On 6 August 2015 at 16:28, Davis, Daniel (NIH/NLM) [C] daniel.da...@nih.gov
wrote:
Hugh Williams wrote:
How is this process to convert MeSH XML to MeSH RDF which uses lots of
memory performed, is this done in Virtuoso or by some external process ?
It's really converting to triples - https://github.com/HHS/meshrdf
contains the conversion code, which is basically an XSLT process run by
saxon9he in java. There is no Java code in our converter.One reason we
use the current method is so that researchers and linked data software
professionals can independently do the conversion.
Could this XSLT code run inside of Virtuoso? How would we do a partial
change every night rather than a full reload given that some IRIs that
function as both subjects and objects may be deleted each night?
Hi Daniel,
You might like to have a look at our Sponger.
It's a system for ingesting diverse data resources, converting them to RDF;
it matches on URL or MIME-type to identify the originating domain for the
resource, choosing an appropriate stored procedure (hook function) to
prepare and process the data using XSLT, ingesting the resultant rdf/xml
into a graph.
There are various pragmas available to control the method of retrieval;
related resources can be retrieved (to a given degrees of freedom) and a
graph can be cleared before (re)sponging, amongst other things.
Given that XSLT already exists for this MeSH XML, it should not be hard to
rewrite a custom cartridge around it.
Further documentation of interest:
- http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtSponger
-
http://www.slideshare.net/rumito/virtuoso-sponger-rdfizer-middleware-for-creating-rdf-from-non-rdf-data-sources
-
http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtSpongerCartridgeProgrammersGuide
HTH,
~Tim
--
Tim Haynes
Product Development Consultant
OpenLink Software
http://www.openlinksw.com/
http://twitter.com/openlink
--
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