Object Reuse and Exchange: Difference between revisions

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{{Short description|Archival standards}}

'''Open Archives Initiative Object Reuse and Exchange''' (OAI-ORE) defines standards for the description and exchange of aggregations of [[Web resource]]s. 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 October]][[2008]].<ref>"Open Archives Initiative Announces Production Release of Object Reuse and Exchange Specifications." [http://www.openarchives.org/ore/documents/ore-production-press-release.pdf OAI-ORE Production Release Press Release]. 17-Oct-2008</ref>

The [[Open Archives Initiative]] '''Object Reuse and Exchange''' (OAI-ORE) defines standards for the description and exchange of aggregations of [[web resource]]s. The OAI-ORE specification implements 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.

These aggregations (sometimes called ''[[compound digital objectsobject]]s'' or ''compound information objects'') may combine distributed resources together, and 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, [[Information visualization|visualization]], reuse, and [[digital preservation|preservation]].

The [[Andrew W. Mellon Foundation]] funded two years of work on the OAI-ORE project in 2006–2008.<ref>[http://www.openarchives.org/ore/documents/MellonProposalwithoutbudget.pdf Andrew Mellon Foundation: Repositories Interoperability Framework: Augmenting Interoperability across Scholarly Repositories]</ref> Version 1.0 of the specification was released on 17 October 2008.<ref>"Open Archives Initiative Announces Production Release of Object Reuse and Exchange Specifications." [http://www.openarchives.org/ore/documents/ore-production-press-release.pdf OAI-ORE Production Release Press Release]. 17-Oct-2008</ref>

OAI-ORE is funded by the [[Mellon Foundation]].

== Resource MapsIntroduction ==

The ORE standard is concerned with the description of aggregations of web resources. It defines 4 entities:

* the Aggregation itself, identified by its [[URI]] but without any corresponding concrete resource. It is a conceptual resource. Being uniquely identified it can enter into relationships with other resources, in particular aggregations of aggregations become possible.

* the Aggregated Resource: any resource part of an aggregation, identified by its URI

* the Resource Map: a resource describing an aggregation based on a set of assertions. A mandatory assertion indicates which aggregation the Resource Map itself is describing. Other assertions indicate the aggregated resource(s). Certain metadata are mandatory as well, such as the map creator. [[Dublin Core]] terms are used for this purpose.

* the proxy: a virtual resource acting as a proxy for a certain aggregated resource in the context of a certain aggregation. Its use is optional. A so-called lineage relationship can be established between proxy resources to trace the origin of an aggregated resource from another aggregation.

The standard accounts for the possible redundant description of the same aggregation and defines the notion of authoritative Resource Map. It also consider the notions of similar aggregations and of type of aggregated resources.

Resource Maps (ReMs) may be [[serialization|serialized]] (or represented) in several different formats including [[Atom feed]]s, [[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 [http://arxiv.org/abs/astro-ph/0601007 splash page], a [http://arxiv.org/ps/astro-ph/0601007 PostScript version] of the e-print, a [http://arxiv.org/pdf/astro-ph/0601007 PDF version], and a [http://arxiv.org/e-print/astro-ph/0601007 gzipped tar file] containing multiple versions of the e-print.

The standard is open in the sense that a Resource Map may include any additional assertions about resources.

<source lang="xml">

<?xml version="1.0" encoding="utf-8"?>

<feed xmlns="http://www.w3.org/2005/Atom"

<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>

Finally, the ORE standard builds upon the ''Cool URIs ''<ref>[http://www.w3.org/TR/cooluris Cool URIs for the Semantic Web ] (W3C Interest Group Note)</ref> guideline, which discussed two strategies for not confusing a thing and some representation of it.

