The document discusses linking portable antiquities data to other resources using semantic web technologies. It describes work done to link finds data to places in Pleiades and people in Nomisma using RDFa. It also discusses extracting entities from text using OpenCalais and mapping data to ontologies like CIDOC-CRM. Challenges around implementation include knowledge, resources, and choosing appropriate ontologies. The presentation provides examples of how the data has been enriched by linking to resources like Wikipedia, Geonames, and DBPedia.

1. Linked Portable
Antiquities data for
#LAWDI
Daniel Pett
dpett@britishmuseum.org
Links at: http://bit.ly/N3wlRv

2. Am I here by mistake?
My stuff is British focused.
But, I have Classical and
geodata….
You can try my β version http://beta.finds.org.uk

3. The Portable Antiquities Scheme
 First database online in 2001
 The HLF funded next iteration at £150K
 Holds data for over 750,000 objects
 Since 2006 developed entirely by speaker
 Huge open source cms for small finds
 Most recent iteration cost £48 + salary
 Online audience has grown 63% in last year
 Over ½ million visitors in 2012
 Annual budget of £4,000 for web production
 Resource for a niche audience
 Big stories get huge attention spike
 Over 1 million pages of html content and
similar machine readable

4. Frome (Somerset) Hoard

5. Crosby Garrett (Lancashire)
Helmet

7. Public recording of discovery:
Big Society model?
Citizen science?
Archaeological destruction?

9. <objects xsi:schemaLocation="http://www.heritage-
standards.org/midas/schema/1.0 http://www.heritage-
Multiple formats standards.org/midas/schema/1.0/midas_object.xsd">
<object>
<recordmetadata>
<created>
<createdon>2011-01-21 15:11:18</createdon>
<createdby>
<appellation>
<name>Frank Basford</name>
<identifier namespace="PAS">fbasford</identifier>
</appellation>
</createdby>
</created>
<lastupdated>
<lastupdatedon>2011-01-21 17:44:00</lastupdatedon>
<lastupdatedby>
<appellation>
<name>Frank Basford</name>
<identifier namespace="PAS">fbasford</identifier>
</appellation>
</lastupdatedby>
</lastupdated>
</recordmetadata>
{"recordID":"425728","finds":[{"created2":"2011 01 21","description":"<p>A
fragment of a post-Medieval cast copper-alloy 'crotal bell' (c. 1500-c. 1650).
The fragment is part of the lower hemisphere and the straight edge is one side
of the sound slit. The outer face has a 'fish scale' design that encloses a
maker's mark: S G. It has a shiny mid-green patina on the outer face and a
dull matt green patina on the inner face. The breaks are crisp. 54.9 x 37.7 x
2.1mm. Weight: 29.03g.</p>", ……..

10. Other resources – same object

11. Ringlemere gold cup

12. British Museum record

13. BM collection page
• It exists on the endpoint
• But I can’t find it….
• Challenge for Dominic to find it by end
of talk

14. OAI – PMH: UK databases

15. Linked data
 Who might our audience be?
 Low uptake by consumers
 Big impact for web resources
 Are we reinventing the wheel?

16. Barriers for implementation -
producers
 Knowledge
 Projects to emulate
 Staff resource
 Time
 Funding
 Too many ontologies to choose from….
 Lack of management buy-in and vision

17. Am I doing this right?
Doubts: Am I doing it right?

18. What I had hoped to show you:
 Finished website
 Attestations to Pleiades
 Partial linking to Nomisma
 RDFa through out all pages
 Content negotiation

19. Someone arrived 6 weeks early

20. Read Beck’s post here: http://bit.ly/KPTTXf

21. Geonames/
Geoplanet Interoperability/
enrichment
dbpedia PAS Amazon
Pleiades
Flickr Nomisma

22. What aspects can I link to?
 People
 Places – eg Pleiades places
 Time
 Events
 Citations/ references
 Museum objects eg all BM/ANS denarii
 Books

23. Enriched by Amazon via ISBN
I use the affiliate
programme in the
vain hope of us
making some
cash!
I could of course
link to open
bibliographic
projects.

