Journal ArticleDOI
Assuring the quality of volunteered geographic information
Michael F. Goodchild,Linna Li +1 more
TLDR
The issues involved in the determination of quality for geospatial data, and the history of research on VGI quality are traced, as well as three approaches to quality assurance, which are described as crowd-sourcing, social, and geographic approaches respectively.Abstract:
Volunteered geographic information (VGI) is a phenomenon of recent years, offering an alternative mechanism for the acquisition and compilation of geographic information. As such it offers substantial advantages, but suffers from a general lack of quality assurance. We discuss the issues involved in the determination of quality for geospatial data, and trace the history of research on VGI quality. We describe three approaches to quality assurance, which we term the crowd-sourcing, social, and geographic approaches respectively. We discuss the advantages and limitations of each, and the research that will be needed to operationalize the geographic approach.read more
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Key issues and research priorities for public participation GIS (PPGIS): A synthesis based on empirical research
Greg Brown,Marketta Kyttä +1 more
TL;DR: In this paper, the authors present their views about the present and future of public participation GIS (PPGIS) for land use planning and management, and identify the key issues and research priorities in PPGIS.
Journal Article
Environment and Planning B: Planning and Design
Journal ArticleDOI
A review of volunteered geographic information quality assessment methods
TL;DR: Data mining is introduced as an additional approach for quality handling in VGI by reviewing various quality measures and indicators for selected types of VGI and existing quality assessment methods.
Journal ArticleDOI
A Comprehensive Framework for Intrinsic OpenStreetMap Quality Analysis
TL;DR: A framework containing more than 25 methods and indicators is presented, allowing arbitrarily repeatable intrinsic OSM quality analyses for any part of the world, based solely on the data's history.
Journal ArticleDOI
Crowdsourcing, citizen science or volunteered geographic information? The current state of crowdsourced geographic information
Linda See,Peter Mooney,Giles M. Foody,Lucy Bastin,Alexis Comber,Jacinto Estima,Steffen Fritz,Norman Kerle,Bin Jiang,Mari Laakso,Hai-Ying Liu,Grega Milčinski,Matej Nikšič,Marco Painho,Andrea Pődör,Ana-Maria Olteanu-Raimond,Martin Rutzinger +16 more
TL;DR: A snapshot of the role of citizens in crowdsourcing geographic information is provided and a guide to the current status of this rapidly emerging and evolving subject is provided.
References
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The Fractal Geometry of Nature
TL;DR: This book is a blend of erudition, popularization, and exposition, and the illustrations include many superb examples of computer graphics that are works of art in their own right.
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A Computer Movie Simulating Urban Growth in the Detroit Region
TL;DR: A Computer Movie Simulating Urban Growth in the Detroit Region as discussed by the authors was made to simulate urban growth in the city of Detroit, Michigan, United States of America, 1970, 1970.
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Erosional development of streams and their drainage basins; hydrophysical approach to quantitative morphology
TL;DR: The most important single factor involved in erosion phenomena and, in particular in connection with the development of stream systems and their drainage basins by aqueous erosion is called crossgrading.
Journal ArticleDOI
Citizens as sensors: the world of volunteered geography
TL;DR: In recent months, there has been an explosion of interest in using the Web to create, assemble, and disseminate geographic information provided voluntarily by individuals as mentioned in this paper, and the role of the amateur in geographic observation has been discussed.
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How Long Is the Coast of Britain? Statistical Self-Similarity and Fractional Dimension
TL;DR: Geographical curves are so involved in their detail that their lengths are often infinite or, rather, undefinable; however, many are statistically "selfsimilar," meaning that each portion can be considered a reduced-scale image of the whole.