Binary RDF

[Jakob Voss]

Hi,


I just stumbled upon binary RDF at http://www.rdfhdt.org/ - there was a
first W3C submission in May: http://www.w3.org/Submission/2011/03/ 


As far as I understand, HDT includes Bitmap triples as a very compact
representation of RDF graphs,
which still can be queried for triples of the form (s,?p,?o), (s,p,?o),
and (s,p,o) in constant time.
There are implementations in C++ and Java. This could not only be
interesting as serialization format
(RDF::Trine::Serializer::HDT and RDF::Trine::Parser::HDT to be written)
but maybe also for a fast
in-memory graph store (RDF::Trine::Store::HDT?) if you need to read and
query a large graph for triples
with known subjects.


Jakob






-- 
Verbundzentrale des GBV (VZG)
Digitale Bibliothek - Jakob Voß
Platz der Goettinger Sieben 1
37073 Goettingen - Germany
+49 (0)551 39-10242
http://www.gbv.de
jakob.voss at gbv.de