VTPF is a feature for the Triple Pattern Fragments interface that allows for low-cost querying of RDF archives at specific versions, between versions, and for versions without requiring separate, costly interfaces per version. It introduces hypermedia controls for versioned queries and represents changesets and versionsets in RDF/HTML. The interface supports three types of triple pattern queries for versioning information.

1. VTPF
Versioned Triple Pattern Fragments
A TPF versioning feature
Ruben.Taelman@UGent.be
@rubensworks
Which books were
present at time X?
Which books were
added and removed
between times X and Y?
At what times was
book A present?
Publishing RDF archives typically involves
separate interfaces per version.
These interfaces (e.g. SPARQL) can be costly,
leading to increasing publication costs for each version.
VTPF is feature for the low-cost Triple Pattern Fragments interface
that allows querying RDF archives at, between and for versions
Our contributions:
Hypermedia controls for versioning queries
RDF/HTML representation of changesets and versionsets
Interface support for 3 triple pattern versioning query types
http://versioned.linkeddatafragments.org/bear
Query the history yourself!
Query at versions
n-1n-2n-3... n
n-1n-2n-3... n
n-1n-2n-3... n
Query between versions
Query for versions