This document discusses open data concepts and applications. It defines open data as data that can be used, distributed, and shared freely as long as its origin is credited. Open government data aims to increase transparency, citizen engagement, and social/economic value. Examples discussed include open data initiatives in the US and New York City. The document also covers linked open data standards and applications like OpenStreetMap. Crisis mapping examples with OpenStreetMap after the 2010 Haiti earthquake are provided. Potential issues with open data are also mentioned.

1. Open Data:
General Concepts
and Applications
Carlos Lourenço (864863)
Núria A.Vilarrasa (984336)

2. Open Data definition
« Data distributed so that anybody is
able to use, reuse and distribute it or
its modifications. »
The only requirements might be to
attribute and share alike.
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3. Technical aspects of Linked Data
• RDF standard
• SemanticWeb
– Link with URIs to identify concepts
– Web of Data
Linked Data ≠ Open Data
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4. 5 star system for linked data
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5. Open Government Data
• Sebastopol (2007)
– 1st time OGD is discussed
• The 8 principles
• Advantages:
– Transparency
– Citizenry engagement
– Social and commercial value
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6. United States
• July 1966
– Freedom of Information Act
• January 2009
– Open Government Initiative
– Obama Administration
– data.gov launched in May 2009
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7. NewYork City
• April 1993
– Public Data Directory
– FOIA request for access
• March 2012
– Open Data Law
« In NYC, open data is the law. »
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8. NYC BigApps Competition
• Presented on October 2009
• Datasets to tacke city issues
• It was a failure.
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9. NYC BigApps Competition
From 2013 onwards
• Challenges defined
by the organisation:
– Transport
– Knowledge
– Community Resiliency
• Underserved groups
targetted:
– Youth
– Seniors
– Immigrants
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• Participation on 2017 ed. (Jan – Apr)
– 500 people submitting 150 projects
– Best participation in 8 years
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10. CityBikes
• Problem
– Hard to find updated information about
Bicing, BCN’s bike sharing system
• Simple Solution
– Scraping data from Bicing’s website
• Aftermath
– Focus on the global scale, +400 cities
– APIs open and available online
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11. citybik.es
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12. OpenStreetMap
• Aim
– Free editable world map
• Database of geospatial data
– From GPS, satellite imagery, etc.
• Contributors
– Companies or individuals
• Interesting case: Crisis mapping
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13. 2010 Haiti earthquake
• Earthquake
– 12th January 2010 at 16:53
– 25km from the capital (Port-au-Prince)
– Magnitude 7.0 Mw
– Over 3 million affected people
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14. OSM aid after Haiti earthquake
• HQ imagery after 48 hours
• Allowed crisis mappers to digitalise
• Support organisations used this map
• Aftermath: Humanitarian OSMTeam
– Help by mapping vulnerable areas
– Also has long-term projects
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15. Proposition 8
• November 2008, US, California
• Legal right to same-sex marriage
• California discloses 2 datasets about:
1. Voter information
2. Campaign finance information
«What could possibly go wrong? »
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16. Eightmaps
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17. Conclusions
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