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BIBFRAME is a linked data model, developed by the Library of Congress, for expressing and connecting bibliographic data. It was developed by the Library of Congress to eventually replace the MARC format, and to serve as "the library community’s formal entry point for becoming part of a much larger web of data, where the links between things are paramount."

Building on earlier analysis done by the Linked Data for Libraries (2014-2016) project, LD4P and LD4L-Labs conducted an in-depth evaluation of BIBFRAME 2.0, developing recommendations for implementing and extending BIBFRAME. Many of these recommendations have already been adopted by the Library of Congress and are reflected in BIBFRAME 2.0.

We are documenting bibliotek-o modeling decisions, including Created by the LD4L Labs and LD4P Ontology Group, bibliotek-o, represents an extension and as well as deviation from BIBFRAME 2.0 in key modeling areas ; these areas are defined in our recommendation as discussed in pattern and principle documents.

Further, we are producing the LD4L Labs and LD4P Ontology Group is producing an application profiles , and MARC mappings to define logic for implementation of the target ontologies for LD4P's use of RDF instance editors as well as MARC2RDF conversion.

As work begins on our metadata production projects, we will continue to develop recommendations for best practices in implementing BIBFRAME.

bibliotek-o deliverable focus on the ontology itself as well as , including:

• bibliotek-o
• bibliotek-o OWL representation
• bibliotek-o Github Repository
• BIBFRAME 2.0 + bibliotek-o mapping to MARC (in-progress)
• Application profile (in-progress)
• Sample RDF

Modeling Pattern Documents

• Activities
• Content Accessibility
• Content Type, Carrier Type and Media Type
• Identifiers
• Legacy Literals (URL coming soon)
• Notes and Annotations
• Relations
• Titles

Principle Documents

• External Ontology Reuse
• OWL versus RDFS
• Object versus DataType Properties (URL coming soon)