Introduction to metadata Jenn Riley Metadata Librarian Digital Library Program.

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Introduction to metadata Jenn Riley Metadata Librarian Digital Library Program

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  • Introduction to metadataJenn RileyMetadata LibrarianDigital Library Program

    SLIS S652

  • 10/8/2009SLIS S652*Many definitions of metadataData about dataStructured information about an information resource of any media type or format. (Caplan)Structured information that describes, explains, locates, or otherwise makes it easier to retrieve, use, or manage an information resource. (NISO)

    SLIS S652

  • 10/8/2009SLIS S652*Some uses of metadataBy information specialistsDescribing non-traditional materialsCataloging Web sitesNavigating within digital objectsManaging digital objects over the long termBy novicesPreparing Web sites for search enginesDepositing materials into an institutional repositoryManaging citation listsiTunesTagging flickr, del.icio.us, etc.LibraryThing

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  • Good metadataMeets a defined purposeConforms to accepted standards and/or best practicesDoesnt have to be created by humans10/8/2009*SLIS S652

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  • Metadata formatsPredefined sets of features likely to be necessary or useful for a specific purposeChoosing a format others also use improves interoperabilityCan be:Official standardsBacked by professional organizationBacked by trusted institutionLocally developedIn the library world, most referred to by acronyms: MARC, MODS, DC, METS, TEI, EAD10/8/2009*SLIS S652

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  • 10/8/2009SLIS S652*Creating and storing metadataHTML tagsSpreadsheetsDatabasesXMLLibrary catalogsDigital library/content management systems

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  • Some types of metadataDescriptive metadataTechnical metadataStructural metadataMarkup languages10/8/2009*SLIS S652

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  • How metadata can be used10/8/2009SLIS S652*

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  • Descriptive metadataA description of a resource for display to usersProvides the context they need to understand a resourceFor discoveryIncludes both search and browseIn a controlled environment designed to match target users with interesting resourcesPushed out to the network for others to make use ofCan be both objective and subjectiveUsually human-generatedTypical DL standards: MARC, MARCXML, MODS, Dublin Core, EAD, VRA Core, FGDC, Darwin Core, PB Core10/8/2009*SLIS S652

    SLIS S652

  • Types of descriptive metadata typically recordedCreatorDate of creation/performance/etcTopic depicted or alluded toGeographic place associated with a resource or resource creator (map-based interface?)Language for textual resourcesLikely browse entry points such as resource type, topical subject, or genreLinks to supplementary contentHow will users find this material on the Web?10/8/2009SLIS S652*

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  • Descriptive metadata for discovery10/8/2009SLIS S652*

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  • Descriptive metadata an example10/8/2009SLIS S652*

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  • Descriptive metadata another example10/8/2009SLIS S652*

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  • Technical metadataAllows systems to manage and process resources in appropriate waysEssential for the preservation of digital materialsGenerally format-specificGenerally machine-generatedNot the digital resource itself, but essential information required to understand itTypical DL standards: MIX, TextMD, AES Core Audio10/8/2009SLIS S652*

    SLIS S652

  • Types of technical metadata typically recordedImages: color depth, spatial resolution, software used for creationAudio: sample rate, codec, compression mechanismVideo: sample rate, frame rate, codec, compression mechanismTexts: language, script, font, character encoding, reading directionData sets: device used to capture, analysis performedWhat data is needed to understand these digital files into the future?10/8/2009SLIS S652*

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  • Technical metadata example10/8/2009SLIS S652*

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  • Structural metadataDescribes relationshipsPoints of interest within a resourceBetween parts and wholesBetween different representations of the same contentWhen resources should be presented in sequenceWhen resources should be presented in parallelOften machine generatedTypical DL standards: METS, MPEG-21 DIDL, AES31-3 ADL, SMIL

    10/8/2009*SLIS S652

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  • Types of structural metadata typically recordedInternal structure of an audio file or textual resourceMultiple views of a 3-D objectGrouping and sequence related materialsSynchronizing video or text with audioParallel navigation of multiple representations of the same contentHow will users move within and between your online resources?10/8/2009SLIS S652*

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  • Structural metadata an example10/8/2009SLIS S652*

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  • Structural metadata another example10/8/2009SLIS S652*

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  • Markup languagesMix metadata with data (resource content)Insert flags into arepresentation of the content of a resource, signaling what bits of content are or what they meanGenerally have a header with descriptive metadata tooEither human- or machine-generatedTypical DL standards: TEI, EAD, MusicXML, MEI10/8/2009*SLIS S652

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  • Common uses of markup languagesScholarly encoding of a textual resourceBasic text markup for presentation and page turningAdding value to an archival finding aidDo the resources you provide need documentation of their internal structure and meaning?10/8/2009SLIS S652*

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  • Markup languages an example10/8/2009SLIS S652*

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  • Markup languages another example10/8/2009SLIS S652*

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  • What next?What do you want to deliver as an end product to your users?How could structured metadata support your users discovery needs?What are the primary intellectual access points for your resources?What from your project is it important to preserve into the future?

    Presentation slides: 10/8/2009SLIS S652*

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