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Ad hoc data integration for mobile GI S a pplications

Ad hoc data integration for mobile GI S a pplications. Ramya Venkateswaran (ramya@geo.uzh.ch). -1-. Contents. Introduction: Overview of the GenW2 project Motivation: Why is Ad hoc Data Integration needed? Research Questions: Discuss 4 research questions

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Ad hoc data integration for mobile GI S a pplications

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  1. Ad hoc data integrationfor mobile GIS applications Ramya Venkateswaran (ramya@geo.uzh.ch) -1-

  2. Contents • Introduction: Overview of the GenW2 project • Motivation: Why is Ad hoc Data Integration needed? • Research Questions: Discuss 4 research questions • Next Steps:Data Enrichment, POI Mapping -2-

  3. Overview of the GenW2 Project • Short for: Generalization for portrayal in Web and Wireless mapping • Develop new methods for web and wireless mapping • Focus on ad hoc integration of heterogeneous information and on-the-fly map generalization in a mobile context. -3-

  4. The GenW2 Framework

  5. The GenW2 Framework

  6. Motivation • So many data sources and so little structure • Web as a database – Too much information to ignore! • Ad hoc integration – Need based according to scenario and flavour, unlike search engines. • Importance of recording certain facts that can enrich the MRDB and the integration process. -5-

  7. Research Questions 1 and 2 • RQ1- DI: Methods and Sources • Currently available methods of DI • Different data sources in a web and mobile environment • RQ2 – Flavour Based Integration • Flavour based data integration from various sources • Ad hoc DI vs. Normal DI • Tour guide – An example of pure web data integration -6-

  8. The GenW2 Framework

  9. Flavour Based Integration • Flavour Based Integration with web as datasource • Only web as the database • Integration of data on • Tourism • Transport • User feedback • User Rating • Facebook profile • Dopplr profile • Scheduler

  10. Research Questions 3 and 4 • RQ3 – Facts DB and Data Enrichment • Record valuable reusable information in the Facts DB • How can each POI be enriched with more information? • What kind of information can be recorded and used for later on? • RQ4 – Quality of data • Measurement of Quality? • Quality of data by completeness • Quality of data by correctness • Another metric for Quality Assessment • Quality of data by collective user feedback • Credibility rank of information in FactsDB -9-

  11. Next Steps • Determine what kind of facts can help in enrichment of MRDB. Examples • Map POI with importance (obtained from client side), two levels of importance • Assess the need of also using a geo search engine. Example SPIRIT -10-

  12. Thank you! Ramya Venkateswaran (ramya@geo.uzh.ch) Questions/Feedback? Demo and slides at http://www.geo.unizh.ch/~ramya/cosit/ -11-

  13. References • Abowd, G., Atkeson, C., Hong, J., Long, S., Kooper, R. and Pinkerton., M. 2004. Cyberguide: A mobile context aware tour guide. Springer Netherlands ISSN1022- 0038 (Print) 1572-8196 (Online).3(5):421-433 • Arentze, T.A. and Timmermans, H.J.P. 2004. A learning-based transportation oriented simulation system. Transportation Research Part B, 38(7): 613-633 • Grabler, G., Agrawala, M., Summer, R., Pauly, M. 2008. Automatic Generation of Tourist Maps. ACM Trans Graph. 27(3):1-11 • Jiang, B. and Yao, X. (2006) Location-based services and GIS in perspective. Computers, Environment and Urban Systems, 30(6):712-725. • Klippel, A., and Winter, S. 2005. Structural Salience of Landmarks for Route Directions. Spatial information theory: international conference, COSIT 2005, Elliottville, NY, USA, September 14-18, 2005: 347-362 • Michalowski, M., Ambite, J.L., Thakkar, S., Tuchinda, R., Knoblock, C.A. and Minton, S. 2004. Retrieving and semantically integrating heterogeneous data from the web. IEEE Intelligent Systems, IEEE Computer Society, 19(3):72-79 • Peng, Z.R. and Tsou, M.H. (2003) Internet GIS: Distributed Geographic Information Services for the Internet and Wireless Networks. Wiley. • Reichenbacher, T. (2004) Mobile Cartography-Adaptive Visualisation of Geographic Information on Mobile Devices. Dissertation submitted at the Institute of Photogrammetry und Cartography, Technical University, Munich. • Shiode, N., Li, C., Batty, M., Longley, P., and Maguire, D. (2003) The Impact and Penetration of Location-Based Services. In: Karimi, H. A., Hammad, A., ed. Telegeoinformatics. CRC Press, 349-366. • Thakkar, S.; Knoblock, C. and Ambite, J. (2007) Quality-driven geospatial data integration. GIS '07: Proceedings of the 15th annual ACM international symposium on Advances in geographic information systems. 1-8. -12-

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