This document describes a project to enhance library metadata by linking it to linked data of Irish place names. The project involved converting an Irish place name database to RDF, linking it to datasets like DBpedia, GeoNames and LinkedGeoData using Silk, and integrating the linked data into the metadata of a map collection to allow searching by Irish place names. The results showed high accuracy in the links identified. Future work involves improving the linking and integrating it further into the library catalog system.

1. Digital Enterprise Research Institute www.deri.ie
Enabling networked knowledge
Linked Logainm: Enhancing Library Metadata
using Linked Data of Irish Place Names
Nuno Lopes Rebecca Grant Brian Ó Raghallaigh Eoghan Ó
Carragáin Sandra Collins Stefan Decker
September 26, 2013

2. logainm.ie
The authority list of Irish place
names, validated by the
Placenames Branch.
Delivering a more detailed level
than in DBpedia, Geonames.
Unique source of Irish language
place names
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3. logainm.ie
The authority list of Irish place
names, validated by the
Placenames Branch.
Delivering a more detailed level
than in DBpedia, Geonames.
Unique source of Irish language
place names
But.. not easily accessible
automatically
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4. The NLI Longfield Map Collection
The Longfield Maps are a set of 1,570 surveys carried out in
Ireland between 1770 and 1840.
Currently catalogued in MarcXML
Integrating Logainm data into their workflow:
for enabling searching for place names in Irish
using Linked Data
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5. Longfield Map example
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6. Longfield Map example
MARC/XML
<marc:datafield tag="650" ind1="" ind2="">
<marc:subfield code="a">Land tenure</marc:subfield>
<marc:subfield code="z">Ireland</marc:subfield>
<marc:subfield code="z">Rathdown (Barony)</marc:subfield>
</marc:datafield>
<marc:datafield tag="650" ind1="" ind2="">
<marc:subfield code="a">Land use surveys</marc:subfield>
<marc:subfield code="z">Ireland</marc:subfield>
<marc:subfield code="z">Wicklow (County)</marc:subfield>
</marc:datafield>
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7. Approach for creating the dataset
1 Translate Logainm database dump into RDF
2 Determine links to other datasets based on:
Place names
Type
Geographical coordinates
Hierarchy of places
3 Evaluation of generated links
4 Library catalogue enhancement
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8. Overview of GLD
Providers:
DBpedia
Exported from Wikipedia
LinkedGeoData
Exported from
OpenStreetMap
GeoNames
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9. Overview of GLD
Providers:
DBpedia
Exported from Wikipedia
LinkedGeoData
Exported from
OpenStreetMap
GeoNames
GeoLinkedData
Ordnance Survey
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10. Overview of GLD
Providers:
DBpedia
Exported from Wikipedia
LinkedGeoData
Exported from
OpenStreetMap
GeoNames
GeoLinkedData
Ordnance Survey
Vocabularies:
W3C Geo
SpatialThing
NeoGeo
Feature vs Geometry
Spatial Relations
(is_part_of)
Most providers define their own
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11. 1. Converting Logainm dump to RDF
SPA QL
M
L
X
D
F
R
∼ 1.3M triples
Data provided in XML
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12. 1. Converting Logainm dump to RDF
SPA QL
M
L
X
D
F
R
∼ 1.3M triples
Data provided in XML
Translated to RDF using XSPARQL
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13. 1. Converting Logainm dump to RDF
SPA QL
M
L
X
D
F
R
∼ 1.3M triples
Data provided in XML
Translated to RDF using XSPARQL
Exposed using Openlink Virtuoso
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14. Linked Logainm
http://lod-cloud.net/
Government
Media
User-generated
Publications
Life sciences
Cross-domain
GeoLogainm
OCLC FAST
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15. Linked Logainm
http://lod-cloud.net/
Government
Media
User-generated
Publications
Life sciences
Cross-domain
GeoLogainm
OCLC FAST
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16. Linked Logainm
http://lod-cloud.net/
Government
Media
User-generated
Publications
Life sciences
Cross-domain
GeoLogainm
OCLC FAST
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17. 2. Place name matching using Silk
1 Place Name
Island, Cavan: 2641 "Place"s in
DBpedia
Airport, Dublin: 7828
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18. 2. Place name matching using Silk
1 Place Name
Island, Cavan: 2641 "Place"s in
DBpedia
Airport, Dublin: 7828
2 Geographical Location
∼50% of place names in logainm
contain geographical information
