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DDMA / Mapscape: Datakwaliteit

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1. Event: DDMA DQ Dag Thema: Dag van de Datakwaliteit Spreker: J.H. Moll - Mapscape Datum: 7 oktober 2008 – BIM Huis www.ddma.nl 2. Towards a Quality Model for Digital…
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  • 1. Event: DDMA DQ Dag Thema: Dag van de Datakwaliteit Spreker: J.H. Moll - Mapscape Datum: 7 oktober 2008 – BIM Huis www.ddma.nl
  • 2. Towards a Quality Model for Digital Navigable Maps Case Presentation for the Dutch Quality Award 2008 J.H. Van Moll Dutch Quality Award 2008 October 7 th 2008, Amsterdam, The Netherlands Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09
  • 3. Agenda <ul><li>Introduction </li></ul><ul><li>Basics of digital maps creation </li></ul><ul><li>Digital maps and quality </li></ul><ul><li>Challenges of verifying map quality </li></ul><ul><li>Verification approaches </li></ul><ul><li>Company-wide quality initiative: towards a Quantitative Quality Model </li></ul><ul><li>Our experiences </li></ul>Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09
  • 4. Introduction <ul><li>Spin-off company from Siemens VDO/Continental </li></ul><ul><li>Independent since November 1st, 2007 </li></ul><ul><li>20+ years of experience in: </li></ul><ul><ul><li>digital map related processes, </li></ul></ul><ul><ul><li>tooling, </li></ul></ul><ul><ul><li>navigation data supply chain, </li></ul></ul><ul><ul><li>automotive requirements and quality </li></ul></ul><ul><li>Data aggregation, map compilation, map testing </li></ul>Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09
  • 5. Data collection Data export Aggregation, Transformation Product Testing Paper sources, Government data, Automobile clubs, Travel guide publishers Nav system manufacturers e.g. Elektrobit, Blaupunkt, Continental Automotive OEMs Field captured data 3D images & videos Mother database Map halfproducts Golden Product Masters Replication Replication GDF Basics of Digital Map creation - 1 Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09
  • 6. Basics of Digital Map creation - 2 <ul><li>Network of attributed Nodes and Chains </li></ul><ul><li>Example: </li></ul>Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09 c1 c3 c2 c9 c4 c5 c8 c7 c6 <ul><li>Node : </li></ul><ul><li>Id </li></ul><ul><li>Coordinates </li></ul><ul><li>Height </li></ul><ul><li>Junction type </li></ul><ul><li>… </li></ul><ul><li>Chain : </li></ul><ul><li>Id </li></ul><ul><li>Node-pair </li></ul><ul><li>Length </li></ul><ul><li>DirectionOfTraffic </li></ul><ul><li>Road Class </li></ul><ul><li>Form of Way </li></ul><ul><li>Access </li></ul><ul><li>Slope </li></ul><ul><li>Width </li></ul><ul><li>Turn restrictions </li></ul><ul><li>Road condition </li></ul><ul><li>… </li></ul>n1 n2 n4 n3 n5 n6 n7 n8
  • 7. Digital Maps and Quality Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09 Dangerous guidance advice „ Follow the main road“
  • 8. Digital Maps and Quality Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09 “ In 200 meters turn right” DESTINATION
  • 9. Digital Maps and Quality <ul><li>Truth value of data (e.g. Points of Interest POIs ) </li></ul><ul><ul><li>Select a POI „docter“ and be guided to a private address instead of the medical center </li></ul></ul><ul><ul><li>Select POI „McDonalds“ in a harbor and it turns out that the restaurant is on the ferry boat (...that just left the harbor) </li></ul></ul><ul><ul><li>„ Non-ethical“ coding: former concentration camps coded as „tourist attraction“ </li></ul></ul>Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09 <ul><li>Recently conducted UK research: </li></ul><ul><li>> 300.000 accidents caused by navigation devices </li></ul><ul><li>‘ blind’ follow-up of guidance advice: > 1.5 million drivers performed dangerous manoeuvres </li></ul>Driver (72) caused a severe traffic accident by entering an exit-ramp of a highway near Cologne
  • 10. Challenges of map verification <ul><li>Facts: </li></ul><ul><li>a map database represents a physical reality and when data elements are combined, they create a semantic meaning </li></ul><ul><li>Large amounts of multi-sourced data (..can‘t test all) </li></ul><ul><li>Reality continually changes !! </li></ul>Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09 <ul><li>How to measure representativeness/correctness of the data? </li></ul><ul><li>How to determine acceptance criteria? </li></ul><ul><li>How to express map quality? </li></ul>For a UK map: # chains > 3.500.000 # nodes > 2.600.000
  • 11. Verification Approaches <ul><li>Logical analysis approach </li></ul><ul><ul><li>Focus on detection and analysis of logical map defects and inconsistencies, risk-based </li></ul></ul><ul><ul><li>Quality profile guides in assessing severity of map defects </li></ul></ul>Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09 M Logical analysis Analyse results R Q-profile Map Specs ? Determine Pass/Fail Full or semi-automatic verification R = P * I (I leads)
  • 12. Examples A Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09 2503 2583
  • 13. Examples B Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09
  • 14. Towards a Quantitative Quality Model Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09 In-lab data verification Field testing POI comparisons Identify dimensions of quality Identify quality requirements & acceptance criteria Quality profile Refine Internal use for map validation services User experience Automotive requirements Position as an industry reference Identify and develop test technology Test methods Novelty: the application of ‘quality modeling’ to the domain of data, instead of physical products
  • 15. Profile measurement (example) Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09 Basic rules General db ADAS TPD RDS/TMC Display Positioning Routeplanning Destination input
  • 16. Our Experiences <ul><li>Verifying the data in map databases is a specific area of verification, different from other types of data typically encountered in databases (e.g. financial, administrative, logistical environments) </li></ul><ul><li>Enormous growth of data volumes (e.g. new geographic regions) necessitates an effective and efficient verification process/approach </li></ul><ul><li>No industry consensus on map quality (objective quality reference needed) </li></ul><ul><li>Quality Model is perceived as strong marketing/company profiling instrument </li></ul><ul><li>Model is used for process improvement projects at customers (data suppliers) </li></ul>Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09
  • 17. <ul><li>QUESTIONS ? </li></ul>Copyright © Mapscape B.V. | J.H. Van Moll | 2008-09
  • 18. <ul><li></li></ul><ul><li>Contact information: </li></ul><ul><li>J.H. van Moll (jan.vanmoll@mapscape.eu) </li></ul><ul><li>Mapscape B.V. </li></ul><ul><li>Henri Wijnmalenweg 5b </li></ul><ul><li>5657 EP Eindhoven </li></ul><ul><li>The Netherlands </li></ul><ul><li>Phone +31 (0)40 7113500 </li></ul><ul><li>www.mapscape.eu </li></ul><ul><li></li></ul><ul><li>Copyright © Mapscape | J.H. Van Moll | 2008-08 </li></ul>
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