Crowdsourcing geographic knowledge: volunteered geographic information (VGI) in theory and practice.

David L. Tulloch

Published in: Int. J. Geogr. Inf. Sci. (2014)

Keyphrases

geographic information
geographic data
metadata
geographic location
geographic locations
web documents
spatial data
geographic information retrieval
google earth
database
data mining
video sequences
user interface
multi dimensional
spatial information
geographic information systems