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BM extensions to CRM

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BMX Description

Developed by Seme4 as part of BM collection data mapping to RDF in the CRM schema
D2 - Commentary on the mapping process- from BM to CIDOC-CRM.pdf, Hugh Glaser, SotonU

D1 - BM to ResearchSpace- Conversion Process and Schema.pdf, Ian Millard, Seme4. "Recommended process for converting data from a Collections Management System in the Cultural Heritage domain into Open Linked Data"

  • demonstrate feasibility for converting the entire Collections data from the British Museum into Linked Data
  • Describes the developed ETL tool "makeRDF": based on config files, uses xpath, similar to xslt but simpler
  • nice intro to CRM
  • recommended URI allocation:
    http://collection.britishmuseum.org/object/PPA1818832 : artifact (non information resource)
    http://collection.britishmuseum.org/object/PPA1818832.html : html representation (information resource for humans)
    http://collection.britishmuseum.org/object/PPA1818832.rdf : rdf representation (information resource for computers)
    http://collection.britishmuseum.org/object/PPA1818832/production : info about production (who when where created it)
    etc
  • 14Gb of XMLs exported from BM's collection system (Merlin). Took several weeks (SSL says it'd have been faster if they knew better)
  • Merlin is a C/C++ system with a proprietary OO database
  • BM has 2M objects, 560k of them have images. The CRM RDF has maybe 100 triples per object
  • RDF takes between 12 and 24 hours to assert depending on the triple store employed
  • BM's Merlin model is based on the SPECTRUM standard for Museum Documentation. The functionality of other museum collection systems is also based on SPECTRUM

BMX ontology definition

  • [^bm-extensions.ttl]. It's RDFS only, not OWL
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