poppy crops, which are often used to produce illegal narcotics like heroin. This paper presents an agent-based…