Sebastian Hellmann: Why open data should be open linked data

  • Published on
    07-May-2015

  • View
    243

  • Download
    1

DESCRIPTION

Sebastian Hellman's (Universitt Leipzig) presentation at Prague Open Data Meetup #7: Linked Open Cities. The event was organised by Otakar Motejl Fund and LOD2 project. More info: bit.ly/open-cities-meetup

Transcript

<ul><li>1.Open Data Prague 2013/10/10 Page 1 http://lod2.eu Creating Knowledge out of Interlinked Data LOD2 Presentation . 02.09.2010 . Page http://lod2.eu AKSW, Universitt Leipzig Sebastian Hellmann Why Open Data should be Open Linked Data? http://lod2.eu http://slideshare.net/kurzum </li></ul> <p>2. Open Data Prague 2013/10/10 Page 2 http://lod2.eu 1. Terminology Open Linked Data vs. Linked Open Data 2. Level Up breaking it down 3. Perspectives solutions / approaches Overview 3. Open Data Prague 2013/10/10 Page 3 http://lod2.eu 1. Terminology Open Data data that is open (more on the next slide) Linked Data a standardized technology by W3C (based on RDF) to publish and interlink data on the web Linked Open Data vs. Open Linked Data mixture Overview 4. Open Data Prague 2013/10/10 Page 4 http://lod2.eu 1. Terminology Open Data data that is open (more on the next slide) Linked Data a standardized technology by W3C (based on RDF) to publish and interlink data on the web Linked Open Data vs. Open Linked Data mixture Overview This talk is about Open Linked Data: Open Data using Linked Data technology 5. Open Data Prague 2013/10/10 Page 5 http://lod2.eu http://lod-cloud.net LOD Cloud 6. Open Data Prague 2013/10/10 Page 6 http://lod2.eu http://lod-cloud.net LOD Cloud Linked Open Data - All datasets provide open access to individual records via HTTP - Many are free (no payment required, as in royalty-free) - Some are openly licensed, e.g. CC-0 or CC-BY-SA =&gt; Open access also applies to published HTML on the WWW, but in LOD the data itself is published via Linked Data 7. Open Data Prague 2013/10/10 Page 7 http://lod2.eu http://lod-cloud.net DBpedia: http://dbpedia.org/resource/Prague http://rdf.freebase.com/ns/m.05ywg http://sws.geonames.org/3067696/ http://linkedgeodata.org/triplify/node262709 8. Open Data Prague 2013/10/10 Page 8 http://lod2.eu Level up Public Data Infrastructure 9. Open Data Prague 2013/10/10 Page 9 http://lod2.eu Public infrastructure: Brick and mortar: Roads, electricity, water, sewage Public services: child care, libraries, schools Economic services: social security, currency, economic stability Data infrastructure: ??? Public infrastructure 10. Open Data Prague 2013/10/10 Page 10 http://lod2.eu Public infrastructure: Brick and mortar: Roads, electricity, water, sewage Public services: child care, libraries, schools Economic services: social security, currency, economic stability Data infrastructure: ??? Public infrastructure Not clearly defined yet, but like roads, it should provide a vital benefit for citizens and companies 11. Open Data Prague 2013/10/10 Page 11 http://lod2.eu Public infrastructure Open Data Strategy (Ref: IP/11/1524) expected to deliver 40 billion boost to the EU's economy each year Data becomes a tradable commodity, the value of data increases the more you share it Nigel Holmes 2012 / from The Human Face of Big Data 12. Open Data Prague 2013/10/10 Page 12 http://lod2.eu Public transportation data is highly usefull Travel companies currently can not plan point-to-point At each level (city, country, airplanes) different visualizations are used (most not very good ones) Public data infrastructure example 13. Open Data Prague 2013/10/10 Page 13 http://lod2.eu What is the current state of your local public data infrastructure? List of street names with geo-coordinates and zip codes List of companies in your area Electricity usage Pollution measurements Weather data Public data infrastructure 14. Open Data Prague 2013/10/10 Page 14 http://lod2.eu What is the current state of your local public data infrastructure? List of street names with geo-coordinates and zip codes List of companies in your area Electricity usage Pollution measurements Weather data Public data infrastructure Measurement: - How easy can you get high quality data? - Are the roads built or do you have to built them yourself? 15. Open Data Prague 2013/10/10 Page 15 http://lod2.eu Power-Up 1: Open access to data Cost factor 1: - Can I download the data? - Do I have to scrape it? - scraping HTML / PDF / RTF / Word quite work intensive 16. Open Data Prague 2013/10/10 Page 16 http://lod2.eu Power-Up 1: Open access to data No open access no benefit for data consumers no mushroom 17. Open Data Prague 2013/10/10 Page 17 http://lod2.eu Power-Up 2: Open data Open Data is the enabler to share the cost of data integration 18. Open Data Prague 2013/10/10 Page 18 http://lod2.eu Level 2 data: Downloadable + re-publishable Anybody can add value Obviously a great infrastructure for an economy Public data infrastructure example 19. Open Data Prague 2013/10/10 Page 19 http://lod2.eu Standardization and best practices keep our society efficient and effective: Driving on the right side of the road Cell phone chargers Distance of railway tracks Power-Up 3: Linked Data 20. Open Data Prague 2013/10/10 Page 20 http://lod2.eu Power-Up 3: Linked Data Seven Dwarfs...... ...... ... . . . daycare &gt; Syntactic heterogenity different trees Semantic heterogenity different tags and attributes (e.g. kindergarten, child_care, daycare) 21. Open Data Prague 2013/10/10 Page 21 http://lod2.eu Power-Up 3: Linked Data 22. Open Data Prague 2013/10/10 Page 22 http://lod2.eu Power-Up 3: Linked Data Linked Data assists third party efforts via standardization best practices 23. Open Data Prague 2013/10/10 Page 23 http://lod2.eu Take home messages: Linked Data assists third party efforts via standardization best practices Open Data is the enabler to share the cost of data integration No open access no benefit for data consumers no mushroom 24. Open Data Prague 2013/10/10 Page 24 http://lod2.eu What is the current state of your local public data infrastructure? Summary How easy can you get high quality data? - Open Access of structured data - Open licenses - Standardized formats (e.g. Linked Data or RDF) 25. Open Data Prague 2013/10/10 Page 25 http://lod2.eu Public data infrastructure 26. Open Data Prague 2013/10/10 Page 26 http://lod2.eu Public data infrastructure 27. Open Data Prague 2013/10/10 Page 27 http://lod2.eu Open Community All feedback is welcome! http://slideshare.net/kurzum Websites: http://lod2.eu Thanks for your attention </p>

Recommended

View more >