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Folie 1

The catalogue

The Theological Subject Headings Catalogue for Gender Studies is a datasource, which focuses on Feminist Theology and Gender Studies.

Articles, books and journals along with many online full-texts can be found grouped under approx. 7.500 subject headings

Currently we are working on making it searchable in Solr and making its subject headings and bibliographic metadata available as Linked Open Data

The clean up

There was an old version of the catalogue, containing much (16.000 titles), but rather messy data

We cleaned up, organizing the subject headings in 5 categories:Topics

Temporals

Geographicals

Persons

Scripture Citations

Organizing the subject headings

For each category (except Persons) we built a thesaurus, organizing the subject headings among each other and linked them to dbpedia

Using SKOS as the main vocabulary for the topical subject headings, we got resources looking like this:

Organizing the subject headings (topicals)

a skos:Collection;skos:member ;

a skos:Concept; skos:inScheme ; skos:prefLabel "Homosexualitt"@de; skos:broader ;

owl:sameAs .

skos:related .

Mapping problems

For the non-topical subject headings, SKOS was used for naming the collections: a skos:Collection; skos:member

We made the geographicals to a skos:concept and a skos:member of our collection, then linked them to geonames (and dbpedia) with owl:sameAs, planning to harvest information like a is a city in country b automatically

For building thesaurus structures with the temporals, we looked for alternative ontologies, finally using cidoc-crm, getting resources like:

a skos:Concept;

a crm:E55_Type;

a crm:E4_Period;

skos:inScheme ;

skos:prefLabel "19. Jahrhundert"@de;

owl:sameAs ;

crm:P120i_occurs_after ;

crm:P120_occurs_before .

The personal subject headings

We further differentiated the personal subject headings in real/historical persons and biblical persons (not implemented in the catalogue yet).

So for each personal subject heading we had to note that the entity is a person and for some that the person is a biblical figure.

This time we used CRM again, plus the ontology of the German National Library's linked data service, which provides the type biblical person that just has to be marked as a crm:E55_Type and added to the person-attribute if the subject heading names a biblical person:

The Personal subject headings

a crm:E55_Type.

a crm:E21_Person.crm:P2_has_type .

owl:sameAs .

The new version of the catalogue

Currently, the catalogue contains about 800 titles, plus their subject headings

We have not set up a triple store yet, neither have we implemented a browsable thesaurus but we are working on having it ready by the end of the year.

Bibliographic metadata will be available as FRBRoo. We're working on that too...

Nevertheless we already now benefit from linked data:

The benefits

The search engine can deal with queries in every language listed in the respective dbpedia resource as rdfs:label, even things like (church)

The search engine expands queries containing keywords mentioned in the dbpedia-owl:abstract

A short demonstration

http://femtheol.ub.rub.de/

Thanks for your attention!

For more information mail to: [email protected]

Image on slide 9 by Dieter Schtz, pixelio.de

Image on slide 3 by w.r.wagner, pixelio.de Philipp Baar

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Universittsbibliothek Bochum

University Library / Theological FacultiesThe Theological Subject Headings Catalogue for Gender Studies

2012-12-26Philipp Baar