Travel Planning with Self-Made Maps

Speed-up techniques that exploit given node coordinates have proven useful for shortest-path computations in transportation networks and geographic information systems. To facilitate the use of such techniques when coordinates are missing from some, or even all, of the nodes in a network we generate artificial coordinates using methods from graph drawing. Experiments on a large set of German train timetables indicate that the speed-up achieved with coordinates from our network drawings is close to that achieved with the actual coordinates.

• Type: Conference
• Year: 2001
• Where: ALENEX
• Authors: Ulrik Brandes, Frank Schulz, Dorothea Wagner, Thomas Willhalm
• Keywords: Actual Coordinates, ALENEX 2001, ALENEX 2007, Artificial Coordinates, Node Coordinates