Here we list a selection of projects we are currently involved with:

gbonS2

Given a set of prioritized balls with fixed centers in Rd whose radii grow linearly over time, we want to compute the elimination order of these balls assuming that when two balls touch, the one with lower priority is ’crushed’.

Code: github

libdts2

A library to compute a constrained delaunay triangulation on the sphere. It also supports the calculation of intersection points of constrained edges.

Code: github

libratss

This library snapps points that are ε-close to the sphere to rational points that are no more than 2ε away from their closest point on the sphere.

Code: github

OSCAR

A spatio-textual search engine for OpenStreetMap data.

Website: stable version
Website: development version
Code: oscar-web, oscar

News

[Nov’17] Our paper on a theoretical explanation for several speed-up techniques for route computation has been accepted at AAAI 2018!

[Oct’17] Thomas’ paper on area preserving map simplification has been accepted at ALENEX 2018!

[May’17] Daniel’s and Martin’s paper on rational points on the unit sphere has been accepted at ISSAC 2017!

[Apr’17] Our paper on personalized route planning with dynamic approximation guarantees has been accepted at SEA 2017!

[Jan’17] Martin’s paper on map matching has been accepted at SIAM SDM 2017!

[Nov’16] Our paper on simultaneous maze solving has been accepted at AAAI 2017.

[Okt’16] Two papers, one on growing balls (!), the other on map simplification will be presented at ALENEX 2017.

[Sep’16] Our paper on Deducing Individual Driving Preferences has been accepted at the 24th ACM SIGSPATIAL GIS 2016.

[Feb’16] Our paper on placing loading stations for EVs has been accepted at ICAPS 2016.

[Jul’15] Paper about our GeoSearch Engine OSCAR at the 16th Int. Conf on Web Information Systems Engineering (WISE)!

[Jun’15] We feel very honored to have our VLDB’14 paper almost verbatimly reproduced in the ‘prestigous’ journal IJSETR, see here. Yeah! 😉

[Feb’15] We were lucky to receive a Google Research Award for research on personalized route planning!

[Sep’14] Our paper “On k-Path Covers and their Applications” has received a Best Paper Award at the 40th Int. Conference on Very Large Databases (VLDB) in Hangzhou (5 out of 139 accepted out of 695 submitted papers).

[Sep’14] Our paper on “Energy-efficient Routing: Taking Speed into Account” has received a Best Paper Award at the 37th German Conference on Artificial Intelligence (KI).

[Jul’14] Our paper “Placement of Loading Stations for Electric Vehicles: No Detours Necessary!” has received a Honorable Mention at the 28th AAAI Conference on Artificial Intelligence (AAAI) in Quebec City (5 nominated out of 398 accepted out of 1406 submitted papers).

[Mar’14] Our StuPro-Team has completed their great “SchulScheduler” project.

[Nov’13] Jochen has defended his PhD thesis and moved on to TomTom.

[Feb’13] Sabine has defended her PhD thesis (already in Dec’12) and received the INFOS award for best CS PhD thesis in 2012!

[Mar’12] Our paper Path Shapes - An Alternative Method for Map Matching and Fully Autonomous Self-Localization presented at GIS 2011 has received the Best Paper Award, also see the ACM SIGSPATIAL newsletter.