Object Reuse and Exchange
Open Archives Initiative Object Reuse and Exchange (OAI-ORE) defines standards for the description and exchange of aggregations of Web resources. The OAI-ORE specifications are based around the ORE Model which introduces the Resource Map (ReM) that makes it possible to associate an identity with aggregations of resources and make assertions about their structure and semantics. Version 1.0 of the specification was released on 17 October2008.[1]
These aggregations (sometimes called compound digital objects or compound information objects) may combine distributed resources with multiple media types including text, images, data, and video. The goal of OAI-ORE is to expose the rich content in aggregations to applications that support authoring, deposit, exchange, visualization, reuse, and preservation.
OAI-ORE is funded by the Mellon Foundation.
Resource Maps
Resource Maps (ReMs) may be serialized (or represented) in several different formats including Atom feeds, RDF/XML, RDFa, and others. The example below illustrates how a ReM can represent the arXiv e-print at http://arxiv.org/abs/astro-ph/0601007 using an Atom feed. Metadata such as the digital object identifier, title, and authors for the e-print are included first in the Atom feed. The e-print is a compound digital object composed of five aggregated resources which are listed next: OAI-PMH metadata about the e-print, a splash page, a PostScript version of the e-print, a PDF version, and a gzipped tar file containing multiple versions of the e-print.
<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom"
xmlns:dcterms="http://purl.org/dc/terms/"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
<id>http://arxiv.org/rem/astro-ph/0601007#aggregation</id>
<link href="http://arxiv.org/rem/astro-ph/0601007" rel="self" type="application/atom+xml"/>
<generator uri="http://arxiv.org/">arXiv.org e-Print Repository</generator>
<updated>2007-10-10T18:30:02Z</updated>
<category scheme="http://www.openarchives.org/ore/terms/"
term="http://www.openarchives.org/ore/terms/Aggregation" label="Aggregation" />
<link href="info:doi/10.1142/S0217732306019475" rel="related"/>
<link href="info:arxiv/astro-ph/0601007v2" rel="related"/>
<title>Parametrization of K-essence and Its Kinetic Term</title>
<author><name>Hui Li</name></author>
<author><name>Zong-Kuan Guo</name></author>
<author><name>Yuan-Zhong Zhang</name></author>
<entry>
<id>http://oreproxy.org/r?what=http://export.arxiv.org/oai2?verb=GetRecord&metadataPrefix=oai_dc&identifier=astro-ph/0601007&where=http://arxiv.org/rem/astro-ph/0601007%23aggregation</id>
<link href="http://export.arxiv.org/oai2?verb=GetRecord&metadataPrefix=oai_dc&identifier=astro-ph/0601007"
rel="alternate"/>
<updated>2007-05-31T12:52:00Z</updated>
<title>Dublin Core Metadata for "Parametrization of K-essence and Its Kinetic Term"</title>
<category scheme="info:eu-repo/semantics/"
term="info:eu-repo/semantics/DescriptiveMetadata" label="DescriptiveMetadata" />
<rdf:Description
rdf:about="http://export.arxiv.org/oai2?verb=GetRecord&metadataPrefix=oai_dc&identifier=astro-ph/0601007">
<dcterms:conformsTo rdf:resource="http://www.openarchives.org/OAI/2.0/oai_dc/"/>
</rdf:Description>
</entry>
<entry>
<id>http://oreproxy.org/r?what=http://arxiv.org/abs/astro-ph/0601007&where=http://arxiv.org/rem/astro-ph/0601007%23aggregation</id>
<link href="http://arxiv.org/abs/astro-ph/0601007" rel="alternate" type="text/html"/>
<updated>2007-05-31T12:52:00Z</updated>
<title>Splash Page for "Parametrization of K-essence and Its Kinetic Term"</title>
<category scheme="info:eu-repo/semantics/"
term="info:eu-repo/semantics/humanStartPage" label="humanStartPage" />
</entry>
<entry>
<id>http://oreproxy.org/r?what=http://arxiv.org/ps/astro-ph/0601007&where=http://arxiv.org/rem/astro-ph/0601007%23aggregation</id>
<link href="http://arxiv.org/ps/astro-ph/0601007" rel="alternate" type="application/postscript"/>
<updated>2007-05-31T12:52:00Z</updated>
<title>PostScript Version of "Parametrization of K-essence and Its Kinetic Term"</title>
</entry>
<entry>
<id>http://oreproxy.org/r?what=http://arxiv.org/pdf/astro-ph/0601007&where=http://arxiv.org/rem/astro-ph/0601007%23aggregation</id>
<link href="http://arxiv.org/pdf/astro-ph/0601007" rel="alternate" type="application/pdf"/>
<updated>2007-05-31T12:52:00Z</updated>
<title>PDF Version of "Parametrization of K-essence and Its Kinetic Term"</title>
</entry>
<entry>
<id>http://oreproxy.org/r?what=http://arxiv.org/e-print/astro-ph/0601007&where=http://arxiv.org/rem/astro-ph/0601007%23aggregation</id>
<link href="http://arxiv.org/e-print/astro-ph/0601007" rel="alternate"/>
<updated>2007-05-31T12:52:00Z</updated>
<title>Other Versions of "Parametrization of K-essence and Its Kinetic Term"</title>
</entry>
</feed>
The XML above can be validated using the ORE Atom Resource Map Validator.
Notes
- ^ "Open Archives Initiative Announces Production Release of Object Reuse and Exchange Specifications." OAI-ORE Production Release Press Release. 17-Oct-2008
- Lagoze, Carl; Van de Sompel, Herbert (2007), Compound Information Objects: The OAI-ORE Perspective
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- Lagoze, Carl; Van de Sompel, Herbert; Nelson, Michael L.; Warner, Simeon; Sanderson, Robert; Johnson, Pete (2008-04-14), "Object Re-Use & Exchange: A Resource-Centric Approach", arXiv:0804.2273v1 [cs.DL]
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- Van de Sompel, Carl; Lagoze, Herbert (2007), "Interoperability for the Discovery, Use, and Re-Use of Units of Scholarly Communication", CTWatch Quarterly, 3 (3)
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- ORE User Guide - Primer (2008)