Results 61 to 70 of about 4,402 (207)

Volunteered geographic information in natural hazard analysis : a systematic literature review of current approaches with a focus on preparedness and mitigation [PDF]

open access: yes, 2016
With the rise of new technologies, citizens can contribute to scientific research via Web 2.0 applications for collecting and distributing geospatial data.
Albuquerque, João Porto de   +4 more
core   +3 more sources

Geographically Weighted Cronbach's Alpha (GWalpha): An Exploratory Local Measure of Reliability for Scale Construction

open access: yesGeographical Analysis, EarlyView.
ABSTRACT Scales, as survey instruments, are crucial for investigating people's attitudes and behaviors in social science research. Cronbach's alpha is the most frequently used measure of internal consistency reliability for multi‐item survey scales. Affected by the spatial context of respondents' locations, the reliability of responses to a scale may ...
Sui Zhang, Ziqi Li
wiley   +1 more source

Unpacking the role of volunteered geographic information in disaster management: focus on data quality

open access: yesGeomatics, Natural Hazards & Risk
The increasing occurrence of disasters worldwide has motivated researchers to continuously evaluate potential technological advances to support disaster management (DM) as well as emergency response. The advent of Volunteered Geographic Information (VGI)
Marina Tavra   +3 more
doaj   +1 more source

Flood Damage Evaluation for Buildings in a Small Island Developing State

open access: yesWater Resources Research, Volume 61, Issue 9, September 2025.
Abstract Flooding poses significant social and economic challenges for Small Island Developing States (SIDS). Despite frequent and damaging flood events, SIDS are underrepresented among global flood damage models. This study evaluated tree‐based learning algorithm performance for building damage prediction, using a new data set from 2012 Tropical ...
Ryan Paulik   +2 more
wiley   +1 more source

Volunteered and crowdsourced geographic information: the OpenStreetMap project

open access: yesJournal of Spatial Information Science, 2020
Advancements in technology over the last two decades have changed how spatial data are created and used. In particular, in the last decade, volunteered geographic information (VGI), i.e., the crowdsourcing of geographic information, has revolutionized ...
Michela Bertolotto   +2 more
doaj   +1 more source

KINECT-BASED REAL-TIME RGB-D IMAGE FUSION METHOD [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
3D reconstruction of indoor environments based on vision has been developed vigorously. However, the algorithm's complexity and requirements of professional knowledge make it restricted in practical application.
W. Guo, T. Du, X. Zhu, T. Hu
doaj   +1 more source

VGI Quality [PDF]

open access: yes, 2016
The poster summarizes the research works on Volunteered Geographic Information (VGI) quality undertaken within the EU COST Actions TD1202 "Mapping and the Citizen Sensor" and IC1203 "European Network Exploring Research into Geospatial Information ...
Antoniou, Vyron   +6 more
core  

Leveraging User‐Generated Spatial Content for Urban Crime Analysis: A Data‐Driven Approach

open access: yesTransactions in GIS, Volume 29, Issue 5, August 2025.
ABSTRACT Street crimes in urban areas are influenced by the physical characteristics and built environment of a city, including road networks, visibility, lighting, and land use distribution. Traditionally, authorized data sources such as city maps have been used to investigate these urban form parameters. However, with advancements in technology, user‐
Mohammad Hadi Ahmadi, Mohammad Taleai
wiley   +1 more source

Data trustworthiness and user reputation as indicators of VGI quality

open access: yesGeo-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

Advancing Science with VGI: Reproducibility and Replicability of Recent Studies using VGI [PDF]

open access: yes, 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

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