<entry>

<id>http://oreproxy.org/r?what=http://export.arxiv.org/oai2?verb=GetRecord&amp;metadataPrefix=oai_dc&amp;identifier=astro-ph/0601007&amp;where=http://arxiv.org/rem/astro-ph/0601007%23aggregation</id>

<link href="http://export.arxiv.org/oai2?verb=GetRecord&amp;metadataPrefix=oai_dc&amp;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&amp;metadataPrefix=oai_dc&amp;identifier=astro-ph/0601007">

<dcterms:conformsTo rdf:resource="http://www.openarchives.org/OAI/2.0/oai_dc/"/>

</rdf:Description>

</entry>

== See also ==

<entry>

* [[Atom (standard)]]

its about poop

ur gay

==Notes==

{{reflist}}

==Bibliography==

</entry>

<entry>

<id>http://oreproxy.org/r?what=http://arxiv.org/ps/astro-ph/0601007&amp;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&amp;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&amp;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>

</source>

The XML above can be validated using the [http://www.openarchives.org/ore/1.0/atom-validator ORE Atom Resource Map Validator].

==Notes==

<references />

* {{Citation

| last1 = Lagoze | first1 = Carl

| last2 = Van de Sompel | first2 = Herbert

| yeardate = May 2007

| url = http://www.openarchives.org/ore/documents/CompoundObjects-200705.html

| month = May

| title = [http://www.openarchives.org/ore/documents/CompoundObjects-200705.html Compound Information Objects: The OAI-ORE Perspective] }}

}}

* {{cite arXiv

| last1 = Lagoze | first1 = Carl

| title = Object Re-Use & Exchange: A Resource-Centric Approach

| last2 = Van de Sompel | first2 = Herbert

| last3 = Nelson | first3 = Michael L.

| last4 = Warner | first4 = Simeon

| last5 = Sanderson | first5 = Robert

| last6 = Johnston | first6 = Pete

| date = 2008-04-14

| eprint = 0804.2273

| mode=cs2

| class = cs.DL

}}

* {{Citation

| last1 = LagozeVan de Sompel | first1 = CarlHerbert

| last2 = Van de SompelLagoze | first2 = Herbert Carl

| date = Aug 2007

| last3 = Nelson | first3 = Michael L.

| url = http://www.ctwatch.org/quarterly/articles/2007/08/interoperability-for-the-discovery-use-and-re-use-of-units-of-scholarly-communication/

| last4 = Warner | first4 = Simeon

| title = Interoperability for the Discovery, Use, and Re-Use of Units of Scholarly Communication

| last5 = Sanderson | first5 = Robert

| journal = CTWatch Quarterly | last6volume = Johnson3 | first6issue = Pete3

}}

| contribution = Object Re-Use & Exchange: A Resource-Centric Approach

| title = arXiv:0804.2273v1 [cs.DL]

| date = [[2008-04-14]]

| year = 2008

| contribution-url = http://aps.arxiv.org/abs/0804.2273 }}

* {{Citation

| last1 = Van de Sompel | first2 = Herbert

| last2 = Lagoze | first1 = Carl

| year = 2007 | month = Aug | title = [http://www.ctwatch.org/quarterly/articles/2007/08/interoperability-for-the-discovery-use-and-re-use-of-units-of-scholarly-communication/ Interoperability for the Discovery, Use, and Re-Use of Units of Scholarly Communication] | volume = 3 | number = 3 | journal = CTWatch Quarterly }}

* [http://www.openarchives.org/ore/1.0/primer.html ORE User Guide - Primer] (2008)

== See also ==

* [[Atom Syndication Format]]

* [[Open Archives Initiative]]

== External links ==

* [http://www.openarchives.org/ore/ ORE website]

* [http://www.openarchives.org/ore/1.0/atom-validator ORE Atom Resource Map Validator] (currently broken, since June 2010). <!-- as of 17 July 2010 -->

* [http://groups.google.com/group/oai-ore ORE Google Group]

* [http://foresite.cheshire3.org/wiki/ ORE Wiki]

* [http://www.openarchives.org/ore/1.0/atom-validator ORE Atom Resource Map Validator]

[[Category:DigitalArchival librariesscience]]

[[Category:Internet protocols]]