Difference between revisions of "Metadata specifications in context"
From filmstandards.org
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It is largely neutral with respect to the semantics of data elements. Therefore, it can be used as an encoding for arbitrary data structures. | It is largely neutral with respect to the semantics of data elements. Therefore, it can be used as an encoding for arbitrary data structures. | ||
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+ | {| style="float: right; border: 1px solid #BBB; margin: .46em 0 0 .2em;" | ||
+ | |- style="font-size: 86%;" | ||
+ | | valign="top" width="405px" |[[File:Dbpedia anni ruggenti.jpg|400px]]<br /> | ||
+ | <span class="imgcaption"> | ||
+ | Selected statements from http://dbpedia.org/page/Roaring_Years. Retrieved March, 2011 | ||
+ | </span> | ||
+ | | valign="top" width="405px" | | ||
+ | This is filmographic metadata represented in RDF/N3. | ||
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+ | RDF (short for Resource Description Framework) is not actually an encoding, but a data model that can itself be encoded in different ways. Among others, it is the recommended representation for metadata using the Dublin Core element set, and for controlled vocabularies expressed using the SKOS model. | ||
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+ | Adoption of RDF has been slower than that of many other technologies, perhaps because of its more radical departure from established methods of representing data. | ||
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+ | One particular strength of RDF is that it facilitates integration of data from different models without the need for finding a ''least common denominator''. | ||
+ | RDF has been chosen as the core for several activities collectively known as the ''Semantic Web''. | ||
+ | |} | ||
+ | |||
[[Category:TC 372 Compendium]] | [[Category:TC 372 Compendium]] |
Revision as of 20:31, 21 March 2011
From the TC 372 Workshop Compendium
Metadata, as the name implies, is data about data. In current usage of the term, the meaning of data is not restricted to digitally encoded information, but can be almost anything.
![]() Part of a catalogue record from the Moving Image Collections portal, http://mic.imtc.gatech.edu/. Retrieved Oct, 2010 |
The image on the left shows metadata encoded in XML. This encoding uses human-readable names for its elements, and nesting (i.e. elements enclosed by elements) as a way of expressing structure. XML has become the most widely used encoding for data and metadata exchange. It is largely neutral with respect to the semantics of data elements. Therefore, it can be used as an encoding for arbitrary data structures. |
![]() Selected statements from http://dbpedia.org/page/Roaring_Years. Retrieved March, 2011 |
This is filmographic metadata represented in RDF/N3. RDF (short for Resource Description Framework) is not actually an encoding, but a data model that can itself be encoded in different ways. Among others, it is the recommended representation for metadata using the Dublin Core element set, and for controlled vocabularies expressed using the SKOS model. Adoption of RDF has been slower than that of many other technologies, perhaps because of its more radical departure from established methods of representing data. One particular strength of RDF is that it facilitates integration of data from different models without the need for finding a least common denominator. RDF has been chosen as the core for several activities collectively known as the Semantic Web. |