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Simon Poole Swiss OpenStreetMap Association

Simon Poole Swiss OpenStreetMap Association. Die Interaktion zwischen Crowdsource-Daten und Regierungsdaten. Können wir die Einbahnstrasse überwinden?. a free and open crowd-sourced database of geographic information NOT an online map provider

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Simon Poole Swiss OpenStreetMap Association

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  1. Simon Poole Swiss OpenStreetMap Association Die Interaktion zwischen Crowdsource-Daten und Regierungsdaten. Können wir die Einbahnstrasse überwinden?

  2. a free and open crowd-sourced database of geographic information • NOT an online map provider • a ecosystem of applications and service (commercial) providers • a consumer of open data OpenStreetMap is ...

  3. U.S. Geological Survey (USGS) • French Cadastre • Communal administrative borders Switzerland • Public transport stops Switzerland (DIDOK) Examples of OGD in OSM

  4. rollstuhlkarte.ch

  5. roughly 30'000 public transport stops • data is submitted to the BAV by the PT operators • contains location information, UIC id • is used by the SBB, Google, OSM and many others DIDOK List

  6. Short Walk

  7. Google

  8. OSM

  9. Longish Walk :-)

  10. WRONG Government Data is sometimes ...

  11. Positional errors in original 2010 import ~15% • Roughly 20'000 stops have been “verified” DIDOK Errors

  12. Feedback from the use of OGD in crowd-sourcing projects has the potential to support detecting and removing errors.

  13. Interest • is data quality for the data owner relevant and important? • does the “improver” even want to make his work available (competitive advantage)? • Legal • crowdsourcing projects typically have restrictive and potentially viral licences (CC by-SA, ODbL ..) • OGD licences don't necessarily have terms that require improvements to be made available Barriers

  14. The OSM Licence Mixer

  15. Everybody uses OdbL :-) • OSM allows additional distribution licences • Technical separation of edits (corrections) to imported data • Only use OSM as a hint that data may have to be resurveyed/collected Solutions?

  16. rollstuhlkarte.ch by Thomas Ineichen • didok.osmd.ch DIDOK – OSM comparision by Michael Spreng • sosm.ch Swiss OpenStreetMap Association • Simon Poole simon@poole.ch

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