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The Linked Data for Production (LD4P) project has finished its first phase (2016-2018). Full information is on this website including new links to LD4P Outputs. The next phase, Linked Data for Production: Pathway to Implementation (LD4P2) is underway.


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Welcome to the website of Linked Data for Production (LD4P). With support from the Andrew W. Mellon Foundation, six the LD4P partners (Columbia, Cornell, Harvard, Library of Congress, Princeton, and Stanford UniversityDirectory of team members) are piloting the transition production of technical services workflows to a linked data environmentfor library resources. Over a two-year period , the partners will focus on developing the ability to (2016-2018), our work focuses on:

  • developing standards, guidelines, and infrastructure to communally produce metadata as linked open data
  • ,
  • developing end-to-end workflows to create linked data in a technical services production environment, 
  • extending the BIBFRAME ontology to
encompass the many resource formats managed by libraries
  • describe library resources in specialized domains and formats, and
  • engaging the broader library community to ensure a sustainable and extensible environment.
LD4P works closely with

While each partner institution leads its own domain-specific ontology extension and metadata production projects, the partners collaborate closely with one another and with the Mellon-


funded Linked Data for Libraries-Labs

project. Horizontal Navigation Bar Horizontal Navigation Bar Page

Current activities of the LD4P partners as of February, 2017

Analysis and Modeling

At the end of 2016 the group, together with LD4L-Labs, completed many months of intense ontology work, evaluating BIBFRAME and developing recommendations for implementing and extending BIBFRAME. We are documenting the decisions that came out of the modeling effort, including application profiles and mappings; these outputs will be shared with the community in coming months.

The domain-specific ontology extension subgroups have been working on gathering requirements and use cases, evaluating existing ontologies and vocabularies, modeling extensions, and developing application profiles.

Tool Evaluation

Tool evaluation is underway, and we’ve started a Tool Registry. We are working closely with LD4L-Labs to define requirements for and provide feedback on a MARC-to-linked-data converter and on the VitroLib linked data editing tool.

Community Engagement

LD4P members have been speaking at several conferences in the library and semantic web world. In April of this year we will hold an invitational conference at Stanford University to present current work and discuss future directions.

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titleLinked Data Modeling
Tabs Container
Tabs Page
titleBIBFRAME Extension
Include PageBIBFRAME and LD4P/L-Labs ExtensionBIBFRAME and LD4P/L-Labs Extension Tabs Page
Include PageArtFrameArtFrame Tabs Page
titleCartographic Extension
Include PageCartographic ExtensionCartographic Extension Tabs Page
titlePerformed Music Ontology
Include PagePerformed Music OntologyPerformed Music Ontology Tabs Page
titleRare Materials Ontology
Include PageRare Materials Ontology ExtensionRare Materials Ontology Extension Tabs Page
titleMoving Image Extension
Include PageMoving Image ExtensionMoving Image Extension 



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titleMetadata Production
Tabs Container
Tabs Page
titleColumbia Art Properties
Include PageColumbia Art PropertiesColumbia Art Properties Tabs Page
titleCornell Hip Hop Archive
Include PageCornell Hip Hop ArchiveCornell Hip Hop Archive Tabs Page
titleHarvard Cartographic Materials
Include PageHarvard Cartographic MaterialsHarvard Cartographic Materials Tabs Page
titleHarvard Film Archive
Include PageHarvard Film ArchiveHarvard Film Archive Tabs Page
titleLibrary of Congress
Include PageLibrary of Congress Metadata ProductionLibrary of Congress Metadata Production Tabs Page
titlePrinceton Derrida Archive
Include PagePrinceton - Project UpdatesPrinceton - Project Updates Tabs Page
titleStanford Tracer Bullets
Include PageStanford Tracer BulletsStanford Tracer Bullets  Horizontal Navigation Bar Page
Include PageOutcomesOutcomes
Horizontal Navigation Bar Page
titleWho is LD4P

LD4P partners

Columbia University ArtFrame | Columbia Art Properties

Cornell University Rare Materials Ontology | Cornell Hip Hop Archive

Harvard University Cartographic Extension | Harvard Geospatial Data | Harvard Film Archive | Moving Image Extension

Library of Congress Library of Congress BIBFRAME

Princeton University Princeton Derrida Archive

Stanford University Performed Music Ontology | Stanford Tracer Bullets

Directory of all team members

Questions and comments: contact ld4p-program at stanford dot edu

Horizontal Navigation Bar Page
titleLearn More
Include PageLearn MoreLearn More


Horizontal Navigation Bar Page
titleRelated Work


 (LD4L-Labs) project on modeling a general-purpose extension to BIBFRAME, developing best practices for ontology extension modeling and for linked data production, evaluating linked data tools, and prototyping an infrastructure for cooperative production of linked data.

Cross-domain ontology modeling and metadata production

Domain-specific ontology modeling and metadata production

Advanced Tables - Table Plus


LD4P provides input to the Linked Data for Libraries-Labs (LD4L-Labs) project on the development of VitroLib, a linked data editor for libraries, and the LD4L-Labs Converter. LD4P is evaluating several other linked data tools (see our Registry of Tools), including the Library of Congress BIBFRAME Editor and Converter. Coming soon: Linked Data Editor Requirements and Evaluations.

The Biblioportal ontology repository is a library-specific implementation of Stanford University's BioPortal.

Learn More

Contact Us

email ld4p-program at stanford dot edu