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Sharing Knowledge: Scientific Communication - SSOAR

Sharing Knowledge: Scientific Communication - SSOAR

Sharing Knowledge: Scientific Communication - SSOAR

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MPRESS - transition of metadata formats 167<br />

Transition to RDF creates the heterogenity problem that we now have, which<br />

is a zoo of sources offering index data for MPRESS: old harvest gatherers offering<br />

SOIF, X-Harvest gatherers offering RDF and agents that export index data<br />

in the Open Archives Protocoll (http://www.openarchives.org/). But this is unavoidable<br />

as long as one accepts data coming up in the former formats what we<br />

want to do in MPRESS.<br />

We want to import this zoo of sources into HyREX [Gövert, 2002]. During<br />

the CARMEN project a script (broker.pl) was developed that collects data from<br />

harvest gatherers, X-Harvest gatherers and interfaces using the Open Archives<br />

Protocoll. The data that are stored by this script have to be converted to XML<br />

using for example soif2xml. Then the whole set of data is in XML format and<br />

converted again using XSLT. This procedure results in a set of XML documents<br />

that are valid against the DTD we are using to index the data with HyREX.<br />

Bibliography<br />

Brickley, Dan; Bray, Tim: “What is RDF?”,<br />

http://www.xml.com/pub/a/2001/01/24/rdf.html, 2001.<br />

Dalitz, Wolfgang; Grötschel, Martin; Lügger, Joachim: “Information Services<br />

for Mathematics in the Internet (Math-Net)”, 15th IMACS World Congress<br />

1997 on <strong>Scientific</strong> Computation, Medelling and Applied Mathematis, Volume<br />

4: Artificial Intelligence and Computer Science, Wissenschaft und Technik,<br />

Berlin, 1997, p. 773-778.<br />

Gövert, Norvert; Großjohann, Kai: „HyREX Manual“, http://www.is.informatik.uni-duisburg.de/projects/hyrex/manual.pdf.<br />

Grötschel, Martin; Lügger, Joachim: “<strong>Scientific</strong> Information Systems and Metadata”,<br />

Classification in the Information Age, Springer, 1999, p.3-20.<br />

Hardie, T.; Bowman, M.; Hardy, Darren R.; Schwartz, Michael F.; Wessels,<br />

Duane: “CIP Index Oject Format for SOIF Objects”, IETF RFC2655, 1999.<br />

Hardy, Darren R.; Schwartz, Michael F.: “Customized information extraction as<br />

a basis for resource discovery”, ACM Transactions on Computer Systems,<br />

Vol. 14 no. 2, 1996, p 171-199.<br />

Hardy, Darren R.; Schwartz, Michael F.; Wessels, Duane: “Harvest – Effective<br />

use of Internet Information”, University of Colorado at Boulder, Technical<br />

Report CU-CS-743-94, 1996.<br />

Kokkelink, Stefan: “Simple XML/RDF extension of Harvest-NG”,<br />

http://www.math.uos.de/projects/carmen/AP7/DOM/dom.htm, 2000.<br />

Kunze, John: “Encoding Dublin Core in HTML”, IETF RFC 2731, 1999.<br />

Rivest, R. L.: “The MD5 Message-Digest Algorithm”, IETF RFC 1321, 1992.

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