Bibliotek-o to BIBFRAME is a lossy RDF to RDF conversion where a significant portion of the data will remain the same (things in the bf: namespace). It thus seems that SPARQL UPDATE to delete bibliotek-o triples and replace them with BIBFRAME equivalent would be a good approach?

The conversion is lossy because bibliotek-o is more expressive than BIBFRAME.

The Python make_bteko2bf_sparql.py program is designed to write a SPARQL UPDATE script bteko2bf.ru based on data from bibliotek-o to BIBFRAME mappings. Generate with:

> python make_bteko2bf_sparql.py -v
INFO:root:Done, written 90 mappings to bteko2bf.ru

Assuming the SPARQL UPDATE code is bteko2bf.ru, one can run it on a bibliotek-o file testdata/ex_listingCredits_1_bteko.ttl with:

> update --dump --data=testdata/ex_listingCredits_1_bteko.ttl --update=bteko2bf.ru
<http://example.org/obj1> <http://id.loc.gov/ontologies/bibframe/credits> "Credit" .

the output BIBFRAME is written to STDOUT (just one triple in this example).

See for notes on running SPARQL UPDATE as a command-line tool. There are also notes about running against a Fuseki triplestore server.

The program test_bteko2bf_sparql.py uses the Python unittest framework to run tests against all examples *_bteko.ttl -> *_bf.ttl in the testdata directory. Run with:

> python test_bteko2bf_sparql.py 
.
----------------------------------------------------------------------
Ran 1 test in 3.018s

OK

The code is designed to run with Python3.5 or higher.

The tests rely on Apache Jena tools, on OSX these can be installed with homebrew:

> brew install jena

I'm not sure how sensitive any of this is to version on Jena. Developement has been done against 3.1.0:

> update --version
Jena:       VERSION: 3.1.0
Jena:       BUILD_DATE: 2016-05-10T11:59:39+0000
ARQ:        VERSION: 3.1.0
ARQ:        BUILD_DATE: 2016-05-10T11:59:39+0000
RIOT:       VERSION: 3.1.0
RIOT:       BUILD_DATE: 2016-05-10T11:59:39+0000

and the travis tests run aginst 3.4.0 (as of 2017-08-07).

WARNING - Mappings currently work in progress, the versions here are an incomplete dump*

The directory vendor/bibliottek-o_bibframe_usage has TSV dumps of the current mapping spreadsheets from the LD4P bibliottek-o work. This will be updated when real/final mappings are published.