Examples from the lectures - Revision history

Sinoa at 10:54, 20 January 2025

2025-01-20T10:54:31Z

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			<!--
	==Lecture 2: RDF==		==Lecture 2: RDF==
	Blank nodes for anonymity, or when we have not decided on a URI:		Blank nodes for anonymity, or when we have not decided on a URI:
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	vector_neighbours(embeddings['oslo'] - embeddings['norway'] + embeddings['france'])		vector_neighbours(embeddings['oslo'] - embeddings['norway'] + embeddings['france'])
	</syntaxhighlight>		</syntaxhighlight>
			-->

Sinoa: /* Lecture 10: OWL-DL */

2024-04-17T11:24:46Z

Lecture 10: OWL-DL

@@ Line 612: / Line 612: @@
    ?s ?p ?o
+}
 </syntaxhighlight>

Sinoa: /* Lecture 7: SHACL */

2024-04-05T19:46:36Z

Lecture 7: SHACL

← Older revision		Revision as of 19:46, 5 April 2024
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	==Lecture 7: SHACL==		==Lecture 8: SHACL==
	The examples are for use with the [https://shacl.org/playground/ interactive SHACL Playground].		The examples are for use with the [https://shacl.org/playground/ interactive SHACL Playground].

Sinoa: /* Lecture 8: RDFS */

2024-04-05T19:40:05Z

Lecture 8: RDFS

← Older revision		Revision as of 19:40, 5 April 2024
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	==Lecture 7: RDFS==		==Lecture 8: RDFS==
	Create a new ~~Blazegraph Namespace ''~~with inference'' and ~~''Use'' it~~.		Create two new GraphDB Repositories, one with RDFS inference and one with No inference. Try the SPARQL statements on both, so you can compare them.

	~~===~~rdfs:subClassOf~~===~~		To test ''rdfs:subClassOf'':
	~~In the ''Update'' tab, insert the ''Final data graph'' from the SHACL example above. (Select ''Type: RDF data'' and~~ ''~~Format~~: ~~Turtle''.)~~

	~~Go to the ''Query'' tab, and SELECT all papers of type ''kg:MainPaper''.~~
	<syntaxhighlight lang="ttl">		<syntaxhighlight lang="ttl">
			PREFIX kg: <http://i2s.uib.no/kg4news/>
	PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>		PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
	PREFIX sh: <http://www.w3.org/ns/~~shacl#>~~		PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
	~~PREFIX dcterm: <http:~~/~~/purl.org/dc/terms/>~~
	~~PREFIX foaf: <http://xmlns.com/foaf/0.1/>~~
	~~PREFIX skos: <http://www.w3.org/2004/02/skos/core~~#>
	~~PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>~~
	~~PREFIX kg: <http://i2s.uib.no/kg4news/>~~
	~~PREFIX th: <http://i2s.uib.no/kg4news/theme/>~~
	~~PREFIX ss: <http://semanticscholar.org/~~>

	~~SELECT ?paper WHERE~~ {		INSERT DATA {
	~~?paper~~ rdf:type kg:MainPaper		kg:LOD_paper rdf:type kg:MainPaper .
			kg:MainPaper rdfs:subClassOf kg:Paper .
	}		}
	</syntaxhighlight>		</syntaxhighlight>

	~~Change the query to select all papers first of type ''ss~~:~~Paper'' and then of type ''foaf~~:~~Document''~~.		<syntaxhighlight lang="ttl">
			PREFIX kg: <http://i2s.uib.no/kg4news/>
			PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
			PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

	~~In the ''Update'' tab:~~		ASK {
	~~<syntaxhighlight lang="ttl">~~		kg:LOD_paper rdf:type kg:Paper .
	kg:~~MainPaper rdfs~~:~~subClassOf ss~~:Paper .		}
	</syntaxhighlight>		</syntaxhighlight>

	~~Back in the ''Query'' tab, rerun the query to select all papers first of type ''ss:Paper'' and then of type ''foaf:Document''.~~

	~~===Transitive~~ rdfs:~~subClassOf===~~		To test ''rdfs:domain'':
	~~In the ''Update~~'' ~~tab, add the following RDFS rule~~:
	<syntaxhighlight lang="ttl">		<syntaxhighlight lang="ttl">
	ss:~~Paper~~ rdfs:~~subClassOf foaf~~:~~Document~~ .		PREFIX kg: <http://i2s.uib.no/kg4news/>
			PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
			PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

			INSERT DATA {
			kg:TBL kg:author kg:LOD_paper .
			kg:author rdfs:domain kg:Author .
			}
	</syntaxhighlight>		</syntaxhighlight>

	~~Back in the ''Query'' tab, rerun the query to select all papers first of type ''ss:Paper'' and then of type ''foaf:Document''.~~

