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Re: Proposal to resolve ISSUE-1

From: Gregg Kellogg <gregg@kellogg-assoc.com>
Date: Tue, 1 Nov 2011 23:58:10 -0400
To: HTML Data Task Force WG <public-html-data-tf@w3.org>
Message-ID: <B6665983-EDF1-4949-BDA9-EA30DE84C7F6@greggkellogg.net>
The limited feedback so far on my previous proposal came down against using _contextual_ as the default property URI generation scheme, or even including it.

I'd like to get +1/-1 from people on resolving these issues:

1) A Microdata processor uses a registry (with undefined format and update procedure for now) to control the behavior of property URI generation.

2) A Microdata processor uses a registry (with undefined format and update procedure for now) to control the serialization of multi-valued properties.

3) One property URI generation strategy is _vocabulary_, which defines a common URI to use for creating URIs for items with an @itemtype which begins with the vocabulary URI
    e.g., @itemtype=http://schema.org/Person, @itemprop=name => http://schema.org/name.
    Also @itemtype=http://schema.org/Person/Deceased, @itempropt=name => http://schema.org/name

4) One property URI generation strategy is _type_, which defines creates property URIs by appending a the property name to the itemtype URI separated by a '#'
    e.g. @itemtype=http://microformats.org/hcard, @itemprop=name => http://microformats.org/hcard#name

5) On property URI generation strategy is _base_, which creates a property URI by using the portion of the itemtype URI up to and including the final '#' or '/'
    e.g., @itemtype=http://schema.org/Person, @itemprop=name => http://schema.org/name.
    Also @itemtype=http://schema.org/Person/Deceased, @itempropt=name => http://schema.org/Person/name

6) The default URI generation strategy is _base_.

7) One multi-valued property serialization strategy is _unordered_, which creates triples for multiple values with a common subject and predicate.

8) One multi-valued property serialization strategy is _list_, which places all values in an RDF Collection (rdf:List) as the object of a triple.

9) There is no _contextual_ URI generation strategy, and the Microdata to RDF property generation is lossy with respect to JSON, in that properties of untyped sub-items will result in the same URI, rather than being distinct.

Please give +1/-1/0 to each of the above statements.

Gregg
Received on Wednesday, 2 November 2011 03:59:00 GMT

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