CitySDK Linked Data API

A geospatial API for linking and distributing open data
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researching new ways of linking similar objects from different data sets

Existing data sets, legacy databases, city services

One unified REST API

Geospatial city data

Concept (1)

Concept (2)

Concept (3)

Real-time events & OSM

Statistical data & administrative regions

All buildings in the Netherlands

JSON, RDF/Turtle, GeoJSON, JSON-LD

Current research

1. Linking data sets

Rule-based, between pairs of data sets 1: Linking data sets

1: Linking data sets

Support changing data sets 1: Linking data sets

2. Categorize objects

DBpedia, OpenStreetMap, Schema.org, … 2: Categorize objects

amenity=school
dbpedia:School
schema:School 2: Categorize objects

tourism=museum
dbpedia:Museum
schema:Museum 2: Categorize objects

3. Fuzzy URIs

Linking data to objects you know exist, but don't know the URI of 3: Fuzzy URIs

Category + geohash? 3: Fuzzy URIs

cdk:amenity.school/u179mt 3: Fuzzy URIs

cdk:Museum/u173z5v 3: Fuzzy URIs

4. City data ontology

Does owl:sameAs suffice? 4: City data ontology

cdk:insideBuilding 4: City data ontology

cdk:publicTransportTransfer 4: City data ontology

Thanks!