From EAD to METS

From ead to mets
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From EAD to METS A review and history of METS Rick Beaubien UC Berkeley

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EAD and Ebind EAD started at UCB in Berkeley Finding Aid Project: 1993-1995 Applied in California Heritage Project (1995) Goals: Digitize accumulations relating to CA history, make EAD discovering helps for these accumulations, and connection the EADs to the substance Linking to single segment items (painting) simple Linking to multi-page objects (book) troublesome

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Ebind SGML DTD created at UCB by Alvin Pollock & Daniel Pitti Key components Provided method for determining how the individual pictures involving an advanced rendition of an individual work fit together into an organized, intelligible entire Facilitated disclosure of Ebind encoded computerized objects External: connection to library list record Internal: restricted enlightening component set

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Making of America II DLF and NEH financed activity initiating in 1997 Extension of EAD work Participants: UC Berkeley (lead), Penn State, UCLA, Stanford, NYPL Focus: making an incorporated however appropriated computerized library of chronicled materials Cornerstone: advanced protest encoding standard

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MOA2 Development Process Defined craved usefulness of library computerized objects. Characterized metadata expected to bolster imperative usefulness Distinguished three primary sorts of metadata for Library Digital Objects Structural (arrange, see and explore) Descriptive (disclosure) Administrative (oversee)

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MOA2 Development Process Codified the essential metadata in a xml DTD: MOA2.DTD XML DTD created by Jerome McDonough Direct forerunner of METS

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MOA2.DTD Features Support for substance and structure Provided for reviewing the substance documents Provided for applying at least one (various leveled) structures to the substance records Limitations: Accommodated picture and content advanced substance just Structural divisions could just reference basic picture content documents No a portion of documents, succession of records or parallel record bolster

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MOA2.DTD Features Support for revelation & depiction: Defined its own spellbinding component set Allowed content at all auxiliary levels to: Link to outside desc md (discovering help, index record) Link to inner desc md Limitation: inward graphic component set unrefined, UCB driven

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MOA2.DTD Features Support for administration & protection Defined its own specialized, source and rights md component sets Provided for connecting content records with these components Provided for implanting content records specifically in a MOA2 question Limitations: administrator component sets preparatory and fragmented

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From MOA2 to METS Response to MOA2.DTD CDL embraces as its computerized question standard Other foundations attempt it Focus on chronicled materials with picture/content substance felt to be excessively constrained Still, went far towards addressing a need DLF financed modification handle: Work started February 2001 Participants included LoC, NYU, Harvard, UC, Stanford, OCLC, RLG, MetaE (EU), et al Outcome: METS blueprint Jerry McDonough still the foremost designer

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METS and MOA2 analyzed Support for substance and structure Expands content record bolster: any substance Supports Audio and Video content No longer centered around authentic materials Enhances bolster for connections amongst structure and substance: METS basic divisions can connection to: Integral records Parts of documents (characterized by directions/shapes, time parms, labels/ids) Sets of records or parts of documents that must be played in grouping Sets of documents or parts of records that must be played in parallel Other basic divisions in non-various leveled, hypertext mold

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METS and MOA2 looked at Support for disclosure & portrayal Eliminates the MOA2 characterized clear component set Provides wrapper for remotely characterized enlightening component sets Assumption: distinctive groups need to build up claim component sets for depiction Numerous XML based engaging component sets now accessible or in advance: MarcXML, MODS, DC, and VRA.

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METS and MOA2 analyzed Support for administration & safeguarding Eliminates MOA2 characterized managerial components Provides wrappers for remotely characterized authoritative components Provides 4 sorts of administrator wrappers: tech md, source md, computerized provenance md, and rights md Assumption: distinctive groups need to build up possess specialized and rights component sets

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METS in real life Institutions utilizing METS U.S: Library of Congress, California Digital Library, Harvard, MIT, RLG, NYU, Stanford, Florida Center for Library Automation, Berkeley Art Museum, Philadelphia Museum of Art, Indiana University Digital Library Program, et al International: University of Alberta, Oxford, British Museum, Göttinger Digitalisierungs-Zentrum, National Library of Wales, National Library of Portugal, University of Graz, Biblioteca Digitale P. Pale skinned person, et al

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METS in real life Digital vault frameworks utilizing/supporting METS Greenstone (import and inward) Fedora (import and fare) Dspace (import, send out, potentially inner)

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Applications of METS Transfer sentence structure (SIP): trading advanced substance Dissemination punctuation (DIP): reason for introducing computerized substance to the end client Preservation language structure (AIP): reason for safeguarding computerized content in the long haul

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METS in setting Other substance bundling principles gauges IMS-CP Comes out the learning innovation group MPEG21 (DIDL) Coming out of business world More unique than METS XFDU (XML Formatted Data Units) Comes out of Consultative Committee for Space Data Systems Used METS as beginning stage Geared towards bundling/trade of logical datasets

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METS in setting Attempts to unite distinctive guidelines. IEEE activity: RAMLET Attempt to build up a reference model that will include the different substance bundling mappings, and encourage cross-strolling and future harmonization.

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Links METS landing page: http://www.loc.gov/principles/mets

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