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Bibframe

Resources are the things that Library.Link connects
​
The Library.Link Network creates Bibframe resources and describes how they connect using Bibframe relationships. A resource is the most generic Bibframe entity. Key Bibframe resource types include:
​Works are distinct intellectual or artistic creations
​Instances are resources that reflect an individual, material embodiments of works
​Items are specific, individual, material embodiments of distinct instances
​Agents are resources associated with Works, Instances, Items, and Events. Agent types include Person, Family, Organization, Meeting, Archive, Museum, Library.
​Events are significant occurrences or happenings
What is Bibframe?
​Bibframe is a data model used for bibliographic description. The Library of Congress began the Bibliographic Framework Initiative to make library data accessible on the open Web.
The Library.Link Network uses a modular, layered approach with Bibframe Lite and extends Bibframe for specific purposes. Extensions include:
​Bibframe Lite + Library​
Used to express classes and properties found in library data. This extension drives many of the rules in Library.Link's MARC to Bibframe transformation pipeline. 
​Bibframe Lite + Relation​
Used to express relationships between works, people, and other resource types. Primarily derived from MARC relator codes (https://www.loc.gov/marc/relators/relaterm.html).
​Bibframe Lite + Archive​
Used to describe collections managed by archives
The Zepheira team at EBSCO updates these data models in partnership with Library.Link Network participants who provide feedback and propose new use cases.
Bibframe Lite Classes
​Agents are entities associated with a resource (Person, Family, Organization, Meeting, Archive, Museum, Library)
​Annotations are loosely attached information about a resource
​Archives are organizations responsible for the documents, photos, rare books, and artifacts selected for access and preservation
​Authorities are credible, curated description of a resource (People, Places, Concepts, etc.)
​Categories are groups of things regarded as having particular shared characteristics
​Collections are aggregations or gatherings of works
​Concepts are terms describing the subject, aboutness, idea or notion of a resource
​Copyright Events are when copyright registration occurs
​Events are significant occurrences or happenings
​Families are social groups related by birth, marriage, adoption, civil union, or similar relationship
​Forms are categories or genres that describes what a resource is (example Forms include art, books, biographies, and academic theses)
Identifiers are strings or numbers that identiy either a unique resource or class of resources (example IDs include ISBN, ISSN, and MESH)
​Instances are resources that reflect an individual, material embodiments of works
​Items are specific, individual, material embodiments of distinct instances
​Language Categories are lists or controlled vocabularies used to describe languages
​Libraries are organizations responsible for the care of a collection of literary, musical, artistic, or reference materials, such as books, manuscripts, recordings, or films
​Lists are ordered or unordered groups of related resources
​Meetings happen when people gather for a particular purpose
​Museums are organizations that hold artifacts and other objects of scientific, artistic, cultural, historical, or other importance
​Organizations are units of people (like an institution, association, or corporate body)
​People are individuals (alive, dead, undead, or fictional) that are related to resources
​Places are geographic locations
Postal Address
​Provider Events are associated with the publication, printing, distribution, issue, release or production of an instance
Series
​Temporal resources denote context for the chronological continued progress of existence and events in the past, present, and future
​Topics are specific subject terms describing the aboutness of a resource
​Works are distinct intellectual or artistic creations
Resource IDs
Each Bibframe resource in the Library.Link Network has a resource ID. For example, the fingerprint for this Person bell hooks is NZoOFvP4VSE 
<https://uea.library.link/resource/NZoOFvP4VSE/>
hooks, bell, 1952- (Person) - University of East Anglia Library
Each resource ID is generated based on a group of properties. Fingerprints for bf:Person include bf:type (http://bibfra.me/vocab/lite/Person) bf:date and bf:name. 
Name Disambiguation
Unique fingerprints are created for each person using a set of variables including the person's name. If there are any differences in names or birth/death dates then different resource IDs are created. Common differences in person resources include punctuation, capitalization, and spelling of names as well as any differences in birth or death dates. 
Let's look at a few examples from the University of Melbourne's data graph. 
The author bell hooks with an LCNAF authority link and no death date: https://unimelb.library.link/resource/ydwiTeVjoMY/​
The author bell hooks with an occupation and a death date: https://unimelb.library.link/resource/YW3h26ipxlo/​
Notice how these two resource IDs are different. To make connections between two resource IDs that refer to the same person, libraries use alternativeID relationships:
    "alternativeId": [
        "http://library.link/resource/owOOylsTw-A",
        "http://library.link/resource/wMXjZhRyEqE",
        "http://library.link/resource/G7tf8Gf8rR4",
        "http://library.link/resource/yl-DsYWNtj0",
        "http://library.link/resource/Zdwo2K-rTSc",
        "http://library.link/resource/KKaOhoxqMUs",
        "http://library.link/resource/fLrO0tOxjQ4",
        "http://library.link/resource/CJrBmTjGP-U",
        "http://library.link/resource/NZoOFvP4VSE",
        "http://library.link/resource/pjb5AsfsjWI",
        "http://library.link/resource/o3XOGsnnOXo",
        "http://library.link/resource/aBasknpzbTs",
        "http://library.link/resource/Uvn0rExLRaU",
        "http://library.link/resource/DmEIYStasXo",
        "http://library.link/resource/yglY_KN5Un0",
        "http://library.link/resource/rDqRhsc25hE",
        "http://library.link/resource/QI5tQvpl-yY",
        "http://library.link/resource/bg2AWUFS2gM"
    ],
Libraries also map resources to WikiData entities to cluster groups of resources. To see bell hook's alternativeIDs and WikiData mapping, view her Network level data here: http://library.link/resource/ydwiTeVjoMY/feed.json​
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