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Re: Refining enumerations -- is slash still appropriate?

From: Madeleine Rothberg <madeleine_rothberg@wgbh.org>
Date: Fri, 11 Dec 2015 14:12:42 +0000
To: "public-vocabs@w3.org" <public-vocabs@w3.org>
Message-ID: <D29043E5.1CCDC%madeleine_rothberg@wgbh.org>
Any feedback on this from schema organizers or experts?

Thank you in advance.

Madeleine

On 12/9/15 10:21 AM, "Madeleine Rothberg" <madeleine_rothberg@wgbh.org>
wrote:

>Previous participants in the Accessibility Metadata project [1] which
>proposed the accessibility properties now part of schema.org [2] are
>working on some additional proposals to improve metadata for accessible
>ebooks. We will provide a proposal for an additional property shortly.
>
>Today my question is about "extending" enumerations. The older,
>slash-based extension mechanism contains guidelines for extending
>properties, classes, and enum items [3]. However, the extension mechanism
>published in May 2015 covers only properties and classes [4]. How should
>extensions to enum items now be handled? For clarity, I suggest we call
>these "refinements" rather than extensions to avoid clashing with the
>concept of "extending schema.org" when we instead intend to "refine the
>meaning of an enum item."
>
>One specific refinement we would like to adopt is an enumeration of kinds
>of braille. Currently, the property accessibilityFeature has 29 expected
>values, and while this may increase, we prefer that it increase as slowly
>as possible. There are many types of braille, and as we look at use cases
>for accessible books, we'd like to have a notation such as:
>braille/grade1
>braille/grade2
>braille/ueb
>braille/nemeth
>
>And so on. This has the advantage of keeping the list of "core" expected
>values shorter as well as the advantage described in the older schema
>documentation [3] that tools that aren't aware of the full range of
>braille types "can at least partially understand [the] markup and use the
>data appropriately."
>
>Is this an appropriate notation to add to the enum items of a property? If
>not, is there a recommended way to do this for schema.org? In either case,
>what is the best process for getting these approved for addition to the
>WebSchemas page [2]?
>
>Thank you,
>Madeleine
>
>[1] http://www.a11ymetadata.org/
>[2] http://www.w3.org/wiki/WebSchemas/Accessibility
>[3] https://schema.org/docs/old_extension.html
>[4] https://schema.org/docs/extension.html
>
>-----
>Madeleine Rothberg
>Senior Subject Matter Expert
>National Center for Accessible Media at WGBH
>http://ncam.wgbh.org
>madeleine_rothberg@wgbh.org
>
>
Received on Friday, 11 December 2015 14:13:14 UTC

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