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RE: Library of Congress Subject Headings as SKOS Linked Data

From: Hausenblas, Michael <michael.hausenblas@joanneum.at>
Date: Mon, 9 Jun 2008 16:05:28 +0200
Message-ID: <768DACDC356ED04EA1F1130F97D29852017106F6@RZJC2EX.jr1.local>
To: "Ed Summers" <ehs@pobox.com>
Cc: "SWD Working SWD" <public-swd-wg@w3.org>, <public-lod@w3.org>


Congrats! Very, very impressive usage of both linked data and RDFa ;)

Especially your 'GRDDL stuff' in the header should be used in 'good
practice' somewhere on SWD or LOD I think.


 Michael Hausenblas, MSc.
 Institute of Information Systems & Information Management
 JOANNEUM RESEARCH Forschungsgesellschaft mbH

>-----Original Message-----
>From: public-swd-wg-request@w3.org 
>[mailto:public-swd-wg-request@w3.org] On Behalf Of Ed Summers
>Sent: Monday, June 09, 2008 3:54 PM
>To: SWD Working SWD; public-lod@w3.org
>Subject: Library of Congress Subject Headings as SKOS Linked Data
>I'd like to announce an experimental linked-data, SKOS representation
>of the Library of Congress Subject Headings (LCSH) [1] ... and also
>ask for some help.
>The Library of Congress has been participating in the W3C Semantic Web
>Deployment Working Group, and has converted LCSH from the MARC21 data
>format [2] to SKOS. LCSH is a controlled vocabulary used to index
>materials that have been added to the collections at the Library of
>Congress. It has been in active development since 1898, and was first
>published in 1914 so that other libraries and bibliographic utilities
>could use and adapt it. The lcsh.info service makes 266,857 subject
>headings available as SKOS concepts, which amounts to 2,441,494
>triples that are separately downloadable [3] (since there isn't a
>SPARQL endpoint just yet).
>At the last SWDWG telecon some questions came up about the way
>concepts are identified, and made available via HTTP. Since we're
>hoping lcsh.info can serve as an implementation of SKOS for the W3C
>recommendation process we want to make sure we do this right. So I was
>hoping interested members of the linked-data and SKOS communities
>could take a look and make sure the implementation looks correct.
>Each concept is identified with a URI like:
>  http://lcsh.info/sh95000541#concept
>When responding to requests for concept URIs, the server content
>negotiates to determine which representation of the concept to return:
>  - application/xhtml+xml
>  - application/json
>  - text/n3
>  - application/rdf+xml
>This is basically the pattern that Cool URIs for the Semantic Web
>discusses as the Hash URI with Content Negotiation [4]. An additional
>point that is worth mentioning is that the XHTML representation
>includes RDFa, that also describes the concept.
>At the moment the LCSH/SKOS data is only linked to itself, through
>assertions that involve skos:broader, skos:narrower, and skos:related.
>But the hope is that minting URIs for LCSH will allow it to be mapped
>and/or linked to concepts in other vocabularies: dbpedia, geonames,
>Any feedback, criticisms, ideas are welcome either on either the
>public-lod [5] or public-swd-wg [6] discussion lists.
>Thanks for reading this far!
>[1] http://lcsh.info
>[2] http://www.loc.gov/marc/
>[3] http://lcsh.info/static/lcsh.nt
>[4] http://www.w3.org/TR/cooluris/#hashuri
>[5] http://lists.w3.org/Archives/Public/public-lod/
>[6] http://lists.w3.org/Archives/Public/public-swd-wg/
Received on Monday, 9 June 2008 14:10:21 UTC

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