[PDF][PDF] Assessing VGI data quality

CC Fonte, V Antoniou, L Bastin, J Estima… - Map** and the …, 2017 - ubiquitypress.com
Uncertainty over the data quality of Volunteered Geographic Information (VGI) is the largest
barrier to the use of this data source by National Map** Agencies (NMAs) and other …

Defining fitness-for-use for crowdsourced points of interest (POI)

D Jonietz, A Zipf - ISPRS International Journal of Geo-Information, 2016 - mdpi.com
(1) Background: Due to the advent of Volunteered Geographic Information (VGI), large
datasets of user-generated Points of Interest (POI) are now available. As with all VGI …

Combining environmental-socio-economic data with volunteer geographic information for map** flood risk zones in Zhengzhou, Henan Province, China

H Luo, J Liao, G Shen - International Journal of Disaster Risk Reduction, 2024 - Elsevier
Due to the occurrence of extreme weather phenomena, flooding caused by precipitation has
become a frequent, widespread, and highly destructive natural disaster. For densely …

[HTML][HTML] The value of OpenStreetMap historical contributions as a source of sampling data for multi-temporal land use/cover maps

CM Viana, L Encalada, J Rocha - ISPRS International Journal of Geo …, 2019 - mdpi.com
OpenStreetMap (OSM) is a free, open-access Volunteered geographic information (VGI)
platform that has been widely used over the last decade as a source for Land Use Land …

Is the radial distance really a distance? An analysis of its properties and interest for the matching of polygon features

Y Méneroux, I Maidaneh Abdi… - International Journal …, 2023 - Taylor & Francis
In this paper, we examine the properties of the radial distance which has been used as a
tool to compare the shape of simple surfacic objects. We give a rigorous definition of the …

[HTML][HTML] On data quality assurance and conflation entanglement in crowdsourcing for environmental studies

DG Leibovici, JF Rosser, C Hodges, B Evans… - … International Journal of …, 2017 - mdpi.com
Volunteer geographical information (VGI), either in the context of citizen science or the
mining of social media, has proven to be useful in various domains including natural …

[HTML][HTML] Crowdsourced geospatial infrastructure for coastal management and planning for emerging post COVID-19 tourism demand

E Bakogiannis, C Potsiou, K Apostolopoulos… - Tourism and …, 2021 - mdpi.com
In recent years, the use of crowdsourcing has positively transformed the way geographic
information is collected, stored and analyzed. Many countries have promoted and funded …

[HTML][HTML] CWDAT—an open-source tool for the visualization and analysis of community-generated water quality data

A Gray, C Robertson, R Feick - ISPRS International Journal of Geo …, 2021 - mdpi.com
Citizen science initiatives span a wide range of topics, designs, and research needs.
Despite this heterogeneity, there are several common barriers to the uptake and …

New age of crisis management with social media

AG Gulnerman, H Karaman, A Basiri - … for Urban Studies: The Value of …, 2020 - Springer
Abstract Social Media (SM) Volunteered Geographic Information (VGI) is gradually being
used for representing the real-time situation during emergency. This chapter presents the …

[HTML][HTML] User generated spatial content-integrator: conceptual model to integrate data from diverse sources of user generated spatial content

J Estima, M Painho - ISPRS International Journal of Geo-Information, 2016 - mdpi.com
Geographic information has been traditionally produced by map** agencies and
corporations, using highly skilled professionals as well as expensive precision equipment …