Results 21 to 30 of about 2,365 (174)
VGI and crowdsourced data credibility analysis using spam email detection techniques
International Journal of Digital Earth, 2018 Volunteered geographic information (VGI) can be considered a subset of crowdsourced data (CSD) and its popularity has recently increased in a number of application areas.
Saman Koswatte +2 more
exaly +2 more sources
International Journal of Digital EarthSocial interactions among online community members contributing to volunteered geographic information (VGI) are a key element and often crucial to VGI project success.
Guiming Zhang, Xi Gong
exaly +3 more sources
OpenStreetMap – building data completeness visualization in terms of “Fitness for purpose” [PDF]
Advances in Geodesy and Geoinformation, 2023 The purpose of this article was to provide the user with information about the number of buildings in the analyzed OpenStreetMap (OSM) dataset in the form of data completeness indicators, namely the standard OSM building areal completeness index (C Index)
Sylwia Borkowska +2 more
doaj +1 more source
A Risk-Based Approach for Enhancing the Fitness of Use of VGI
IEEE Access, 2022 Volunteered Geographic Information (VGI) phenomena offer an alternative or supplement to the authoritative mechanism of geospatial data acquisition. It allows people without professional geospatial skills or knowledge to participate in the geospatial ...
Tarek Sboui, Saida Aissi
doaj +1 more source
ISPRS International Journal of Geo-Information, 2021 One of the most important challenges of volunteered geographic information (VGI) is the quality assessment. Existing methods of VGI quality assessment, either assess the quality by comparing a reference map with the VGI map or deriving the quality from ...
Sepehr Honarparvar +3 more
doaj +1 more source
Advancing Science with VGI: Reproducibility and Replicability of Recent Studies using VGI [PDF]
Transactions in GIS, 2016 AbstractIn scientific research, reproducibility and replicability are requirements to ensure the advancement of our body of knowledge. This holds true also for VGI‐related research and studies. However, the characteristics of VGI suggest particular difficulties in ensuring reproducibility and replicability.
Frank O. Ostermann, Carlos Granell
openaire +2 more sources
Big Earth Data, 2021 The applications of 3D building models are limited as producing them requires massive labor and time costs as well as expensive devices. In this paper, we aim to propose a novel and web-based interactive platform, VGI3D, to overcome these challenges. The
Hongchao Fan, Gefei Kong, Chaoquan Zhang
doaj +1 more source
Geo-spatial Information Science, 2023 Geographical studies of outdoor activities have increased in recent years with the rise in popularity of these activities worldwide, including in Japan. Volunteered geographic information (VGI) is a key tool for organizing outdoor activities as it offers
Jun Yamashita +3 more
doaj +1 more source
A VGI Quality Assessment Method for VGI based on Trustworthiness [PDF]
GI_Forum, 2016 Recent advances in technology have greatly transformed how geographic information is produced and have led to the phenomenon of Volunteered Geographic Information (VGI). VGI allows people with little geographical knowledge to contribute in the creation of maps and other kinds of geographic information.
Amir Masoud Forati, Farid Karimipour
openaire +1 more source
ISPRS International Journal of Geo-Information, 2020 Greece is one of the few European countries that has not yet a fully operating Cadastre at national coverage. Cadastral surveying and property registration have been completed only for about 8% of the Greek territory, which includes about 18% of the ...
George Mourafetis, Chryssy Potsiou
doaj +1 more source