Social microblogging services such as Twitter result in massive streams of georeferenced messages and geolocated status updates. This real-time source of information is invaluable for many application areas, in particular for disaster detection and ...

The widespread availability of Internet access and location-acquisition technologies, such as the global positioning system (GPS), has given rise to the growing phenomenon of Volunteered Geographic Information (VGI). Our work presents the use of VGI in ...

Disasters, whether natural or man-made, can occur in an unexpected and unanticipated manner causing damage and disruptions. In the event of sudden onset of a hazard, private and public transport users and pedestrians need to be informed and guided to ...

Living in the era of data deluge, we have witnessed a web content explosion, largely due to the massive availability of User-Generated Content (UGC). In this work, we specifically consider the problem of geospatial information extraction and ...

Nowadays mobile phones and especially smart phones are common technical communication devices. Most of them are equipped with a huge number of sensors that detect environment and user interaction. The processing of the sensor measurements is a big ...

Most existing algorithms assume that public transit networks are static. However in reality, a bus may be delayed or canceled, which causes routing algorithms to generate non-optimal journeys. We propose CrowdRoute, an algorithm that exploits real-time ...

OpenStreetMap is an open and collaborative project with thousands of people contributing GPS traces and other data into the making of a global map of places and networks. It is open in the sense that everyone can contribute to the project, and results ...

In the last years, volunteers have been contributing massively to what we know nowadays as Volunteered Geographic Information. This huge amount of data might be hiding a vast geographical richness and therefore research needs to be conducted to explore ...