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19. 2. Place name matching using Silk
1 Place Name
Island, Cavan: 2641 "Place"s in
DBpedia
Airport, Dublin: 7828
2 Geographical Location
∼50% of place names in logainm
contain geographical information
3 Name of the county / parent place
name
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20. 2. Place name matching using Silk
1 Place Name
Island, Cavan: 2641 "Place"s in
DBpedia
Airport, Dublin: 7828
2 Geographical Location
∼50% of place names in logainm
contain geographical information
3 Name of the county / parent place
name
4 Mapping of types from Logainm to
types in other datasets
logainm.ie DBpedia LinkedGeoData Geonames
townland
Populated
Place
Locality
LCTY,
PPLF
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21. 3. Silk results
Entities IE # Links % Links
DBpedia1 10,715 1,552 14.5
LinkedGeoData2 36,237 6,611 18
GeoNames3 23,102 8,229 35.5
1
Entities of type “Place” or “Feature”
2
Entities of type “Node”
3
No hierarchy info
4
Including internal & Freebase links
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22. 3. Silk results
Entities IE # Links % Links
DBpedia1 10,715 1,552 14.5
LinkedGeoData2 36,237 6,611 18
GeoNames3 23,102 8,229 35.5
Links in other datasets
Entities # Links % Links
DBpedia 873,643 653,7074 74.84
LinkedGeoData 6,251,067 462,098 7,4
1
Entities of type “Place” or “Feature”
2
Entities of type “Node”
3
No hierarchy info
4
Including internal & Freebase links
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23. Evaluation Results
Links Checked Correct
DBpedia 1,552 1,552 (100%) 98%
LinkedGeoData 6,611 500 (7.5%) 96%
GeoNames 8,229 500 (6%) 99%
Same place names can be “towns”, “population centre”, and
“townland” in logainm.ie. DBpedia contains only one entry:
Adrigole (population centre) and Adrigole (townland)
http://dbpedia.org/resource/Adrigole
Similar for LinkedGeoData
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24. Longfield Map example (Updated)
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25. Longfield Map example (Updated)
<marc:datafield tag="650" ind1="" ind2="">
<marc:subfield code="a">Land tenure</marc:subfield>
<marc:subfield code="z">Ireland</marc:subfield>
<marc:subfield code="z">Rathdown (Barony)</marc:subfield>
</marc:datafield>
<marc:datafield tag="650" ind1="" ind2="">
<marc:subfield code="a">Land use surveys</marc:subfield>
<marc:subfield code="z">Ireland</marc:subfield>
<marc:subfield code="z">Wicklow (County)</marc:subfield>
</marc:datafield>
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26. Longfield Map example (Updated)
<marc:datafield tag="650" ind1="" ind2="">
<marc:subfield code="a">Land tenure</marc:subfield>
<marc:subfield code="z">Ireland</marc:subfield>
<marc:subfield code="z">Rathdown (Barony)</marc:subfield>
</marc:datafield>
<marc:datafield tag="650" ind1="" ind2="">
<marc:subfield code="a">Land use surveys</marc:subfield>
<marc:subfield code="z">Ireland</marc:subfield>
<marc:subfield code="z">Wicklow (County)</marc:subfield>
</marc:datafield>
<marc:datafield tag="650" ind1="" ind2="">
<marc:subfield code="a">Land tenure</marc:subfield>
<marc:subfield code="z">Ireland</marc:subfield>
<marc:subfield code="z">Rathdown (Barony)</marc:subfield>
</marc:datafield>
<marc:datafield tag="650" ind1="" ind2="">
<marc:subfield code="a">Land use surveys</marc:subfield>
<marc:subfield code="z">Ireland</marc:subfield>
<marc:subfield code="z">Wicklow (County)</marc:subfield>
</marc:datafield>
<marc:datafield tag="651" ind2="7" ind1="">
<marc:subfield code="2">logainm.ie</marc:subfield>
<marc:subfield code="a">Rathdown</marc:subfield>
<marc:subfield code="0">http://data.logainm.ie/place/283</marc:s
</marc:datafield>
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27. Demo page:
http://apps.dri.ie/locationLODer
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28. Conclusions
Creation of a new Linked Data geographical Dataset
Linking to other publicly available datasets
Enhancing of NLI’s MARC/XML records
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29. Conclusions
Creation of a new Linked Data geographical Dataset
Linking to other publicly available datasets
Enhancing of NLI’s MARC/XML records
Future work
Improve the Silk matching rules to obtain better matching
Street level matching
Enhancing the NLI’s cataloguing system (VuFind)
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30. Conclusions
Creation of a new Linked Data geographical Dataset
Linking to other publicly available datasets
Enhancing of NLI’s MARC/XML records
Future work
Improve the Silk matching rules to obtain better matching
Street level matching
Enhancing the NLI’s cataloguing system (VuFind)
Thank you! Questions?
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