object RDFStatistics extends Serializable with Logging
A Distributed implementation of RDF Statisctics using Apache Flink.
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def
blanksAsObject(triples: DataSet[Triple]): DataSet[Triple]
19.
19. Blanks as object criterion
- triples
DataSet of triples
- returns
number of triples where blanknodes are used as objects.
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def
blanksAsSubject(triples: DataSet[Triple]): DataSet[Triple]
18.
18. Blanks as subject criterion
- triples
DataSet of triples
- returns
number of triples where blanknodes are used as subjects.
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def
dataTypes(triples: DataSet[Triple]): DataSet[(String, Int)]
20.
20. Datatypes criterion
- triples
DataSet of triples
- returns
histogram of types used for literals.
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def
labeledSubjects(triples: DataSet[Triple]): DataSet[Node]
24.
24. Labeled subjects criterion.
- triples
DataSet of triples
- returns
list of labeled subjects.
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def
languages(triples: DataSet[Triple]): DataSet[(String, Int)]
21.
21. Languages criterion
- triples
DataSet of triples
- returns
histogram of languages used for literals.
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def
links(triples: DataSet[Triple]): DataSet[(String, String, Int)]
26.
26. Links criterion.
Computes the frequencies of links between entities of different namespaces. This measure is directed, i.e. a link from
ns1 -> ns2is different fromns2 -> ns1.- triples
DataSet of triples
- returns
list of namespace combinations and their frequencies.
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def
literals(triples: DataSet[Triple]): DataSet[Triple]
* 17.
* 17. Literals criterion
- triples
Dataset of triples
- returns
number of triples that are referencing literals to subjects.
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logger: Logger
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notifyAll(): Unit
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def
print(stats: DataSet[String], source: String): Unit
Prints the Voidiy version of the given RDF dataset
Prints the Voidiy version of the given RDF dataset
- stats
given RDF dataset statistics
- source
name of the Dataset:source--usualy the file's name
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def
run(triples: DataSet[Triple]): DataSet[String]
Compute distributed RDF dataset statistics.
Compute distributed RDF dataset statistics.
- triples
DataSet graph
- returns
VoID description of the given dataset
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def
sameAs(triples: DataSet[Triple]): DataSet[Triple]
25.
25. SameAs criterion.
- triples
DataSet of triples
- returns
list of triples with owl#sameAs as predicate
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def
toString(): String
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def
typedSubjects(triples: DataSet[Triple]): DataSet[Node]
24.
24. Typed subjects criterion.
- triples
DataSet of triples
- returns
list of typed subjects.
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def
voidify(stats: DataSet[String], source: String, output: String): Unit
Voidify RDF dataset based on the Vocabulary of Interlinked Datasets (VoID) https://www.w3.org/TR/void/
Voidify RDF dataset based on the Vocabulary of Interlinked Datasets (VoID) https://www.w3.org/TR/void/
- stats
given RDF dataset statistics
- source
name of the Dataset:source--usualy the file's name
- output
the directory to save RDF dataset summary
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