We are pleased to offer as a service to provide you with
help finding URIs.

It sort of does what it says:- if you provide a URI, it will give you back
URIs that may well be co-referent, should any be known to it.
In addition, by using, if you give it a string, it will provide
bundles of URIs that correspond to looking up the string at Sindice and
processing them at <sameas>.

Apart from the obvious use of the service through the web-form, simple URIs
can be provided to do lookups:
The following formats are also supported:
rdf+xml, text/n3, application/json, text/plain
both through content negotiation and also as a specific URI.
For example:

We believe that the Semantic Web and Linked Data need to develop clear,
focussed, services that only do one or two things, so that they can be
composed and utilised by the more complex services, as well as facilitating
We hope that <sameas> fits into that category, and that Linked Data
application builders will find it an appropriate and useful service for the
important task of discovering co-referent URIs.
In addition, by providing formats oriented towards non-Linked Data
application, we hope that the use of Linked Data can be spread even wider.

We currently have about 18M URIs, with an average of 3 URIs per bundle.


Ian Millard and Hugh Glaser

Hugh Glaser,  Reader
              Dependable Systems & Software Engineering
              School of Electronics and Computer Science,
              University of Southampton,
              Southampton SO17 1BJ
Work: +44 (0)23 8059 3670, Fax: +44 (0)23 8059 3045
Mobile: +44 (0)75 9533 4155, Home: +44 (0)23 8061 5652

"If we have a correct theory but merely prate about it, pigeonhole it, and
do not put it into practice, then the theory, however good, is of no

Received on Wednesday, 3 June 2009 19:49:16 UTC