This paper describes our participation at the GeoCLEF 2005 task. We detail the main software components of our Geo-IR system, its adaptation for the participation at GeoCLEF and d...
Nuno Cardoso, Bruno Martins, Marcirio Silveira Cha...
Assume that a franchise plans to open k branches in a city, so that the average distance from each residential block to the closest branch is minimized. This is an instance of the ...
This paper proposes and solves a-autonomy and k-stops shortest path problems in large spatial databases. Given a source s and a destination d, an aautonomy query retrieves a sequen...
This paper introduces a novel type of query, what we name Spatio-temporal Pattern Queries (STP). Such a query specifies a spatiotemporal pattern as a sequence of distinct spatial...
Marios Hadjieleftheriou, George Kollios, Petko Bak...
As recording technology becomes pervasive there is a dramatic increase in the number of events being recorded in multimedia. The challenge now facing users is to quickly view the ...