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Sepehr Honarparvar, Mohammad Reza Malek, Sara Saeedi and Steve Liang
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 t...
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Dimitra Zacharopoulou, Andriani Skopeliti and Byron Nakos
Volunteered Geographic Information (VGI) is a widely used data source in various fields and services, such as environmental monitoring, disaster and crisis management, SDI, and mapping. Quality is a critical factor for the usability of VGI. This study fo...
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Gloria Bordogna
The paper analyses the characteristics of Volunteer Geographic Information (VGI) and the need to assure and assess its quality for a possible use and re-use. Ontologies and soft ontologies are presented as means to support quality assurance and assessmen...
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Mohammad H. Vahidnia and Hossein Vahidi
Over the past few decades, geoportals have been considered as the key technological solutions for easy access to Earth observation (EO) products, and the implementation of spatial data infrastructure (SDI). However, less attention has been paid to develo...
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Amerah Alghanim, Musfira Jilani, Michela Bertolotto and Gavin McArdle
Volunteered Geographic Information (VGI) is often collected by non-expert users. This raises concerns about the quality and veracity of such data. There has been much effort to understand and quantify the quality of VGI. Extrinsic measures which compare ...
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Nan Cui, Nick Malleson, Victoria Houlden and Alexis Comber
Volunteered Geographical Information (VGI) and social media can provide information about real-time perceptions, attitudes and behaviours in urban green space (UGS). This paper reviews the use of VGI and social media data in research examining UGS. The c...
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Shivam Gupta, Edzer Pebesma, Auriol Degbelo and Ana Cristina Costa
Air quality has had a significant impact on public health, the environment and eventually on the economy of countries for decades. Effectively mitigating air pollution in urban areas necessitates accurate air quality exposure information. Recent advancem...
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