186 Big Data: Techniques and Technologies in Geoinformatics
map should be personalized, however. Routing and navigation services are no longer
limited to the 2D world but tend to increasingly include 3D representations of the
environment. But experimental research reveals signicant issues in using the third
dimension to create effective data visualizations, thus the need to select only the ele-
ments that should be displayed, especially for mobile devices (Shepherd 2008). The
need of displaying only a subset of relevant elements puts forward the need for mod-
elling users’ context appropriately for mobile applications and gathering information
on users’ context. The information on users’ context can also be obtained through
the processing of ...