Results 71 to 80 of about 4,589 (214)
Data trustworthiness and user reputation as indicators of VGI quality
Geo-spatial Information Science, 2018 Volunteered geographic information (VGI) has entered a phase where there are both a substantial amount of crowdsourced information available and a big interest in using it by organizations.
Paolo Fogliaroni +2 more
doaj +1 more source
Urban monitoring using NetKDE and VGI: network based kernel density estimation on volunteered geographic information applied to Baghdad, Iraq [PDF]
, 2011 This paper presents a methodology for urban monitoring using volunteered geographic information (VGI) and journalism data Iraq war logs with network based kernel density estimation (NetKDE).
Gasser, Loic +2 more
core +1 more source
Ecological Management &Restoration, Volume 26, Issue 2, May 2025.ABSTRACT Recreational trails, including informal trails created by visitors, have a range of ecological impacts, but mapping and assessing these impacts can be expensive and time‐consuming. It is increasingly possible to harness publicly available data posted by park visitors to fitness platforms and combine it with other spatial and field data to help
Isabella Smith +1 more
wiley +1 more source
Hydrology, 2023 The primary objective of this study was to examine the quality of volunteered geographic information (VGI) data for flood mapping of Hurricane Harvey. As a crowdsourcing platform, the U-Flood project mapped flooded streets in the Houston metro area. This research examines the following: (1) If there are any significant differences in water depth (WD ...
T. Edwin Chow +2 more
openaire +2 more sources
Advancing Science with VGI: Reproducibility and Replicability of Recent Studies using VGI [PDF]
, 2017 In scientific research, reproducibility and replicability are requirements to ensure the advancement of our body of knowledge. T his holds true also for VGI - related research and studies.
Cheong F +5 more
core +2 more sources
Transactions in GIS, Volume 29, Issue 3, May 2025.ABSTRACT Just as the language used to express them, concepts constantly evolve, due to changing cultural norms, scientific progress, or major events that (re)shape our understanding of the world. For example, as humans increasingly contribute to disasters, e.g., by altering the landscape, the line between natural and anthropogenic disasters blurs. This
Meilin Shi +5 more
wiley +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
doaj +1 more source
Extraction of Pluvial Flood Relevant Volunteered Geographic Information (VGI) by Deep Learning from User Generated Texts and Photos [PDF]
ISPRS International Journal of Geo-Information, 2018 In recent years, pluvial floods caused by extreme rainfall events have occurred frequently. Especially in urban areas, they lead to serious damages and endanger the citizens’ safety. Therefore, real-time information about such events is desirable.
Yu Feng, Monika Sester
openaire +2 more sources
Mapping Noise Pollution Using Modelled and Crowdsourced Urban Noise Data
New Zealand Geographer, Volume 81, Issue 1, Page 37-51, April 2025.ABSTRACT Transport‐generated noise pollution significantly burdens population health. Quantifying noise distribution and identifying areas with elevated noise levels is crucial for designing effective policy measures. We apply the CNOSSOS‐EU numerical transport noise model to Pōneke Wellington, mapping traffic‐induced noise exposure with good spatial ...
Allan Schori +2 more
wiley +1 more source
Rethinking GIScience Education in an Age of Disruptions
Transactions in GIS, Volume 29, Issue 2, April 2025.ABSTRACT GIS and GIScience education have continually evolved over the past three decades, responding to technological advances and societal issues. Today, the content and context in which GIScience is taught continue to be impacted by these disruptions, notably from technology through artificial intelligence (AI) and society through the myriad ...
Amy E. Frazier +26 more
wiley +1 more source