	~~===rdfs:range===~~
	~~In the ''Update'' tab, add another paper, which is cited (referenced) by the LOD paper:~~
	<syntaxhighlight lang="ttl">		<syntaxhighlight lang="ttl">
	kg:~~SW_Paper~~		PREFIX kg: <http://i2s.uib.no/kg4news/>
	~~dcterm~~:~~title "The Semantic Web" ;~~		PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
	~~dcterm~~:~~contributor kg~~:~~TBL, kg~~:~~JH, kg~~:OL .		PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

	kg:JH		ASK {
	~~foaf~~:~~name "J. Hendler" .~~		kg:TBL rdf:type kg:Author .
			}
	kg:OL
	~~foaf:name "O. Lassila"~~ .

	~~kg:LOD_Paper kg:cites kg:SW_Paper # the new SW paper is cited by the LOD paper~~
	</syntaxhighlight>		</syntaxhighlight>
	~~Note that we have ''not'' stated the RDF types of the new paper and new authors.~~

	~~In the ''Query'' tab, rerun the SPARQL queries to check that ''kg:SW_Paper'' has no ''rdf:type''.~~

	In the ~~''Update'' tab add this RDFS rule~~:		To see all the triples in the KG:
	<syntaxhighlight lang="ttl">		<syntaxhighlight lang="ttl">
	~~kg:cites rdfs:range ss:Paper . # any paper that is cited by a kg:MainPaper is an ss:Paper~~		SELECT * WHERE {
			?s ?p ?o
			}
	</syntaxhighlight>		</syntaxhighlight>

	~~Back in the ''Query'' tab, rerun the SPARQL queries to check that the new SW paper is now an ''ss:Paper'' and ''foaf:Document'', but not a ''kg:MainPaper''.~~

	==Lecture 10: OWL-DL==		==Lecture 10: OWL-DL==

Sinoa: /* Lecture 3: SPARQL */

2024-01-31T13:22:46Z

Lecture 3: SPARQL

← Older revision		Revision as of 13:22, 31 January 2024
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	==Lecture 3: SPARQL==		==Lecture 3: SPARQL==

	The KG4News knowledge graph can be accessed [http://bg.newsangler.uib.no here (namespace ''kb'')] (read-only)~~. To test updates~~, you can ~~run~~ your own ~~Blazegraph server or try~~ the [http://~~sandbox.~~i2s.uib.no ~~I2S sandbox]~~.		The KG4News knowledge graph can be accessed online [http://bg.newsangler.uib.no here (namespace ''kb'')] (read-only), or you can load the Turtle file into your own GraphDB repository.
			(Remember to save the file with ''.ttl'' extension. You can use ''http://i2s.uib.no/kg4news/'' as base URI.)

	===Limit===		===Limit===

Sinoa at 11:57, 10 January 2024

2024-01-10T11:57:03Z

← Older revision		Revision as of 11:57, 10 January 2024
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	~~=Examples from the lectures=~~

	''This page currently shows the examples used in the Spring of 2023.		''This page currently shows the examples used in the Spring of 2023.

Sinoa at 11:28, 10 January 2024

2024-01-10T11:28:02Z

← Older revision		Revision as of 11:28, 10 January 2024
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	=Examples from the lectures=		=Examples from the lectures=

	'''This page currently shows the examples used in the Spring of 2023.		''This page currently shows the examples used in the Spring of 2023.
	It will be updated with examples from 2024 as the course progresses.'''		It will be updated with examples from 2024 as the course progresses.''

	==Lecture 1: Introduction to KGs==		==Lecture 1: Introduction to KGs==

Sinoa at 11:11, 10 January 2024

2024-01-10T11:11:22Z

← Older revision		Revision as of 11:11, 10 January 2024
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	=Examples from the lectures=		=Examples from the lectures=

			'''This page currently shows the examples used in the Spring of 2023.
			It will be updated with examples from 2024 as the course progresses.'''

	==Lecture 1: Introduction to KGs==		==Lecture 1: Introduction to KGs==
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	==Lecture 3:SPARQL==		==Lecture 3: SPARQL==

	The KG4News knowledge graph can be accessed [http://bg.newsangler.uib.no here (namespace ''kb'')] (read-only). To test updates, you can run your own Blazegraph server or try the [http://sandbox.i2s.uib.no I2S sandbox].		The KG4News knowledge graph can be accessed [http://bg.newsangler.uib.no here (namespace ''kb'')] (read-only). To test updates, you can run your own Blazegraph server or try the [http://sandbox.i2s.uib.no I2S sandbox].

Sinoa at 11:09, 10 January 2024

2024-01-10T11:09:33Z

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Sinoa at 10:58, 10 January 2024

2024-01-10T10:58:56Z

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