Transcript Claudia Effenberger, Julia Hauser Would an Explicit Versioning of the DDC Bring Advantages for Retrieval? 1 | 18 | Concepts in Context |

Claudia Effenberger, Julia Hauser
Would an Explicit Versioning of the
DDC Bring Advantages for Retrieval?
1 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
The DDC is constantly changing
726
726.7
Buildings for religious and related purpose
Monastic buildings
726.79
Parts and accessory structures
Including cells, cloisters, refectories
726.796
Cloisters
Class here comprehensive works on
cloisters [formerly 726.69]
2 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
It is not possible to review the
correctness of DDC notations
PICA 3
3000
4000
5400
Legler, Rolf
Mittelalterliche Kreuzgänge in Europa
[DDC22ger]726.79
New subordinated
class
3000
4000
5400
Legler, Rolf
Mittelalterliche Kreuzgänge in Europa
[DDC22ger]726.796
3 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
The modifications can lead to
incomplete search results
4 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
In spite of the modification the
search result should be correct
?
?
?
!
ddc=
726.79*
?
?
5 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
?
We create identifiers for each
version of the DDC classes and a
Semantic Network for searching
Title
Title
dc:subject
dc:subject
dct:replaces
DDC class identifier
DDC class identifier
dct:isReplacedBy
skos:broadMatch
[2007-01-01]
{2010-06-16}
skos:broader
skos:narrower
DDC class identifier
skos:closeMatch
[2010-06-16]
dc:subject
Subject
Heading
Title
dc:subject
dc:subject
Title
6 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
dc:subject
Title
Each version of a DDC class gets
a unique identifier
726.796
Cloisters
Class here comprehensive works
on cloisters [formerly 726.69]
[2009-03-30]
http://dewey/info/class/726.796/2009/03/30/
7 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
Through the identifier we can
differentiate between the versions
726.79
Parts and accessory structures
Including cells, cloisters, refectories
[2005-11-02]
726.79
Parts and accessory structures
Including cells, refectories
[2009-03-30]
726.796
Cloisters
Class here comprehensive works
on cloisters [formerly 726.69]
[2009-03-30]
8 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
http://dewey/info/class/
726.79/2005/11/02/
http://dewey/info/class/
726.79/2009/03/30/
http://dewey/info/class/
726.796/2009/03/30/
Because of the versioning we can
identify the meaning of a DDC class
Mittelalterliche Kreuzgänge
in Europa [2008-02]
http://dewey/info/class/
726.79/2005/11/02/
Infirmarien – Krankenund Sterbehäuser der
Mönche [2010-02]
http://dewey/info/class/
726.79/2009/03/30/
Die singenden Steine von
Moissac [2010-03]
http://dewey/info/class/
726.796/2009/03/30/
9 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
We have to save the version of a
DDC class in the descriptive entry
PICA 3
3010
4000
5400
5401
Legler, Rolf
Mittelalterliche Kreuzgänge in Europa
[DDC22ger]726.79
726.79[2005-11-02]{2009-03-30}
3010
4000
5400
5401
Straub, Rainer
Die singenden Steine von Moissac
[DDC22ger]726.796094475
726.796[2009-03-30]
10 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
We model the relations as a
Semantic Network
Kloster Wedinghausen
– Westflügel [2008-03]
Infirmarien – Kranken- und
Sterbehäuser der Mönche [2010-02]
dc:subject
dc:subject
726.79
Parts and accessory structures
Including cells, refectories
[2009-03-30]
skos:broader
Parts and accessory structures
dct:isReplacedBy
Cloisters
Class here comprehensive works
on cloisters [formerly 726.69]
Including cells, cloisters, refectories
[2005-11-02] {2009-03-30}
skos:broadMatch
[2007-01-01]
{2010-06-16}
skos:narrower
726.796
726.79
dct:replaces
skos:closeMatch
[2010-06-16]
[2009-03-30]
dc:subject
dc:subject
Die singenden Steine von Moissac [2010-03]
11 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
Cloister
dc:subject
dc:subject
Der Kreuzgang
der Abtei Altenryf
[2008-01]
Mittelalterliche Kreuzgänge
in Europa [2008-02]
Search without versioning and
Semantic Network
Kloster Wedinghausen
– Westflügel [2008-03]
Infirmarien – Kranken- und
Sterbehäuser der Mönche [2010-02]
726.79
Parts and accessory structures
Including cells, (cloisters),
refectories
ddc=
726.796
Cloisters
Class here comprehensive works
on cloisters
[formerly 726.69]
Die singenden Steine von Moissac [2010-03]
12 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
?
