The automatic generation of travel‐time maps is a prerequisite for many fields of application
such as tourist assistance and spatial decision support systems, for example to analyze the …

In the context of public transportation, isochrone maps display the area accessible from a
starting point within a given travel time. Transit networks are often displayed using a …

Accessibility analyses are an essential step in the evaluation and planning of urban
infrastructures such as transport or pipeline networks. However, these studies generally …

We study the one-to-many journey planning problem in multi-modal transportation networks
consisting of a public transit network and an additional, non-schedule-based mode of …

This thesis studies the design of journey planning algorithms for multimodal passenger
transport networks. In particular, we consider the combination of public transit (eg, trains …

We study the problem of computing isocontours in static and dynamic road networks, where
the objective is to identify the boundary of the region that is reachable from a given source …

Let P be a polygon and C a set of shortcuts, where each shortcut is a directed straight-line
segment connecting two vertices of P. A shortcut hull of P is another polygon that encloses P …

With the ubiquity of mobile devices that are capable of tracking positions (be it via GPS or Wi-
Fi/mobile network localization), there is a continuous stream of location data being …