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As part of its mission, the Dublin Core Metadata Initiative develops and maintains specifications in support of resource description. Specifications developed and reviewed in the context of DCMI's formal approval process are assigned a status (in ascending order of maturity and stability) of "DCMI Working Draft", "DCMI Proposed Recommendation", or "DCMI Recommendation". DCMI also provides pointers to guidelines and services developed outside of this formal review context ("Recommended Resources").
This selection highlights the specifications that currently attract the most attention in the Dublin Core community. Links to additional specifications (including superseded specifications) may be found at http://dublincore.org/documents/. Some of the specifications have been translated into one of twenty-five languages.
DCMI Metadata Terms [DCMI Recommendation]. This periodically updated document provides a one-stop source of up-to-date information on DCMI metadata terms, including the classic Dublin Core Metadata Element Set, the DCMI Type Vocabulary, and resource classes used as formal domains and ranges. Supporting documents includes
Interoperability Levels for Dublin Core Metadata [DCMI Recommended Resource]. This document articulates current thinking in the Dublin Core community about the nature of metadata interoperability. Read more...
Guidelines for Dublin Core Application Profiles [DCMI Recommended Resource]. This document provides guidelines for the creation of Dublin Core Application Profiles. The document explains the key components of a Dublin Core Application Profile and walks through the process of developing a profile. The document is aimed at designers of application profiles -- people who will bring together metadata terms for use in a specific context.
Singapore Framework for Dublin Core Application Profiles [DCMI Recommended Resource]. The Singapore Framework for Dublin Core Application Profiles is a framework for designing metadata applications for maximum interoperability and for documenting such applications for maximum reusability. The framework defines a set of descriptive components that are necessary or useful for documenting an Application Profile and describes how these documentary standards relate to standard domain models and Semantic Web foundation standards. The framework forms a basis for reviewing Application Profiles for documentary completeness and for conformance with Web-architectural principles.
Using Dublin Core [DCMI Recommended Resource]. From January 1998 through the latest version in November 2005, this document was maintained as the main entry point for new users of Dublin Core metadata. While this document is accessibly written, with useful concrete examples, readers should be aware that the document is by now somewhat out of date and is best used in conjunction with Guidelines for Dublin Core Application Profiles.
DCMI Abstract Model [DCMI Recommendation]. This document specifies an abstract syntax for "description sets" (metadata records). Finalized as a DCMI Recommendation in March 2005, the DCMI Abstract Model (DC-AM) expressed the style of metadata that had emerged in the Dublin Core community over the previous decade as formal constructs based on the W3C Resource Description Framework (for example, by giving a formal definition to the DC-specific notion of a "vocabulary encoding scheme" and providing for the use of parallel labels in multiple languages). The Abstract Model was designed to bridge the modern paradigm of the unbounded, linked data graph and the more familiar paradigm of the validatable metadata record, providing a foundation for the development of application-independent syntax specifications and constraint languages.
Description Set Profiles: A constraint language for Dublin Core Application Profiles [DCMI Working Draft]. This document specifies an application-independent language for the constraints used in defining "templates" for metadata records -- for example, to specify a template for records which describe exactly "one book", with "up to ten authors", using "subject headings from the Library of Congress". This specification represents work in progress and is likely to evolve in response to implementation experience.
Criteria for the Review of Application Profiles [DCMI Recommended Resource]. This document was developed by the DCMI Usage Board to evaluate Application Profiles for documentary completeness and for conformance with linked-data principles. The criteria are based on the DCMI Abstract Model, Description Set Profile (DSP) language, and Singapore Framework. Even when conformance with these specifications is not a requirement, implementers may find these review criteria useful for uncovering flaws or weaknesses in the logic of an application profile.
A MoinMoin Wiki Syntax for Description Set Profiles [DCMI Working Draft]. Using this draft syntax, editors can embed formal constraint information about application profiles into normal Wiki documents and extract this information using an Open Source MoinMoin Wiki tool into an XML representation. This functionality is illustrated by the MoinMoin Wiki document for the Scholarly Works Application Profile.
DC-TEXT [DCMI Recommended Resource]. "Expressing Dublin Core metadata using the DC-Text format" is a syntax for representing a DC-AM Description Set in plain text. Its primary use is in presenting metadata constructs for human consumption.
DC-HTML [DCMI Recommendation]. "Expressing Dublin Core metadata using HTML/XHTML meta and link elements" describes how a Dublin Core metadata description set can be encoded using the HTML/XHTML <meta> and <link> elements. This specification is also an HTML "meta data profile" as defined by the HTML specification. See also:
DC-DS-XML [Proposed Recommendation]. "Expressing Dublin Core Description Sets using XML (DC-DS-XML)" specifies an XML format for representing a Dublin Core metadata description set. The specification supports all of the features of a Description Set as described by the DCMI Abstract Model. Related resources include:
DC-RDF [DCMI Recommendation]. "Expressing Dublin Core metadata using the Resource Description Framework (RDF)" describes how constructs of the DCMI Abstract Model may be expressed in RDF graphs. How this document relates to earlier styles for expressing Dublin Core metadata in RDF is discussed in "Notes on DCMI specifications for Dublin Core metadata in RDF".
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