Evolution of GIS Technologies in a Web 2.0


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  • Hello. My name is Paul Swenson, and I am a Computer Science graduate student. This presentation is entitled “Evolution of GIS Technologies in a Web 2.0 World.” Within this presentation, I will be going over the basic concepts of Geographic Information Systems, how they relate to Social Web Technologies, and also some interesting and relevant research efforts going on today in the wide world of academia.
  • Evolution of GIS Technologies in a Web 2.0

    1. 1. Evolution of GIS Technologies in a Web 2.0 World Paul Swenson [email_address] University of Maryland, Baltimore County Department of Computer Science CMSC691S – Social Web Technologies
    2. 2. Background
    3. 3. Introduction to GIS <ul><li>Geographic Information System </li></ul><ul><li>Wikipedia defines as: “Any system for capturing, storing, analyzing, and managing data and associated attributes which are spatially referenced to Earth.” </li></ul><ul><li>Where did GIS come from? </li></ul><ul><ul><li>Idea has been around for some ~15,500 years. </li></ul></ul>
    4. 4. Heritage of Modern GIS <ul><li>London Cholera outbreak in 1854 </li></ul><ul><li>Dr. John Snow created this map in an attempt to isolate what was infecting all the people </li></ul><ul><li>First recorded use of modern geographic (and mash-up) principles </li></ul>
    5. 5. Evolution of GIS Systems <ul><li>1962: Creation of first modern GIS computer system, CGIS </li></ul><ul><li>1964: Harvard Laboratory begins development general-purpose mapping software (SYMAP) </li></ul><ul><li>1969: ESRI founded, inspired by Harvard’s software </li></ul><ul><li>1982: ESRI releases ARC/INFO </li></ul><ul><li>1992: ESRI releases ArcView </li></ul>
    6. 6. Relationship to Social Web Technologies <ul><li>The Geospatial Web is derived from modern GIS systems and databases </li></ul><ul><li>GIS provides tantalizing material for which Web 2.0 developers can create mash-ups </li></ul>Social Web Folksonomy & Tagging Mashups Geospatial Web The Semantic Web Blogs Image courtesy of Prof. Harry Chen
    7. 7. Research Efforts
    8. 8. Extending Traditional Wiki Systems with Geographical Content <ul><li>Research effort led by Dr. Piotr Gawrysiak of the Warsaw University of Technology, Poland </li></ul><ul><li>Goal: GIS Data Store -> GeoWiki! </li></ul><ul><ul><li>Allow anyone to submit updates to the GIS vector data store </li></ul></ul><ul><ul><li>Promotes more up-to-date data </li></ul></ul><ul><ul><li>A GIS archive maintained using wiki principles would be completely free and open for anyone to use. </li></ul></ul>
    9. 9. Intended Users of System <ul><li>Normal Users </li></ul><ul><ul><li>Should be similar to Google Maps, Mapquest, Yahoo Maps, etc. </li></ul></ul><ul><li>Tech-savvy users </li></ul><ul><ul><li>Perform edits to maps </li></ul></ul><ul><ul><li>Access discussion pages </li></ul></ul><ul><ul><li>Revert edits </li></ul></ul>
    10. 10. Benefits of System <ul><li>Data public domain (Free!) </li></ul><ul><li>Able to instantly fix any inaccuracies </li></ul><ul><li>Because content is user-generated, more people contributing so more content </li></ul><ul><li>Peer + Automated review increases quality of data </li></ul>Very nice, how much? (Free!)
    11. 11. What kinds of technology used? <ul><li>Standard Web 2.0 Stuff </li></ul><ul><ul><li>DBMS backend </li></ul></ul><ul><ul><li>AJAX </li></ul></ul><ul><ul><li>Server-side scripting </li></ul></ul><ul><ul><li>Client-side JavaScript </li></ul></ul><ul><li>Advanced Wiki collaborative features + revision management </li></ul>
    12. 12. How do you use this application? <ul><li>Navigate to site of the GeoWiki </li></ul><ul><li>Enter search address </li></ul><ul><li>Choose to compute driving directions </li></ul><ul><li>Click the Edit or Discussion buttons (ala Wikipedia) for advanced features </li></ul><ul><li>Search for Points of Interest near destination or current map location </li></ul><ul><li>OR: </li></ul><ul><li>Download dump of GeoWiki GIS+POI database into handheld GPS unit for mobile navigation </li></ul>
    13. 13. Conclusions <ul><li>GIS is all about layers, and associating attributes to spatial data </li></ul><ul><li>GIS is a key buzzword in the context of Social Web Technologies </li></ul><ul><ul><li>Serves as a backend for for geospatial web applications </li></ul></ul><ul><ul><li>Provides content allowing for users to create new “layers” on top of publicly available GIS stores to create mashups </li></ul></ul><ul><li>The “wikification” of GIS </li></ul><ul><ul><li>Allows normal users to update inaccurate data and contribute new data </li></ul></ul><ul><ul><li>Apply best features of Wikis to a GIS data archive </li></ul></ul>
    14. 14. References <ul><li>&quot;Geographic information system.&quot; Wikipedia, The Free Encyclopedia . 21 April 2004. Wikimedia Foundation, Inc. 20 Mar. 2008. </li></ul><ul><li>Pietroniro et al. “Map Mashups and the Rise of Amateur Cartographers and Mapmakers.” ACMLA Bulletin . Number 127. Pages 26-30. </li></ul><ul><li>Fabrikant et. al. “Geospatial Information Bottom-Up: A Matter of Trust and Semantics.” Lecture Notes in Geoinformation and Cartography . Part 9. 2007. Pages 365-387. </li></ul><ul><li>Gawrysiak et. al. “Extending Traditional Wiki Systems with Geographical Content.” Project E-Society: Building Bricks . Volume 226. 2008. Pages 292-302. </li></ul><ul><li>Sui, D. “The wikification of GIS and its consequences: Or Angelina Jolie’s new tattoo and the future of GIS.” Computers, Environment and Urban Systems . Volume 32, Issue 1. Jan. 2008. Pages 1-5. </li></ul>
    15. 15. The End Any questions?