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records. descriptions. statements. Metadata Descriptions. records. descriptions. statements. The term “ metadata ” is used differently in different communities. Some use it to refer to machine understandable information ; Some use it only for
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records descriptions statements Metadata Descriptions
records descriptions statements The term “metadata” is used differently in different communities • Some use it to refer to • machine understandable information; • Some use it only for • records that describe electronic resources.
records descriptions statements metadata “records” • Metadata records have been seen as the basic units of management and exchange. • A metadata record uses metadata elements to describe something, e.g., a Web site, an image, a person, or a technical report.
-- (1) Internal storage • A metadata record may be stored in the same file as the resource, e.g.: • Web pages • WORD files • PDF files • Image files • … …
Metadata embedded in a Webpage's Head Section View source Source: marciazeng.slis.kent.edu/metadatabasics/Portuguese/cover.htm
Metadata embedded in a PDF file Description metadata XMP= eXtensible Metadata Platform -- Adobe’s cross-products metadata framework
Multiple output format Metadata embedded in a PDF file (2) Integrated metadata: descriptive, administrative, and technical metadata
Metadata embedded in an image file Photoshop provides multiple templates: for photo, video, audio, Mobil SWF, and even medical images(DICOM) Adobe Bridge providesadjustable metadata templates
ID3 tags for audio files Internal layout of an ID3v2 tagged file. Homepage: http://www.id3.org/Home Complete list of frames: http://www.id3.org/Frames
A metadata record for a song in iTunes A metadata record for a song in iTunes
-- (2) External storage • A common method for large collections where metadata records are usually stored separately from the resource(s) they describe (whether these resources are available in electronic format or not). • A relational database management system (or simpler file system) can be implemented in order to store the records.
The Cleveland Memory Project The Cleveland Memory Project, Cleveland State University Library: www.clevelandmemory.org/disasters/.
Metadata record created with CONTENTdmsoftware Input data values and create records Manage metadata fields, set them as searchable , viewable, or use controlled vocabulary
records descriptions statements Think Differently:Three Descriptions in a Record Record Description B Collected Works of William Shakespeare Description A Title Collection Antony and Cleopatra 1606 William Shakespeare isPartOf Description C Title Date Name createdBy Play Playwright Subject Birthplace Roman history Stratford
(3) Metadata statements embedded in Web pages http://dev.iptc.org/rNews-10-Introduction-to-rNews
Using RDFa format to encode: <articleURI>rdf:typernews:Article<articleURI>rnews:about<thingURI> Slide from: http://www.iskouk.org/conf2013/slides/TarlingSlides.ppt
Using HTML5 Microdata to encode: Original source code:<div> <h1>Metadata Basics</h1> <span>Creator: Marcia L. Zeng</span> <span>Tutorial</span> <a href="../index.htm ">Table Of Content</a> </div> Adding markup with semantically useful microdata (seeing in boldface): <div itemscopeitemtype ="http://schema.org/CreativeWork/WebPage"> <h1 itemprop="name">Metadata</h1> <div itemprop="author" itemscope itemtype="http://schema.org/Person"> <span> Creator: <span itemprop="author">Marcia L. Zeng</span></span> </div> <span itemprop="genre">Tutorial</span> <a href="../index.html" itemprop="mainContentOfPage"> Table Of Content </a> </div>