The document discusses metadata provenance and proposes a model for tracking the provenance of metadata using named graphs and semantic web technologies. Key elements of the proposed model include using named graphs to represent different metadata sources, tracking the source and confidence value of metadata using semantic triples, and executing SPARQL queries to retrieve metadata based on provenance information like source or confidence value.

1. Towards Interoperable
Metadata Provenance

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http://www.dublincore.org/groups/provenance/
http://wiki.bib.uni-mannheim.de/dc-provenance/

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http://dublincore.org/documents/dc-rdf/
Title
Subject
Description
Creator
Publisher
Contributor
Date
Type
Format
Identier
Source
Language
Relation
Coverage
Rights
"The mission of the DCMI is to provide
simple standards to facilitate the nding,
sharing and management of information."

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Title
Subject
Description
Creator
Publisher
Contributor
Date
Type
Format
Identier
Source
Language
Relation
Coverage
Rights
* http://www4.wiwiss.fu-berlin.de/lodcloud/state/#terms
http://data.bib.uni-mannheim.de

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http://www.w3.org/TR/swbp-n-aryRelations/

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title: Animal Farm
creator: George Orwell
year: 1993
isbn: 978-1857151503
subject: animals
Indexer: "My confidence
in the assignment is 0.91."
subject: communism
Librarian: "I assign
this subject."

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http://www.europeana.eu

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7 ex:docbase/doc1 dc:subject ex:thes/sub30
8 #7 ex:source ex:sources/pfeffer
9 #7 ex:rank 1.0

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Set Subject Predicate Object
1 ex:docbase/doc1 dc:subject ex:thes/sub20
2 #1 ex:source ex:sources/autoindex1
3 # 1 ex:rank 0.55
4 ex:docbase/doc1 dc:subject ex:thes/sub30
5 #4 ex:source ex:sources/autoindex1
6 #4 ex:rank 0.8
7 ex:docbase/doc1 dc:subject ex:thes/sub30
8 #7 ex:source ex:sources/pfeffer
9 #7 ex:rank 1.0
10 ex:docbase/doc1 dc:subject ex:thes/sub40
11 #10 ex:source ex:sources/pfeffer
12 #10 ex:rank 1.0
13 ex:sources/autoindex1 ex:type ex:types/auto
14 ex:sources/pfeffer ex:type ex:types/manual

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ex:thes/sub30
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ex:docbase/doc1 dc:subject ex:thes/sub30

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SELECT DISTINCT ?document ?value
WHERE {
GRAPH ?graph { ?document dc:subject ?value . } .
?graph ex:source <ex:sources/pfeffer> .
}
document value
ex:docbase/doc1 ex:thes/sub30
ex:docbase/doc1 ex:thes/sub40

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SELECT DISTINCT ?document ?value
WHERE {
GRAPH ?graph { ?document dc:subject ?value . } .
?graph ex:source ?source .
?source ex:type ?type .
?graph ex:rank ?rank .
FILTER ( ?type = <ex:types/manual> || ?rank > 0.7 )
}
document value
ex:docbase/doc1 ex:thes/sub30
ex:docbase/doc1 ex:thes/sub40

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