With the development of Web2.0 and mobile Internet, urban residents, a new type “sensor”, provide us with massive amounts volunteered geographic information (VGI). Quantifying spatial patterns VGI plays an increasingly important role in understanding functions. Using social media activity data, this article developed method to automatically extract identify functional zones. The is put forward ...

Over the last decade, volunteered geographic information (VGI) has become established as one of the most relevant geographic data sources in terms of worldwide coverage, representation of local knowledge and open data policies. Beside the data itself, data about community activity provides valuable insights into the mapping progress which can be useful for estimating data quality, understanding...

Volunteer geographical information (VGI), either in the context of citizen science or the mining of social media, has proven to be useful in various domains including natural hazards, health status, disease epidemics, and biological monitoring. Nonetheless, the variable or unknown data quality due to crowdsourcing settings are still an obstacle for fully integrating these data sources in enviro...

Recently, the use of electric vehicles in a power grid has been attracting attention. The success vehicle-grid integration (VGI) requires active participation not only VGI service providers but also vehicle owners, utility companies, and government service. However, until now, such research sufficiently discussed. Thus, we propose framework for analyzing economic environment which each stakehol...

Currently we encounter two trends within the broader GI community: one is the move to web-based applications based on open standards as defined by the Open Geospatial Consortium (OGC) resulting in more flexible and interoperable solutions. The other is the raise of the prosumer-oriented GeoWeb2.0, with its user generated content. Goodchild (2007) gives an overview of these global collaborations...