These are called Metadata Application Profiles and you can read about them on this good Wiki page by Cornell Univ. Library staff: https://confluence.cornell.edu/display/mwgweb/CUL+Metadata+Application+Profiles. As noted on that page, A popular metadata application profile example is the Digital Public Library of America Profile: https://dp.la/info/wp-content/uploads/2015/03/MAPv4.pdf which has a machine-actionable representation here: https://github.com/dpla/dpla_map.
Often, MAPs are created when you have a implementation need for combining metadata from different schema into one cohesive schema for local use ... so the MAP not only contains "how we use this field for this profile" but mappings of that data field to similar / related metadata schema to help with crosswalking data that may already exist in your system.
Kari R. Smith
Institute Archivist and Program Head, Digital Archives
Institute Archives & Special Collections, MIT Libraries
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
IASC office: 617.258.5568 http://libraries.mit.edu/archives/
she | her | hers @karirene69 [smithkr at mit.edu]
From: Code for Libraries [mailto:[log in to unmask]] On Behalf Of Karen Coyle
Sent: Tuesday, October 10, 2017 5:21 PM
To: [log in to unmask]
Subject: [CODE4LIB] Needed: some metadata documentation examples
Hello, all. I'm working on some projects where we are trying to define formats and guidance for metadata *profiles*. You may have seen the profiles that were created at one point for BIBFRAME (I can't find them at the moment on the new site) - they were more "list-like" than the fancy BF-lite site, but mostly the same idea. Profiles often are a simple list of data elements or properties, sometimes with a bit more info like cardinality.
What I want to find are some examples of documentation aimed at those creating the metadata records that explain what goes into the metadata, and hopefully some rules like "this has to be a date in the format yyyy-mm-dd". I'm guessing that folks using systems like contentDM may have something of this nature. Obviously, the whole RDA enchilada would be way too much to chew on at this point. If you can point me to documentation that you have created or use, I would appreciate it. If I decide to do more with it than ruminate I will let you know.
I want to note that part of the goal is to link metadata schema documentation and metadata user documentation with a validation language like ShEx. If you want to know more, ping me, but we should have more to say after the Dublin Core meeting in D.C. later this month, where we are having a whole day on profiles, Oct 27, called "taming the graph".
 You can find some profiles based on the W3C standard DCAT here:
https://www.w3.org/2017/dxwg/wiki/Main_Page#Non-W3C_Documents, and you may find some other interesting links on that page.
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