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Clarifying Temporal Datasets

From: James Leigh <james@3roundstones.com>
Date: Mon, 13 May 2013 09:44:24 -0400
Message-ID: <1368452664.2171.19.camel@james-PBL21>
To: public-rdf-comments <public-rdf-comments@w3.org>
Hi all,

After reading over the current draft[1] I felt some clarification was
appropriate when introducing datasets. Graphs are clearly presented as
immutable, but when datasets are introduces in section 1.6 their
relationships to graphs are not clear. Below are my notes.

[1] https://dvcs.w3.org/hg/rdf/raw-file/default/rdf-concepts/index.html

In section 1.6 Working with Multiple RDF Graphs, I suggest the
relationship between datasets and graph be clarified. Particularly wrt
temporal changes. Perhaps the following might be better.

        An RDF dataset is a collection of RDF graphs. All but [at most]
        one of these graphs have [at least one] associated IRI. They are
        called named graphs, and the IRI is called the graph name. [One
        of the graphs is called the default graph of the RDF dataset and
        might] not have an associated IRI. [The graph name can be
        associated with at most one graph at a time, but that associated
        graph may change over time. The dataset's collection of graphs
        and associated IRIs may also change over time].

In section 3.3 Literals, the regex expressions include an '@' prefix,
however, the spec never mentions what this '@' is for nor do language
tags support an '@' at all. ;)

In section 5.5 The Value Corresponding to a Literal, It says they "MUST
accept ill-typed literals". I believe that should be changes to "SHOULD
accept ill-typed literals", since earlier it says they SHOULD NOT reject
them.

Regards,
James
Received on Monday, 13 May 2013 13:44:51 UTC

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