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VISUALIZATION OF VGI DATA THROUGH THE NEW NASA WEB WORLD WIND VIRTUAL GLOBE
Data Collection NASA World Wind Free and Open Source Software Volunteered Geographic Information Virtual Globes Web Crowdsourcing
2016/11/8
GeoWeb 2.0, laying the foundations of Volunteered Geographic Information (VGI) systems, has led to platforms where users can contribute to the geographic knowledge that is open to access. Moreover, as...
IMPREMENTATION OF VGI-BASED GEOPORTAL FOR EMPOWERING CITIZEN’S GEOSPATIAL OBSERVATORIES RELATED TO URBAN DISASTER MANAGEMENT
VGI Public Participation GeoPortal
2016/7/8
The volunteered geospatial information (VGI) will be efficient and cost-effective method for generating and sharing large disasterrelated geospatial data. The national mapping organizations have playe...
ASSESSMENT OF COMPLETENESS AND POSITIONAL ACCURACY OF LINEAR FEATURES IN VOLUNTEERED GEOGRAPHIC INFORMATION (VGI)
Volunteered Geographical Information Data Quality Quality Assessment Positional Accuracy completeness
2016/1/15
Recent advances in spatial data collection technologies and online services dramatically increase the contribution of ordinary people to produce, share, and use geographic information. Collecting spat...
YOU DESCRIBE IT,I WILL NAME IT:AN APPROACH TO ALLEVIATE THE EFFECT OF USERS’SEMANTICS IN ASSIGNING TAGS TO FEATURES IN VGI
Uncertainty VGI Users’ Semantics Tagging Features OpenStreetMap Perception
2015/9/21
As an important factor of VGI quality, this paper focuses on uncertainty arisen in assigning tags to features by VGI users. The VGI portals ask their users to assign (or tag) one or more data types to...
CARTOGRAPHIC REPRESENTATION OF SPATIAL DATA QUALITY IN VGI FOR USERS WITH DIFFERENT SEMANTICS
Spatial Data Quality Users’ Semantics VGI Positional Accuracy Completeness
2015/9/21
Volunteered geographic information is constantly being added, edited or removed by users. Most of VGI users are not experts, thus formal representation of spatial data quality parameters through metad...
Developing a Web-based system by integrating VGI and SDI for real estate management and marketing
Real estate support system VGI SDI Web2.0 Broker (W2B) Service composition
2014/12/1
Property importance of various aspects, especially the impact on various sectors of the economy and the country's macroeconomic is clear. Because of the real, multi-dimensional and heterogeneous natur...