# Resource map

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Concept in the Object Reuse and Exchange model

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A **resource map** (**ReM**) is a concept of the [ORE Model](/source/Open_Archives_Initiative_Object_Reuse_and_Exchange) for associating an identity with compound digital objects (aggregations of digital resources) and making assertions about their structure and semantics. Compound objects combine distributed resources, including multiple media types.

## ReM Serialization

A Resource Map may be [serialized](/source/Serialization) (or represented) in several different formats including [Atom feeds](/source/Atom_feed), [RDF/XML](/source/RDF%2FXML), [RDFa](/source/RDFa), and others.

The example below illustrates how a ReM can represent the [arXiv](/source/ArXiv) [e-print](/source/E-print) at [https://arxiv.org/abs/astro-ph/0601007](https://arxiv.org/abs/astro-ph/0601007) using an Atom feed. Metadata such as the [digital object identifier](/source/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](/source/OAI-PMH) [metadata](/source/Metadata) about the e-print, a [splash page](https://arxiv.org/abs/astro-ph/0601007), a [PostScript version](https://arxiv.org/ps/astro-ph/0601007) of the e-print, a [PDF version](https://arxiv.org/abs/astro-ph/0601007), and a [gzipped tar file](https://arxiv.org/e-print/astro-ph/0601007) containing multiple versions of the e-print.

## Notes

- Lagoze, Carl; Van de Sompel, Herbert (May 2007), [*Compound Information Objects: The OAI-ORE Perspective*](http://www.openarchives.org/ore/documents/CompoundObjects-200705.html)

## See also

- [Open Archives Initiative Object Reuse and Exchange](/source/Open_Archives_Initiative_Object_Reuse_and_Exchange)

- [Atom Syndication Format](/source/Atom_Syndication_Format)

- [Open Archives Initiative](/source/Open_Archives_Initiative)

## External links

- [ORE website](http://www.openarchives.org/ore/)

- [ORE Google Group](https://groups.google.com/group/oai-ore)

- [ORE Atom Resource Map Validator](http://www.openarchives.org/ore/1.0/atom-validator) (currently broken, since June 2010).

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Adapted from the Wikipedia article [Resource map](https://en.wikipedia.org/wiki/Resource_map) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Resource_map?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.