@inproceedings{CSCW-2015-AbdullahMCC,
	author        = "Saeed Abdullah and Elizabeth L. Murnane and Jean M. R. Costa and Tanzeem Choudhury",
	booktitle     = "{Proceedings of the 18th ACM Conference on Computer Supported Cooperative Work & Social Computing}",
	doi           = "10.1145/2675133.2675186",
	isbn          = "978-1-4503-2922-4",
	pages         = "361--374",
	publisher     = "{ACM}",
	title         = "{Collective Smile: Measuring Societal Happiness from Geolocated Images}",
	year          = 2015,
}