Results 21 to 30 of about 66,181 (265)

Developing a Workflow to Identify Inconsistencies in Volunteered Geographic Information: A Phenological Case Study. [PDF]

open access: yesPLoS ONE, 2015
Recent improvements in online information communication and mobile location-aware technologies have led to the production of large volumes of volunteered geographic information. Widespread, large-scale efforts by volunteers to collect data can inform and
Hamed Mehdipoor   +4 more
doaj   +1 more source

Accurate attribute mapping from volunteered geographic information: issues of volunteer quantity and quality [PDF]

open access: yes, 2015
Crowdsourcing is a popular means of acquiring data, but the use of such data is limited by concerns with its quality. This is evident within cartography and geographical sciences more generally, with the quality of volunteered geographic information (VGI)
Boyd, D.S.   +7 more
core   +2 more sources

Estimating Traffic Disruption Patterns with Volunteered Geographic Information [PDF]

open access: yesScientific Reports, 2018
AbstractAccurate understanding and forecasting of traffic is a key contemporary problem for policymakers. Road networks are increasingly congested, yet traffic data is often expensive to obtain, making informed policy-making harder. This paper explores the extent to which traffic disruption can be estimated using features from the volunteered ...
Camargo, CQ   +4 more
openaire   +7 more sources

Maps, volunteered geographic information (VGI) and the spatio-discursive construction of nature

open access: yesDigital Geography and Society, 2022
This paper interrogates the role that spatial media such as maps and Volunteered Geographic Information (VGI) play in the construction and mobilisation of representations of nature.
Juan Astaburuaga   +3 more
doaj   +1 more source

Evacuation time estimate for a total pedestrian evacuation using queuing network model and volunteered geographic information [PDF]

open access: yes, 2015
Estimating city evacuation time is a non-trivial problem due to the interaction between thousands of individual agents, giving rise to various collective phenomena, such as bottleneck formation, intermittent flow and stop-and-go waves.
Johansson, Anders   +2 more
core   +3 more sources

Recent Developments and Future Trends in Volunteered Geographic Information Research: The Case of OpenStreetMap [PDF]

open access: yes, 2014
User-generated content (UGC) platforms on the Internet have experienced a steep increase in data contributions in recent years. The ubiquitous usage of location-enabled devices, such as smartphones, allows contributors to share their geographic ...
Anderson   +27 more
core   +1 more source

Volunteered Geographic Information

open access: yes, 2020
Volunteered geographic information (VGI) is spatial data that are gathered and shared by individuals to derive information about the world. VGI has largely been embraced due to the pervasiveness of mobile devices and affordances offered by the locational sensors that are housed within them.
openaire   +1 more source

Mining volunteered geographic information for predictive energy data analytics

open access: yesEnergy Informatics, 2018
Background Users create serious amounts of Volunteered Geographic Information (VGI) in Online platforms like OpenStreetMap or in real estate portals. Harvesting such data with the help of business analytics and machine learning methods yield promising ...
Konstantin Hopf
doaj   +1 more source

Public Perception of Urban Air Quality Using Volunteered Geographic Information Services

open access: yesUrban Planning, 2020
Investigating perceived air quality (AQ) in urban areas is a rather new topic of interest. Papers presenting results from studies on perception of AQ have thus far focused on the individual characteristics leading to a certain AQ perception or have ...
Sonja Grossberndt   +6 more
doaj   +1 more source

VOLUNTEER GEOGRAPHIC INFORMATION IN AFRICA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Abstract. During the past few years much effort has been put into developing community-based methods to capture and analyze a large amount of data in a systematic manner. This new source of geo-referenced data could be very important throughout Africa where crowd sourcing activities or volunteered geographic information (VGI) enhance participation and ...
openaire   +3 more sources

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