24. Enriched data via dbPedia
{Prefixes omitted for space}
SELECT *
WHERE {
?emperor foaf:page<http://en.wikipedia.org/wiki/Augustus> .
OPTIONAL {?emperor dbpedia-owl:abstract ?abstract} .
OPTIONAL {? emperor foaf:depiction ?depiction} .
OPTIONAL {? emperor dbpedia-owl:thumbnail ?thumb} .
OPTIONAL {? emperor dbpedia2:imgw ?imgw} .
?emperor foaf:page ?page.
FILTER langMatches( lang(?abstract), "en")
}
LIMIT 1 Keep Calm riffed image:
http://johnwright.me/blog/sparql-query-
in-code-rest-php-and-json-tutorial/

25. http://bit.ly/JxyGhM for example

26. Implemented the AWLD magic script

27. Friend of a friend implementation
Example at: http://bit.ly/JxzHGK

28. Rdfa implementation
xmlns="http://www.w3.org/1999/xhtml"
xmlns:foaf="http://xmlns.com/foaf/0.1/"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:batlas="http://atlantides.org/batlas/"
xmlns:gml="http://www.opengis.net/gml/"
xmlns:nm="http://nomisma.org/id/"
xmlns:ov="http://open.vocab.org/terms/"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:skos="http://www.w3.org/2008/05/skos#"
xmlns:pas="http://beta.finds.org.uk/rdf/"
xmlns:google="http://rdf.data-vocabulary.org/#"
xmlns:con="http://www.w3.org/2000/10/swap/pim/contact#"
xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"
xmlns:c="http://s.opencalais.com/1/pred/"
xmlns:bibo="http://purl.org/ontology/bibo/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:units="http://qudt.org/"
xmlns:og="http://ogp.me/ns#"
xmlns:fb="http://www.facebook.com/2008/fbml"
xml:lang="en”

29. Geodata entity extraction
Using YQL:
http://y.ahoo.it/SY1rb
Parse body of text
Extract all geo entities
Can be concorded to
geonames ->pleiades
How to:
http://bit.ly/JxxMSw

30. Linked geo data

31. Power of WOEID

32. Entity extraction
 One can extract personal names, places, concepts,
relations, positions via OpenCalais
 Try this via http://viewer.opencalais.com/
 Paste in text and submit for analysis
 I do this via curl in a php script per page

33. Objects referencing place:
The Staffordshire Moorlands trulla
This is a list of four forts located at the western end of Hadrian's Wall;
Bowness (MAIS), Drumburgh (COGGABATA), Stanwix
(UXELODUNUM) and Castlesteads (CAMMOGLANNA). it
incorporates the name of an individual, AELIUS DRACO and a further
place-name, RIGOREVALI.
http://www.finds.org.uk/database/artefacts/record/id/49791

34. Entities
extracted as rdf
You can try this at
http://bit.ly/Jxy0ZG

35. Wikipedia seeding
Enabled by releasing content and data under a Creative Commons
licence

36. URI design patterns
 http://finds.org.uk/database/artefacts/record/id/<id>/format/(rdf | json | csv | xml |
kml)
 http://finds.org.uk/contacts/staff/profile/id/<id>/format/( (rdf | json | csv | xml)
 http://finds.org.uk/romancoins/personifications/named/as/Diana
 http://finds.org.uk/treasure/advice/adviceonbuying

37. Mapping to CIDOC
 Academic research has been done
 University of Vienna paper - http://bit.ly/KPSboz

38. http://www.dayofarchaeology.com

39. The end
Email: dpett@britishmuseum.org
Twitter: @portableant | @findsorguk
Telephone: +44 (0) 207 323 8618
Web: http://finds.org.uk
Flickr: http://flickr.com/finds
Facebook: http://facebook.com/portableantiquitiesscheme
Pinterest: http://pinterest.com/findsorguk