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Announcement: The "info" URI Scheme

From: Hammond, Tony (ELSLON) <T.Hammond@elsevier.com>
Date: Tue, 30 Sep 2003 15:23:46 +0100
Message-ID: <54A600C436EA694581B93E4BD4D4788A07E2F630@elslonexc004.eslo.co.uk>
To: www-rdf-interest@w3.org


We believe that the following message about the newly proposed "info" URI
Scheme will be of interest to this list. The "info" scheme will allow
identifiers from certain public namespaces (particularly those of interest
to the library community) to be used on the Web.





Tony Hammond

Advanced Technology Group, Elsevier

32 Jamestone Road, London NW1 7BY, UK








Announcing a new Internet-Draft for an Informational RFC, to allow commonly
used identifiers to be part of the Web:


  The "info" URI Scheme for Information Assets with Identifiers in Public


      Herbert Van de Sompel - Los Alamos National Laboratory

      Tony Hammond - Elsevier

      Eamonn Neylon - Manifest Solutions

      Stuart L. Weibel - OCLC Online Computer Library Center 


The draft is available at:




a. Purpose of the "info" URI scheme: 


There exist many information assets with identifiers in public namespaces
that are not referenceable by URI schemes. Examples of such namespaces
include Dewey Decimal Classifications [1], Library of Congress Control
Numbers (LCCN) [2], NASA Astrophysics Data System Bibcodes [3], and Open
Archives Initiative (OAI) identifiers [4], among others.  The "info" URI
scheme will facilitate the referencing of information assets that have
identifiers in such public namespaces by means of URIs. The "info" scheme is
based on a Registry that invites the registration of public namespaces used
for the identification of information assets, by the parties that maintain
the namespaces.


For example, assuming that the namespace of Dewey Decimal Classifications
(ddc:) and the namespace of Library of Congress Control Numbers (lccn:)
would be registered by their respective authorities, then:


* the Dewey Decimal Classification 22/eng//004.678 (for the term "Internet")
could be expressed as the "info" URI <info:ddc/22/eng//004.678>


* the Library of Congress Control Number 2002022641 could be expressed as
the "info" URI <info:lccn/2002022641>


b. Background of this effort


The effort to create the "info" URI scheme emerged from the NISO process to
standardize the OpenURL Framework for context-sensitive services [5], which
requires the ability to describe resources by means of globally recognizable
identifiers.  The Draft Standard for Trial Use released for Public Comment
introduced a "proprietary" naming architecture which allowed information
assets to be referenced by means of widely used non-URI identifiers (e.g.
PubMed identifiers, Digital Object Identifiers, Astrophysics Datasystem
Bibcodes, and others) which would be registered under the OpenURL Framework.


Public feedback led to the decision to fundamentally revise the naming
architecture, and to base all resource identification requirements within
the OpenURL Framework on URIs alone.  Because it was deemed unreaslistic to
expect that all namespaces required in the OpenURL Framework would be
registered within the URI allocation by the respective namespace
authorities, the "info" URI effort was launched.  This work is being
conducted under the auspices of NISO, and with active involvement and
consultation from the IETF and the W3C.  It is hoped that the lightweight,
and community-based, registration mechanism that will underlie the "info"
URI scheme will rapidly lead to the availability of "info" URIs to identify
a wide variety of information assets.  More detailed information of the
effort is available at [6].


c. References


[1] "Dewey Decimal Classification". Retrieved September 20,  2003 from


[2] "Library of Congress Control Number". Retrieved August 1, 2003 from


[3] "NASA Astrophysics Data System Bibliographic Code". Retrieved August 1,
2003 from <http://adsdoc.harvard.edu/abs_doc/help_pages/data.html>


[4] Lagoze, C., H. Van de Sompel, M. Nelson and S. Warner. "Specification
and XML Schema for the OAI Identifier Format", June 2002. Retrieved
September 4, 2003 from


[5] Draft Standard for Trial Use ANSI/NISO Z39.88, "The OpenURL Framework
for Context-Sensitive Services".  Retrieved September 20, 2003 from



Received on Tuesday, 30 September 2003 10:29:48 UTC

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