Results 41 to 50 of about 4,321 (173)

A characterization of Volunteered Geographic Information [PDF]

, 2010
This paper characterizes the Volunteered Geographic Information (VGI) phenomenon and explores comprehensively its relation with SDI. The SDI component view is used as common framework for describing the main characteristics of VGI and as framework for
Bregt, Arnold, Castelein, Watse, Crompvoets, Joep, Grus, Lukasz   +3 more
core   +6 more sources

Citizen-based sensing of crisis events: sensor web enablement for volunteered geographic information [PDF]

, 2011
Thanks to recent convergence of greater access to broadband connections, the availability of Global Positioning Systems in small packages at affordable prices and more participative forms of interaction on the Web (Web 2.0), vast numbers of individuals ...
Cox, Simon, De Longueville, Bertrand, Díaz Sánchez, Laura, Luraschi, Gianluca, Núñez Redó, Manuela, Ostermann, Frank, Schade, Sven, Spinsanti, Laura   +7 more
core   +1 more source

Assessing the Validity of OpenStreetMap for Food Environment Research

Geographical Analysis, Volume 57, Issue 4, Page 592-601, October 2025.
ABSTRACT This study assessed agreement between food environment measures derived from OpenStreetMap (OSM) data, a commercial dataset, and an administrative dataset (the Canadian Food Environment Dataset, Can‐FED) to better understand the suitability of OSM food‐related data for food environment research.
Guangping Chen, Andrew C. Stevenson, Lindsey G. Smith, Michael J. Widener   +3 more
wiley   +1 more source

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

Geographical Analysis, Volume 57, Issue 4, Page 758-772, October 2025.
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

VGI Quality [PDF]

, 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, Bastin, Lucy, Fonte, Cidália Costa, Foody, Giles, Minghini, Marco, See, Linda, Skopeliti, Andriani   +6 more
core  

Flood Damage Evaluation for Buildings in a Small Island Developing State

Water 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, Josephina Chang‐Ting, Shaun Williams   +2 more
wiley   +1 more source

Interoperable Search Mechanisms for Web 2.0 Resources [PDF]

, 2012
We are currently witnessing ordinary citizens willing to share geospatial information using friendly and easy-to use tools provided by Web 2.0 platforms. These platforms act as social networks describing events with large social impacts.
Aragó Galindo, Pau, Díaz Sánchez, Laura, Gil, José, González, David, Huerta, Joaquin, Núñez Redó, Manuela, Pultar, Edward   +6 more
core   +3 more sources

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

Transactions 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

A Survey of Volunteered Open Geo-Knowledge Bases in the Semantic Web

, 2013
Over the past decade, rapid advances in web technologies, coupled with innovative models of spatial data collection and consumption, have generated a robust growth in geo-referenced information, resulting in spatial information overload.
A. Ballatore, A. Buccella, A. Burton-Jones, A. Gangemi, A. Gore, A. Gómez-Pérez, A. Polleres, A. Schwering, A. Turner, B. Smith, C. Bizer, C. Jones, C. Keßler, C. Keßler, C. Manning, C.B. Jones, D. Buscaldi, D. Coleman, D. Nadeau, D. Strasunskas, D. Sui, F. Baader, F. Fonseca, F. Giunchiglia, F. Giunchiglia, F. Harvey, F.. Gey, F.J. Lopez-Pellicer, G. Bordogna, G. Fu, G. Tré De, G. Weikum, J. Giles, J. Goodwin, J. Howe, J. Leveling, K. Janowicz, K. Janowicz, L. Vaccari, L.L. Hill, M. Egenhofer, M. Goodchild, M. Goodchild, M. Grassi, M. Haklay, M. Haklay, M. Haklay, M. Kitsuregawa, M. Lutz, N. Choi, N. Guarino, N. Guarino, P. Burrough, P. Magnus, P. Roget, P. Singh, P.D. Smart, R. Fouad, R. Rada, S. Auer, S. Auer, S. Freitas, S. Hahmann, S. Overell, S. Schade, S. Staab, S. Vaid, S. Winter, T. Berners-Lee, T. Mandl, T. Mandl   +70 more
core   +1 more source

Mapping and the Citizen Sensor [PDF]

, 2017
The role of citizens in mapping has evolved considerably over the last decade. This chapter outlines the background to citizen sensing in mapping and sets the scene for the chapters that follow, which highlight some of the main outcomes of a ...
Antoniou, Vyron, Bastin, Lucy, Fonte, Cidália Costa, Foody, Giles, Fritz, Steffen, Liu, Hai-Ying, Minghini, Marco, Mooney, Peter, Olteanu-Raimond, Ana-Maria, See, Linda, Vatseva, Rumiana   +10 more
core   +1 more source