Query processing in spatial network databases
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
A web-enabled extension of a spatio-temporal DBMS
Proceedings of the 15th annual ACM international symposium on Advances in geographic information systems
Computing isochrones in multi-modal, schedule-based transport networks
Proceedings of the 16th ACM SIGSPATIAL international conference on Advances in geographic information systems
Instance optimal query processing in spatial networks
The VLDB Journal — The International Journal on Very Large Data Bases
Determining objects within isochrones in spatial network databases
ADBIS'10 Proceedings of the 14th east European conference on Advances in databases and information systems
Defining isochrones in multimodal spatial networks
Proceedings of the 20th ACM international conference on Information and knowledge management
Scalable computation of isochrones with network expiration
SSDBM'12 Proceedings of the 24th international conference on Scientific and Statistical Database Management
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In this paper, we present a web-based system, termed ISOGA, that uses isochrones to perform geographical reachability analysis. An isochrone in a spatial network covers all space points from where a query point is reachable within given time constraints. The core of the system builds an efficient algorithm for the computation of isochrones in multimodal spatial networks. By joining isochrones with other databases, various kinds of geospatial reachability analysis can be performed, such as how well is a city covered by public services or where to look for an apartment at moderate prices that is close to the working place. ISOGA adopts a service-oriented three-tier architecture and uses technologies that are compliant with OGC standards. We describe several application scenarios in urban and extra-urban areas, which show the applicability of the tool.