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Neogeography: the challenge of channelling large and ill-behaved data streams Maurice van Keulen and Rolf de By LOCATION INTELLIGENCE FOR SERIOUS APPLICATIONS IN THE LESS DEVELOPED WORLD Spatial information is becoming an ordinary commodity Google Earth & Maps, MS Bing, NASA’s WorldWind Geo-tagging of visited places, meetings, activities; automatic geotagging by personal devices: photo/video camera, cell phone Social networks with location intelligence In the less developed world, serious applications are slowly becoming a reality Location intelligence for agriculture, health, transportation and traffic, education, emergency mitigation, electronic payments, election monitoring, market prices etc. Kick-off Neogeography 12 Mar 2010 2 SOCIAL NETWORK APPLICATIONS Trucking and road availability Farming and field suitability Traffic and car-pooling Emergency response Crime and neighbourhood vigilance Urban utility monitoring Kick-off Neogeography 12 Mar 2010 3 NEOGEOGRAPHY Neogeography: applications in which geographic information derives from end-users, not only from official bodies like mapping agencies, cadastres or other official, (semi-)governmental entities. Central problems User community is dynamic Users contribute information and expect something in return Contributed information is not necessarily of good quality or trust Contributed information is somewhat unstructured (contributors cannot be expected to follow strict data schemes and they may only have access to a cell-phone operated network) Need for a new brand of location-based information management Kick-off Neogeography 12 Mar 2010 4 Example neogeo sites Importance of neogeography in disaster response In disaster events: In situ real-time data may be scarce, may be mutually inconsistent, and may change over time is needed to augment partial knowledge and understanding. Communication infrastructure may be damaged. All data is welcome, all kinds of data also: witness reports photos audio videos human and machine sensor readings General public is a powerful information source, and generally has an incentive to report (911). The neogeographers in disasters People on site People affected Rescuers and other professionals Mobile telephone providers Press Biggest challenge: how to make sense of large amounts of not very trustworthy information: Can you rely on what unknown sources inform you about? SYSTEM OBJECTIVE sms / sensor & satellite data / data from official bodies Open source XML-based spatial data infrastructure capable of orchestrating & processing ambiguous/vague semi/unstructured geodata workflows delivering personalized geoservices XML geoservices Kick-off Neogeography 12 Mar 2010 8 SCIENTIFIC CHALLENGES Spatiotemporal features Extend XML database technology to fully include spatial feature support (OGC) and support for fully XML-based development of geoservices and spatiotemporal analysis Spatiotemporal vagueness Extend information extraction technology to handle ambiguity and spatiotemporal vagueness in sensor data and explicit natural language references to the where and when Data augmentation and data quality improvement Spatiotemporal profiling Provide better understanding of user’s information needs by analyzing historic requests and offered neogeographic data User profile pattern matching: finding like-minded users Kick-off Neogeography 12 Mar 2010 9 CONNECTION WITH OTHER NEOGEO PROJECT Space and time issues Uncertainty and trust Role of the volunteered information Difference: handling the map versus handling the data Kick-off Neogeography 12 Mar 2010 10 THE TEAM Rolf de By (ITC) PhD student @UT PhD student @ITC Background: Master @Ain Background: Master @ITC Shams University, Cairo about “Web geoprocessing about “Automated Arabic services on GML with a fast Text Categorization” XML database” Strong background in She proved the feasibility of natural language processing some this project’s ideas. and text/data mining. Clarisse Kagoyire (ITC) Maurice van Keulen (UT) Mena Badieh Habib (UT) Jan Flokstra (UT) Kick-off Neogeography 12 Mar 2010 11 Think outside the box