Results 51 to 60 of about 19,531 (263)
A Systems Perspective on Volunteered Geographic Information
ISPRS International Journal of Geo-Information, 2014 Volunteered geographic information (VGI) is geographic information collected by way of crowdsourcing. However, the distinction between VGI as an information product and the processes that create VGI is blurred.
Victoria Fast, Claus Rinner
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Energies, 2021 Recently, the use of electric vehicles in a power grid has been attracting attention. The success of vehicle-grid integration (VGI) requires the active participation of not only VGI service providers but also electric vehicle owners, utility companies ...
Yongma Moon +4 more
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Segmentation based traversing-agent approach for road width extraction from satellite images using volunteered geographic information [PDF]
Applied Computing and Informatics, 2021 We make use of the Volunteered Geographic Information (VGI) data to extract the total extent of the roads using remote sensing images. VGI data is often provided only as vector data represented by lines and not as full extent.
Prajowal Manandhar +2 more
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Genomic variations associated with attenuation in Mycobacterium avium subsp paratuberculosis vaccine strains [PDF]
, 2013 BACKGROUND: Mycobacterium avium subspecies paratuberculosis (MAP) whole cell vaccines have been widely used tools in the control of Johne's disease in animals despite being unable to provide complete protection. Current vaccine strains derive from stocks
Bull, TJ +7 more
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RegNet: a neural network model for predicting regional desirability with VGI data
International Journal of Geographical Information Science, 2021 Volunteered geographic information can be used to predict regional desirability. A common challenge regarding previous works is that intuitive empirical models, which are inaccurate and bring in perceptual bias, are traditionally used to predict regional
W. Shi +3 more
semanticscholar +1 more source
A Volunteered Geographic Information Framework to Enable Bottom-Up Disaster Management Platforms
ISPRS International Journal of Geo-Information, 2015 Recent disasters, such as the 2010 Haiti earthquake, have drawn attention to the potential role of citizens as active information producers. By using location-aware devices such as smartphones to collect geographic information in the form of geo-tagged ...
Mohammad Ebrahim Poorazizi +2 more
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Ranking of VGI contributor reputation using an evaluation‐based weighted pagerank
Trans. GIS, 2021 The quality of volunteered geographic information (VGI) is questionable as it emerges through a diversity of contributors. The reputation of a contributor is increasingly applied to VGI quality assessment and its assurance. Research on how to measure and
Die Zhang +3 more
semanticscholar +1 more source
Enhancing VGI application semantics by accounting for spatial bias
Big Earth Data, 2019 Volunteered geographic information (VGI) is becoming an important source of geospatial big data that support many applications. The application semantics of VGI, i.e.
Guiming Zhang
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VGI BASED URBAN PUBLIC TRANSPORT [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013 Abstract. Recent advances in information technology have made geographic information system (GIS) a powerful and affordable tool for planning and decision making in various fields such as the public transportation. These technologies such as the social network (e.g.
F. Teymurian +3 more
openaire +4 more sources
Qualidade do Posicionamento em Aplicativos VGI Obtido por Sensores de Localização em Smartphones
Revista Brasileira de Cartografia, 2019 O artigo apresenta a avaliação da qualidade do posicionamento obtido por sensores de localização acoplados em smartphones, abordando o seu desempenho para a coleta de Informações Geográficas Voluntárias (VGI). Os experimentos foram realizados na forma de
Gabriel Araujo Oliveira +3 more
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