NDLI: Link It or Don't Use It: Transitioning Metadata to Linked Data in Hydra

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Link It or Don't Use It: Transitioning Metadata to Linked Data in Hydra

Content Provider	Semantic Scholar
Author	Estlund, Karen Johnson, Tom R.
Copyright Year	2013
Abstract	e University of Oregon Libraries and Oregon State University Libraries have been successfully collaborating on a digital asset management system for four years, OregonDigital.org. OregonDigital.org holds diverse collections of digital archival materials from art slides to faculty research to traditional digitized and born-digital archival collections. In addition, we host unique collections from local government, historical societies, and museums. In preparation for a migration to a new platform, based on Hydra, we are re-evaluating the metadata schemas used in these collections and transitioning to an open interoperable framework. A key element in the transition to Hydra is a major metadata transformation from locally customized Quali ed Dublin Core, VRA Core 4.0, and MODS to Linked Data vocabularies with formal speci cations using RDFS, SKOS, and OWL. is poster presents our use of the property hierarchies included in RDF vocabularies to build interoperability into our Hydra metadata. Our implementation includes automated cross-schema indexing and intelligent display and navigation of properties unknown to the so ware. is large undertaking involves re-thinking metadata schemas created over een years by multiple institutions, as well as incorporating new elements, such as those from the DataCite schema. By utilizing existing linked data vocabularies and creating linked properties for additional elements, we are attempting one schema across content types and collections, yet is exible enough to continue to evolve with our needs. 0 2 4 6 8 10 12 14 16 18 10-14 15-19 20-24 25-29 30-34 35-39 40-44 45-49 50-54 55-59 60-64 65-69 Pre-Existing Metadata Fields Number of Metadata Fields N um be r o f C ol le ct io ns Over 300 di erent metadata elds across 60 digital collections. Mapping Metadata Fields Inventory of elds by collection Map to established open linked term De ne linked term & host at Oregon Digital triplestore Term/ eld not mapped Example Mappings Sample Record "Agricultural laborers-Housing-Oregon" . . "Agricultural laborers-Mexican-Oregon" . . "Silver gelatin prints" . . "Permission to use must be obtained from OSU Archives." . . "2011-12-19" . . "P020_0791" . . "P20:791" . . "Extension Bulletin Illustrations Photograph Collection (P20)" . . "oregondigital:braceros" . . "ca. 1942-1947" . . "Farm workers at their camp" . . "Image" . . "Copy negative" . . "2004-03-17" . . "Master scanned with Epson 1640XL scanner at 600 or 800 dpi. Image manipulated with Adobe Photoshop ver. 7.0." . . "Hood River County (Ore.)" . . "Mexican farm workers pose in camp, Hood River." . Values in unmapped elds are kept in datastream for original metadata record Prototype View Add to mapping.yml le image_title: dct:title digital_collection_title: dct:isPartOf photographer: marcrel:pht date: dct:date date_created: dct:created date_modi ed: dct:modi ed description_notes: dct:description subject: dct:subject object_type: dct:type original_format: mads:physicalDescription original_collection: mads:Collection item_number: dct:identi er other_formats: dct:hasFormat geographic_subject: dct:spatial restrictions: dct:rights transmission_data: oregon:conversionSpeci cations item_url: dct:replaces full_resolution_: oregon:full le_name: premis:originalName title: dct:title caption_title: dct:alternative other_title: dct:alternative composer: marcrel:cmp lyricist: marcrel:lyr arranger: marcrel:arr original_place_of_publication: marcrel:pup original_publisher: dct_publisher original_copyright_holder: marcrel:cpc physical_description: modsrdf:physicalExtent physical_medium: dct:description notes: dct:description topic: dct:subject genre: modsrdf:genre cover_description: dct:description illustrator_artist: oregon:coverArtist lithographer_printer_engraver: marcrel:prm rst_line: oregon:sheetmusic/ rstLine rst_line_of_chorus: oregon:sheetmusic/ rsLineChorus larger_work: oregon:sheetmusic/largerWork repository: modsrdf:locationPhysical repository_collection: mads:Collection accession_or_call_number: modsrdf:locationShelfLocator type: dct:type rights: dct:rights format: dct:format date_of_publication: dct:date digitization_spec ciations: oregon:conversionSpeci cations date_of_digitization: oregon:dateDigitized digital_collection: oregon:set contentdm_ le_path: oregon:full Sample Vocabularies / Terms Used Available with URIs Available no URIs Oregon Speci c Terms Dublin Core MODS DataCite Premis MARC Relators Darwin Core VRA Core 4.0 Sheet Music Mountain West DL Western Waters DL Getty (in development) Set Full Resolution Associated Course
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://ir.library.oregonstate.edu/downloads/707959016?locale=en
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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