@prefix dcat: . @prefix dct: . @prefix foaf: . @prefix prov: . @prefix rdfs: . @prefix skos: . @prefix spdx: . @prefix vcard: . @prefix xsd: . a dct:Location . a skos:Concept ; skos:prefLabel "Transport"@en . a dct:MediaTypeOrExtent . a dct:MediaTypeOrExtent . a dct:MediaTypeOrExtent . a dct:MediaTypeOrExtent . a dct:MediaTypeOrExtent . a dct:Frequency . a dct:MediaType . a dct:MediaType . a dct:MediaType . a dct:MediaType . a dct:MediaType . a dct:Standard . a dct:Standard . a dcat:Dataset ; dct:description "Data gathering pilot in Helsinki, traffic counting using machine vision (HRI), CC BY 4.0." ; dct:title "Ratapihantie traffic counts, spring 2023" . a foaf:Agent ; foaf:name "Forum Virium Helsinki" . a dct:Standard . a dcat:Distribution ; dct:description "The data model as SHACL; sha256 ede7d0405fe2691dd3a481b4e1ea3acb5563118cc9cf190823f085f47c0fbf8e." ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.676033"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "helsinki model.shacl.ttl" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "ede7d0405fe2691dd3a481b4e1ea3acb5563118cc9cf190823f085f47c0fbf8e"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "5523"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as OWL; sha256 4a3f750e79b1bae78e242af60c66bf5484566e14f8e8eb4ad17b22389e16c90e." ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675860"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "helsinki model.owl.ttl" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "4a3f750e79b1bae78e242af60c66bf5484566e14f8e8eb4ad17b22389e16c90e"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "3676"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description """The NGSI-LD API (ETSI GS CIM 009) of this dataset: query, filter and page its entities. The first ten TrafficFlowObserved entities: curl -H 'Accept: application/ld+json' 'https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/ngsi-ld/v1/entities?type=TrafficFlowObserved&limit=10' Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in. The fields it filters on and example queries that answered with this dataset's data: https://api.dev.joinedcontext.com/d/q7gad2u6qwo6rbewizbknihhu2dt4yvd""" ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.674396"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "NGSI-LD API" ; dcat:accessService [ a dcat:DataService ; dct:conformsTo ; dct:title "NGSI-LD API" ; dcat:endpointURL ; dcat:servesDataset ] ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model in every formalism, for every model version, each artifact with its sha256 (EP-68)." ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675549"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "Schema artifacts" ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description """OGC API - Features, read-only: Part 1 (Core: collections and items), Part 2 (coordinate reference systems by reference) and Part 3 (Filtering with CQL2). https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/ogc/features/conformance lists the classes this endpoint serves. In QGIS: Layer, Add Layer, Add WFS / OGC API - Features Layer, a new connection with the URL https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/ogc/features/. With curl: curl 'https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/ogc/features/collections' Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in. The fields it filters on and example queries that answered with this dataset's data: https://api.dev.joinedcontext.com/d/q7gad2u6qwo6rbewizbknihhu2dt4yvd""" ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675379"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "OGC API - Features" ; dcat:accessService [ a dcat:DataService ; dct:conformsTo ; dct:title "OGC API - Features" ; dcat:endpointURL ; dcat:servesDataset ] ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as RDF; sha256 3a756e1671b07dab6f3e8a7c9b06a892d8c8a5f47049115d7354894cdd70a7d6." ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675916"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "helsinki model.rdf.ttl" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "3a756e1671b07dab6f3e8a7c9b06a892d8c8a5f47049115d7354894cdd70a7d6"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "1788"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description "The Endpoint's own DCAT-AP 3.0 description, which this dataset is published from (EP-63)." ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675606"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "DCAT-AP record" ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as LinkML; sha256 547e83accb9b3642f2166f75e75c04c11e5cdd58377ffa9f62e7e54b3eead011." ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675743"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "helsinki model.linkml.yaml" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "547e83accb9b3642f2166f75e75c04c11e5cdd58377ffa9f62e7e54b3eead011"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "11532"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description """For AI assistants: a Model Context Protocol server over this dataset's endpoint https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd. It answers anyone, with no sign-in, what the endpoint serves the public. Tools: `query_entities` (the rows of an entity type, with an NGSI-LD `q` filter, `attrs`, `count` and paging), `get_entity` (one entity by its URN), `describe_schema` (the data model: read it first) and `describe_access` (what you may read). Licence: Creative Commons Attribution 4.0; the data is reused under it. An MCP client reaches it with this configuration: {"mcpServers":{"helsinki-vision-counts":{"type":"http","url":"https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/mcp"}}} """ ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675253"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "Model Context Protocol" ; dcat:accessService [ a dcat:DataService ; dct:conformsTo ; dct:title "Model Context Protocol" ; dcat:endpointURL ; dcat:servesDataset ] ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as JSON Schema; sha256 a20abe37fbaf8248ba40e5a69b72334046a8cca4e07345f94744a6c45408e998." ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675974"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "helsinki model.schema.json" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "a20abe37fbaf8248ba40e5a69b72334046a8cca4e07345f94744a6c45408e998"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "3778"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as Markdown; sha256 5f1d9b71e453e2936b5827c6b83eaa1fff653c95e1a0850791fe395145fb30b4." ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675803"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "helsinki model.md" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "5f1d9b71e453e2936b5827c6b83eaa1fff653c95e1a0850791fe395145fb30b4"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "2952"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description """Live updates: open one WebSocket, subscribe to the entities you want, and each change arrives as a message, with no server of your own. With websocat, then type the subscription: websocat --protocol ngsi-ld-ws 'wss://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/ws' {"metadata":{"x-op":"x-subscribe","x-id":"s1"},"body":{"type":"Subscription","entities":[{"type":"TrafficFlowObserved"}]}} Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in. The message format, the limits and examples in JavaScript and Python: https://dev.joinedcontext.com/docs/API/07-websocket""" ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675320"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "Live updates over WebSocket" ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description """A CSV table, generated on each download from the endpoint's live data. curl -o file.csv 'https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/file.csv' Open to anyone, with no sign-in.""" ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675152"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "CSV" ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description "The data model as JSON-LD; sha256 d0bc5d6a345a2e4f3ec470e02f60ab067188678bbbcfcef265666dba99ccc7cb." ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675682"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "helsinki context.jsonld" ; spdx:checksum [ a spdx:Checksum ; spdx:algorithm spdx:checksumAlgorithm_sha256 ; spdx:checksumValue "d0bc5d6a345a2e4f3ec470e02f60ab067188678bbbcfcef265666dba99ccc7cb"^^xsd:hexBinary ] ; dcat:accessURL ; dcat:byteSize "1517"^^xsd:nonNegativeInteger ; dcat:mediaType . a dcat:Distribution ; dct:description """OData v4, read-only: each entity type is an entity set, with $filter, $select, $orderby and $top. In Excel: Data, Get Data, From Other Sources, From OData Feed, then the URL https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/odata/v4/. In Power BI: Get data, OData feed, the same URL. With curl: curl 'https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/odata/v4/' Its entity sets: https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/odata/v4/TrafficFlowObserved. Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in. The fields it filters on and example queries that answered with this dataset's data: https://api.dev.joinedcontext.com/d/q7gad2u6qwo6rbewizbknihhu2dt4yvd""" ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675438"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "OData v4" ; dcat:accessURL ; dcat:mediaType . a dcat:Distribution ; dct:description """OGC SensorThings API 1.1, read-only: Things, Datastreams and Observations. curl 'https://api.dev.joinedcontext.com/api/endpoint/q7gad2u6qwo6rbewizbknihhu2dt4yvd/sta/v1.1/Things' Always live: the catalogue holds this link, never a copy. Open to anyone, with no sign-in. The fields it filters on and example queries that answered with this dataset's data: https://api.dev.joinedcontext.com/d/q7gad2u6qwo6rbewizbknihhu2dt4yvd""" ; dct:format ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:license ; dct:modified "2026-10-27T13:41:07.675494"^^xsd:dateTime ; dct:rights [ a dct:RightsStatement ; rdfs:label "Source: Forum Virium Helsinki, CC BY 4.0" ] ; dct:title "OGC SensorThings API" ; dcat:accessService [ a dcat:DataService ; dct:conformsTo ; dct:title "OGC SensorThings API" ; dcat:endpointURL ; dcat:servesDataset ] ; dcat:accessURL ; dcat:mediaType . a dct:Standard . a dct:Standard . a dct:MediaTypeOrExtent . a dct:MediaType . a foaf:Document . a rdfs:Resource . a rdfs:Resource . a rdfs:Resource . a rdfs:Resource . a dct:MediaTypeOrExtent . a dct:MediaType . a dct:MediaTypeOrExtent . a dcat:Dataset ; dct:accrualPeriodicity ; dct:conformsTo ; dct:description "The vehicles one camera counted by machine vision at the Ratapihantie / Rautatieläisenkatu junction from 2023-04-04 to 2023-06-06 (Wapice Oy's data collection pilot), per lane, vehicle class and day. Smart Data Models type TrafficFlowObserved (intensity, vehicleType: car, bus, tram, motorcycle, bicycle, lorry); the custom property trafficDirection names the direction of travel (north, south). Pedestrians and e-scooters are no Smart Data Models vehicle class and are left out, as is the pilot's last, partial day. The pilot's counts were not checked against manual counts. Source: Forum Virium Helsinki, CC BY 4.0." ; dct:identifier "q7gad2u6qwo6rbewizbknihhu2dt4yvd" ; dct:issued "2026-10-25T20:46:08.354966"^^xsd:dateTime ; dct:modified "2026-10-27T13:41:07.655830"^^xsd:dateTime ; dct:publisher ; dct:source ; dct:spatial ; dct:title "Machine vision traffic counts, Ratapihantie 2023 — Helsinki" ; dcat:contactPoint [ a vcard:Kind, vcard:Organization ; vcard:fn "joinedcontext" ; vcard:hasEmail ] ; dcat:distribution , , , , , , , , , , , , , , , ; dcat:keyword "cycling", "cykling", "konenäkö", "liikennelaskenta", "machine vision", "maskinseende", "pyöräily", "traffic counting", "trafikräkning" ; dcat:landingPage ; dcat:theme ; prov:wasGeneratedBy [ a prov:Activity ; rdfs:label "pipeline vision-counts" ] . a dct:MediaType . spdx:checksumAlgorithm_sha256 a spdx:ChecksumAlgorithm . a dct:LicenseDocument .