openstreetmap as base layer in a linked open data distribution platform - bert spaan, citysdk -...
DESCRIPTION
The CitySDK Mobility API is a layer-based data distribution and service kit, which makes European mobility data and services interoperable. The API is part of CitySDK, a project funded by the European Union in which eight cities and more than 20 organisations collaborate. The CitySDK Mobility API makes it possible for developers and data owners to access and modify mobility data (e.g. public transport schedules, real-time traffic data, planned roadwork and parking space availability) through a uniform interface, in Amsterdam, Manchester, Helsinki and Rome alike. The API links different datasets from different data sources to addressable objects in a city, such as train stations, bus stops, roads and neighbourhoods. Many of those objects exist in the OpenStreetMap database; the CitySDK Mobility API uses OSM as a geospatial base layer to which it links data from other datasets. For example: GTFS schedules, Open311 service requests and real-time weather information can all be linked to a OSM node with the ""highway=bus_stop"" tag, making it very easy for data owners, city officials and developers to find and access data about the same object across different data sets. Developer's portal: http://dev.citysdk.waag.org/ API endpoint: http://api.citysdk.waag.org/TRANSCRIPT
http://dev.citysdk.waag.org/
OpenStreetMap as base layer in a linked open data distribution platform
CitySDK - Open Data & City Services
Bert [email protected]
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Waag Society
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CitySDK
•City Services •Moveable code•One interface for 8 European cities•More and better open data
•Tourism, participation & mobility
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Data examples
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Data examples
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Data examples
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Open Data
•Good news: lots of open data available•Bad news:
• Incomplete data•Old data•Datasets not linked
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Open Data
★ Data online, open license
★ ★ Structured data
★ ★ ★ Non-proprietary format
★ ★ ★ ★ Use URIs to identify data
★ ★ ★ ★ ★ Link data to other data
Tim Berners-Lee:
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Open Data
★ Data online, open license
★ ★ Structured data
★ ★ ★ Non-proprietary format
★ ★ ★ ★ Use URIs to identify data
★ ★ ★ ★ ★ Link data to other data
Current situation:
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DBpedia
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Dutch Railways
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Gemeentelijk Vervoersbedrijf
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Foursquare
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Weather information
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3. Service Requests
2. Public Transport
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3. Service Requests
2. Public Transport
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CitySDK API
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Unified REST API
•Data from different data sources•REST API - per-object access•Read+write• JSON•Turtle - semantic web
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Linked Open Data
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API demonstration
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Linking datasets
•“Museum of Science and Industry” = “MOSI”•“Manchester” ≠ “Greater Manchester”•“Wales” = “Cymru”
•Name? Location?
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•CMS •Easy to add and
update data•Static & realtime
Data owners
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Data owners
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Data owners
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Data owners
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Federated servers
Discovery service
Istanbul API
Lisbon API
Manchester APIAmsterdam API
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Istanbul
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Summary
•Data•OpenStreetMap•Public transport - GTFS•Addresses & buildings•Open311•Parking garages•Electrical vehicle charging points•POIs & cultural events
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Summary
•API•Nodes, layers & key-value data•REST API• JSON & Turtle/RDF•Static & real-time data•CMS for data import
• Instances•Amsterdam, Istanbul, Lamia
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