A presentation on linked data for the Ancient World.

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