?
726.796
Cloister
?
?
Der Kreuzgang
der Abtei Altenryf
[2008-01]
Mittelalterliche Kreuzgänge
in Europa [2008-02]
?
?
?
Search with versioning and
Semantic Network
Kloster Wedinghausen
– Westflügel [2008-03]
Infirmarien – Kranken- und
Sterbehäuser der Mönche [2010-02]
dc:subject
dc:subject
726.79
Parts and accessory structures
Including cells, refectories
[2009-03-30]
skos:broader
ddc=
726.796
Parts and accessory structures
dct:isReplacedBy
Cloisters
Class here comprehensive works
on cloisters [formerly 726.69]
Including cells, cloisters, refectories
[2005-11-02] {2009-03-30}
skos:broadMatch
[2007-01-01]
{2010-06-16}
skos:narrower
726.796
726.79
dct:replaces
skos:closeMatch
[2010-06-16]
[2009-03-30]
Cloister
dc:subject
dc:subject
Die singenden Steine von Moissac [2010-03]
13 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
!
!
dc:subject
dc:subject
!
!
Der Kreuzgang
der Abtei Altenryf
[2008-01]
Mittelalterliche Kreuzgänge
in Europa [2008-02]
!
!
!
There can be irrelevant documents
in the search results
?
Infirmarien – Kranken- und
Sterbehäuser der Mönche [2010-02]
?
dc:subject
726.79
Including cells, refectories
[2009-03-30]
skos:broader
ddc=
726.796
Cloisters
Class here comprehensive works
on cloisters [formerly 726.69]
?
dc:subject
726.79
Parts and accessory structures
dct:isReplacedBy
Including cells, cloisters, refectories
[2005-11-02] {2009-03-30}
skos:broadMatch
[2007-01-01]
{2010-06-16}
skos:narrower
726.796
Kloster Wedinghausen
– Westflügel [2008-03]
dct:replaces
Parts and accessory structures
?
?
skos:closeMatch
[2010-06-16]
[2009-03-30]
dc:subject
dc:subject
Die singenden Steine von Moissac [2010-03]
14 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
Cloister
dc:subject
dc:subject
Der Kreuzgang
der Abtei Altenryf
[2008-01]
Mittelalterliche Kreuzgänge
in Europa [2008-02]
The modifications in the DDC can
lead to incomplete search results
15 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
In spite of the modification the
search result should be correct
16 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
Identifier and a Semantic Network
for better search results
Kloster Wedinghausen
– Westflügel [2008-03]
Infirmarien – Kranken- und
Sterbehäuser der Mönche [2010-02]
dc:subject
dc:subject
726.79
Parts and accessory structures
Including cells, refectories
[2009-03-30]
skos:broader
ddc=
726.796
Parts and accessory structures
dct:isReplacedBy
Cloisters
Class here comprehensive works
on cloisters [formerly 726.69]
Including cells, cloisters, refectories
[2005-11-02] {2009-03-30}
skos:broadMatch
[2007-01-01]
{2010-06-16}
skos:narrower
726.796
726.79
dct:replaces
skos:closeMatch
[2010-06-16]
[2009-03-30]
dc:subject
dc:subject
Die singenden Steine von Moissac [2010-03]
17 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010
Cloister
dc:subject
dc:subject
Der Kreuzgang
der Abtei Altenryf
[2008-01]
Mittelalterliche Kreuzgänge
in Europa [2008-02]
Thank you for your attention!
[email protected]
[email protected]
18 | 18 | Concepts in Context | Versioning of the DDC | July 19, 2010