Contextualized attention metadata can be used to visualize the attendance in online events and communities, as well as to indicate an online object’s reuse. In this paper, we describe work in progress showing that attention metadata generated by desktop videoconferencing systems, such as FlashMeeting, can be used to plot community activity and to give some insights into a learning object’s impa...

This paper addresses unsupervised hierarchical classification of personal documents tagged with time and geolocation stamps. The target application is browsing among these documents. A first partition of the data is built, based on geo-temporal measurement. The events found are then grouped according to geolocation. This is carried out through fitting a two-level hierarchy of mixture models to ...

Locating users and terminals accurately within buildings is an important technology for mobile applications. However indoor geolocation systems presented in the past are often restricted to certain applications or sensor systems and mostly provide location information in a context-specific manner. The WhereMoPS system is a flexible research platform for advanced indoor geolocation systems which...

IP Geolocation databases are widely used in online services to map end-user addresses their geographical location. However, they use proprietary geolocation methods, and some cases have poor accuracy. We propose a systematic approach reverse DNS hostnames for geolocating addresses, with focus on as opposed router IPs. Our method is designed be combined other data sources. cast the task machine ...

Electronic tags have enhanced our understanding of the movements and behavior of pelagic animals by providing position information from the Argos system satellites or by geolocation estimates using light levels and/or sea surface temperatures (SSTs). The ability to geolocate animals that remain submerged is of great value to fisheries management, but the accuracy of these geolocation estimates ...