Would an Explicit Versioning of the DDC Bring Advantages for Retrieval?

1
Would an Explicit Versioning of the DDC Bring
Advantages for Retrieval?
1

• Claudia Effenberger, Julia Hauser

2
The DDC is constantly changing
2
726 Buildings for religious and related
purpose 726.7 Monastic buildings 726.79 Parts
and accessory structures Including cells,
cloisters, refectories 726.796 Cloisters Class
here comprehensive works on cloisters formerly
726.69
3
3
It is not possible to review the correctness of
DDC notations
PICA 3 3000 Legler, Rolf 4000 Mittelalterliche
Kreuzgänge in Europa 5400 DDC22ger726.79
New subordinated class
3000 Legler, Rolf 4000 Mittelalterliche
Kreuzgänge in Europa 5400 DDC22ger726.796
4
The modifications can lead to incomplete search
results
4
5
In spite of the modification thesearch result
should be correct
5
?
?
?
?
?
!
?
6
We create identifiers for each version of the DDC
classes and a Semantic Network for searching
6
Title
Title
dcsubject
dcsubject
dctreplaces
DDC class identifier
DDC class identifier
dctisReplacedBy
skosbroadMatch 2007-01-01 2010-06-16
dcsubject
dcsubject
skosbroader
skosnarrower
skoscloseMatch 2010-06-16
Subject Heading
DDC class identifier
Title
dcsubject
dcsubject
Title
Title
7
Each version of a DDC class getsa unique
identifier
7
http//dewey/info/class/726.796/2009/03/30/
8
Through the identifier we can differentiate
between the versions
8
726.79 Parts and accessory structures Including
cells, cloisters, refectories 2005-11-02
http//dewey/info/class/ 726.79/2005/11/02/ htt
p//dewey/info/class/ 726.79/2009/03/30/ http/
/dewey/info/class/ 726.796/2009/03/30/
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
9
Because of the versioning we can identify the
meaning of a DDC class
9
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/
Mittelalterliche Kreuzgänge in Europa 2008-02
Infirmarien Kranken- und Sterbehäuser der
Mönche 2010-02
Die singenden Steine von Moissac 2010-03
10
We have to save the version of a DDC class in
the descriptive entry
10
PICA 3 3010 Legler, Rolf 4000 Mittelalterliche
Kreuzgänge in Europa 5400 DDC22ger726.79 5401 72
6.792005-11-022009-03-30
3010 Straub, Rainer 4000 Die singenden Steine von
Moissac 5400 DDC22ger726.796094475 5401 726.796
2009-03-30
11
We model the relations as a Semantic Network
11
Kloster Wedinghausen Westflügel 2008-03
Infirmarien Kranken- und Sterbehäuser der
Mönche 2010-02
dcsubject
dcsubject
726.79 Parts and accessory structures Including
cells, refectories 2009-03-30
726.79 Parts and accessory structures Including
cells, cloisters, refectories 2005-11-02
2009-03-30
dctreplaces
dctisReplacedBy
skosbroader
dcsubject
dcsubject
skosbroadMatch 2007-01-01 2010-06-16
skosnarrower
726.796 Cloisters Class here comprehensive works
on cloisters formerly 726.69 2009-03-30
skoscloseMatch 2010-06-16
Cloister
Der Kreuzgang der Abtei Altenryf 2008-01
dcsubject
dcsubject
Mittelalterliche Kreuzgänge in Europa 2008-02
Die singenden Steine von Moissac 2010-03
12
Search without versioning and Semantic Network
12
Kloster Wedinghausen Westflügel 2008-03
Infirmarien Kranken- und Sterbehäuser der
Mönche 2010-02
726.79 Parts and accessory structures Including
cells, (cloisters), refectories
?
?
726.796 Cloisters Class here comprehensive works
on cloisters formerly 726.69
Cloister
Der Kreuzgang der Abtei Altenryf 2008-01
?
Mittelalterliche Kreuzgänge in Europa 2008-02
?
Die singenden Steine von Moissac 2010-03
Die singenden Steine von Moissac 2010-03
?
?
?
13
Search with versioning and Semantic Network
13
Kloster Wedinghausen Westflügel 2008-03
Infirmarien Kranken- und Sterbehäuser der
Mönche 2010-02
dcsubject
dcsubject
726.79 Parts and accessory structures Including
cells, refectories 2009-03-30
726.79 Parts and accessory structures Including
cells, cloisters, refectories 2005-11-02
2009-03-30
dctreplaces
dctisReplacedBy
skosbroader
dcsubject
dcsubject
skosbroadMatch 2007-01-01 2010-06-16
skosnarrower
!
!
726.796 Cloisters Class here comprehensive works
on cloisters formerly 726.69 2009-03-30
skoscloseMatch 2010-06-16
Cloister
Der Kreuzgang der Abtei Altenryf 2008-01
Der Kreuzgang der Abtei Altenryf 2008-01
!
dcsubject
dcsubject
Mittelalterliche Kreuzgänge in Europa 2008-02
Mittelalterliche Kreuzgänge in Europa 2008-02
!
Die singenden Steine von Moissac 2010-03
Die singenden Steine von Moissac 2010-03
!
!
!
14
There can be irrelevant documentsin the search
results
14
?
?
?
?
Kloster Wedinghausen Westflügel 2008-03
Infirmarien Kranken- und Sterbehäuser der
Mönche 2010-02
?
dcsubject
dcsubject
726.79 Parts and accessory structures Including
cells, refectories 2009-03-30
726.79 Parts and accessory structures Including
cells, cloisters, refectories 2005-11-02
2009-03-30
dctreplaces
dctisReplacedBy
skosbroader
dcsubject
dcsubject
skosbroadMatch 2007-01-01 2010-06-16
skosnarrower
726.796 Cloisters Class here comprehensive works
on cloisters formerly 726.69 2009-03-30
skoscloseMatch 2010-06-16
Cloister
Der Kreuzgang der Abtei Altenryf 2008-01
dcsubject
dcsubject
Mittelalterliche Kreuzgänge in Europa 2008-02
Die singenden Steine von Moissac 2010-03
15
The modifications in the DDC can lead to
incomplete search results
15
16
In spite of the modification thesearch result
should be correct
16
17
Identifier and a Semantic Network for better
search results
17
Kloster Wedinghausen Westflügel 2008-03
Infirmarien Kranken- und Sterbehäuser der
Mönche 2010-02
dcsubject
dcsubject
726.79 Parts and accessory structures Including
cells, refectories 2009-03-30
726.79 Parts and accessory structures Including
cells, cloisters, refectories 2005-11-02
2009-03-30
dctreplaces
dctisReplacedBy
skosbroader
dcsubject
dcsubject
skosbroadMatch 2007-01-01 2010-06-16
skosnarrower
726.796 Cloisters Class here comprehensive works
on cloisters formerly 726.69 2009-03-30
skoscloseMatch 2010-06-16
Cloister
Der Kreuzgang der Abtei Altenryf 2008-01
Der Kreuzgang der Abtei Altenryf 2008-01
dcsubject
dcsubject
Mittelalterliche Kreuzgänge in Europa 2008-02
Mittelalterliche Kreuzgänge in Europa 2008-02
Die singenden Steine von Moissac 2010-03
Die singenden Steine von Moissac 2010-03
18
18
Thank you for your attention! c.effenberger_at_d-nb
.de j.hauser_at_d-nb.de