everything you always wanted to know about semantic web technologies - but were afraid to ask
TRANSCRIPT
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rdf:type
dbo:Philosopher
rdfs:subClassOf
dbo:Person
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dbr:Gottfried_Wilhelm_Leibniz dbr:Christian_Wolffdbo:doctoralAdvisor
dbo:Philosopher
rdf:type
dbr:Ontology
dbo:notableIdea
foaf:name
dbo:birthDate
“Gottfried Wilhelm Leibniz“@de
“ ”^^xsd:date
“ ”^^xsd:datedbo:deathDate
dbr:Calculus_Ratiocinator
dbo:notableIdea
dbr:Leipzig
dbo:birthPlace
dbo:City
dbo:Settlement
rdf:type
rdfs:subClassOf
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Calculemus!
„The only way to rectify our reasonings is to make them as tangible as those of the Mathematicians, so that we can find our error at a glance, and when there are disputes among persons, we can simply say: Let us calculate, without further ado, to see who is right.“
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according to Thomas R. Gruber: A Translation Approach to Portable Ontology Specifications.Knowledge Acquisition, 5(2):199-220, 1993.
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Person “Gottfried”
“Wilhelm”
“Leibniz”
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Person
Philosopher Student
PhilosophyBook
Location
Book
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Person
Philosopher Student
Location
Woman
Man
⋂ ∅
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Philosopher
Person
GottfriedWilhelmLeibniz
“Gottfried”
LeipzigLocation
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● Philosopher(GottfriedWilhelmLeibniz)
● Location(Leipzig)
● birthPlace(GottfriedWilhelmLeibniz, Leipzig)
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● Philosopher ⊑ ∃knows.self
● Book ⊑ ∀author.Writer
● birthPlace(GottfriedWilhelmLeibniz, Leipzig)
● ∃birthPlace.⊤ ⊑ Person ⊤ ⊑ ∀birthPlace.Location
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Person
Philosopher
GottfriedWilhelmLeibniz Monadology
Book
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"[...] we are entering a technological age in which we will be able to interact with the richness of living information - not merely in the passive way that we have been accustomed to using books and libraries, but as active participants in an ongoing process, bringing something to it through our interaction with it, and not simply receiving something from it by our connection to it."
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Problems● information access requires expert knowledge and is expensive● information retrieval is even more expensive
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Advantages● information access does not require expert knowledge ● information retrieval via search engines
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„The web of human-readable document is being merged with a web of machine understandable data. The potential of the mixture of humans and machines working together and communication through the web could be immense.“
Tim Berners-Lee, The World Wide Web: A very short personal history, May 1998
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Advantages● Information can be automatically selected, aggregated,
remixed and published according to personal preferences
personalassistant
intelligentInfrastructure
servicesuser
Informationaggregation & filtering
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1.. http://hpi.de
2.GET /index HTTP/2Host: hpi.de
3.Harald works at <a href=”http://fiz-karlsruhe.de”> FIZ Karlsruhe</a>.
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Photo via twitter/@Edelman11
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:Gottfried_Wilhelm_Leibniz rdf:type dbo:Philosopher .:Gottfried_Wilhelm_Leibniz foaf:givenName “Gottfried”@en .:Gottfried_Wilhelm_Leibniz dbo:birthYear 1646 .:Gottfried_Wilhelm_Leibniz dbo:deathYear 1716 .:Gottfried_Wilhelm_Leibniz dbo:birthPlace dbr:Leipzig .:Gottfried_Wilhelm_Leibniz dbo:deathPlace dbr:Hannover ....
:Gottfried_Wilhelm_Leibniz rdf:type dbo:Philosopher .
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dbo:Philosopher rdf:type owl:class .dbo:Philosopher rdfs:subClassOf dbo:Person .dbo:birthPlace rdf:type rdf:Property .dbo:birthPlace rdfs:domain dbo:Person .dbo:birthPlace rdfs:range dbo:Location .dbo:birthYear rdf:type rdf: Property .dbo:birthYearr rdfs:domain dbo:Person .dbo:birthYear rdfs:range xsd:Integer ....
Philosopher
dbo:birthPlacePerson
rdfs:subClassOf
Location
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Person
Gottfried_Wilhelm_Leibniz
dbo:author
new:LivingPeople new:DeadPeople∩ = ∅
rdf:type
rdfs:subClassOf
∀x.∃y.deathDate(x,y)∧Person(x)∧Date(y) → DeadPeople(x)
Monadology
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Look for the Philosophers who have authored
the most books
PREFIX dbo: <http://dbpedia.org/ontology/>PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
select ?s COUNT(DISTINCT ?book) as ?num WHERE { ?s rdf:type dbo: Philosopher . ?book dbo:author ?s ; rdf:type dbo:Book .} GROUP BY ?sORDER BY DESC(?num)
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Look for the Philosophers who have
authored the most books
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Look for the Philosophers who have authored
the most books
select ?sLabel (COUNT(DISTINCT ?book) as ?num) WHERE { ?s wdt:P106 wd:Q4964182 . #Philosophers ?book wdt:P50 ?s ; #authors wdt:P31 wd:Q571 . #Book SERVICE wikibase:label { bd:serviceParam wikibase:language "en, fr, de". }} GROUP BY ?sLabelORDER BY DESC(?num)
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Look for the Philosophers who have
authored the most books
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rdf:type
dbo:Philosopher
rdfs:subClassOf
dbo:Person
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Leibniz wrote to Caroline of Ansbach that Newton’s physics was detrimental to natural theology. However, eager to defend the Newtonian view, it was Clarke who responded and the correspondence between both continued until the death of Leibniz.
dbr:Gottfried_Willhelm_Leibniz dbr:Christian_Wolffdbo:doctoralAdvisor
dbo:Philosopher
rdf:type
dbr:Ontology
dbo:notableIdea
text
knowledge base
foaf:name
dbo:birthDate
“Gottfried Wilhelm Leibniz“@de
“ ”^^xsd:date
“ ”^^xsd:datedbo:deathDate
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Leibniz wrote to Caroline of Ansbach that Newton’s physics was detrimental to natural theology. However, eager to defend the Newtonian view, it was Clarke who responded and the correspondence between both continued until the death of Leibniz.
text
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Leibniz wrote to Caroline of Ansbach that Newton’s physics was detrimental to natural theology. However, eager to defend the Newtonian view, it was Clarke who responded and the correspondence between both continued until the death of Leibniz.
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SELECT ?o WHERE { wd:Q9047 wdt:P19 ?o . ?o wdt:P31/wdt:P279* wd:Q618123 .}
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