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BIBFRAME  June 2014

BIBFRAME June 2014

Subject:

Re: Comments on BIBFRAME Profiles

From:

"Ford, Kevin" <[log in to unmask]>

Reply-To:

Bibliographic Framework Transition Initiative Forum <[log in to unmask]>

Date:

Mon, 9 Jun 2014 10:06:57 -0400

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text/plain

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text/plain (1 lines)

Thanks, Lars, for the feedback.  Comments in line below.

Yours,
Kevin


> -----Original Message-----
> From: Bibliographic Framework Transition Initiative Forum
> [mailto:[log in to unmask]] On Behalf Of Svensson, Lars
> Sent: Saturday, June 07, 2014 3:30 AM
> To: [log in to unmask]
> Subject: [BIBFRAME] Comments on BIBFRAME Profiles
> 
> All,
> 
> First of all thank you for your work on the BIBFRAME Profiles. I think the
> notion of profiles will be increasingly important in the library community, and
> perhaps particularly for an exchange format like BIBFRAME that is not tied to
> a specific cataloguing code. I see some overlap with the work being done on
> RDF application profiles so I copy the DCMI Architecture List.
> 
> Having studied the document on BIBFRAME Profiles [1] I have some
> questions and hope that someone can shed some light here.
> 
> §2.2 Resource Template
> How do the resourceURI and the resourceLabel relate to each other? My first
> understanding was that the resourceLabel is the label of the resource
> available at the resourceURI (and thus available by dereferencing the
> resourceURI). In the example (Fig 2.2a), however, there is the resourceLabel
> Book” and the resourceURI http://bibframe.org/vocab/Text (which is not a
> book). Can you please expand a bit on this in the document?


-- When Bibframe Profiles are used as cataloging templates, which is how they are used presently but with additional future uses to be considered (there has been some "validation" talk, but very little and very inconclusive), it is possible to alter the "labels" of classes/resources and properties for specific user communities.   For example, with a Bibframe Profile, you could use the label "Number of pages" with the property bf:extent, which, in the vocabulary, has a "Extent" as its label.  For the specific community cataloging a book, "Number of pages" is more descriptive about what is expected to be entered into the field versus "Extent."  So, in the example above, "bf:Text," which has a label of "Text" in the vocabulary, would display to the user as "Book" in the editor, where Bibframe Profiles act as cataloging templates.  Does this help clarify the idea a little?


> 
> §2.4 Value Constraint
> Here, too, there is confusion regarding the relation between *URI and *label.
> The preferred way to express values or relations should always be URIs or –
> if not available – codes (e. g. ISO 639 language codes).
> 
> The value constraint “editable” specifies as value “URI”. Shouldn’t that be
> “Boolean”?

-- That's a mistake and needs to be corrected.  Thanks for pointing it out.


> 
> §2.5 Value datatype
> Is there a reason not to use the XML schema datatypes, where applicable,
> and to define RDF/OWL datatypes (subclass of rdfs:Datatype and OWL
> Restrictions) when you need new ones? In Figure 2.5, you could just specify
> xsd:date.

-- Actually, "defaultURI" could be "http://www.w3.org/1999/XMLSchemadate" if you wanted it to be.  "xsd" is just a namespace prefix after all.   Anyways, Eric and all could provide more details about what was intended but the text indicates that the ISO8601 date would be "a variation on the ISO 8601 date standard," which is why, I presume, xsd:date was not used.

> 
> §4 Serialisation
> Is there a reason to restrict the available serialisations? In general you could
> say that any existing (RDFXML, Turtle, N-Triples, JSON-LD, …) or future RDF
> serialization is acceptable in BIBFRAME? And yes, examples please in Turtle.

-- Just to be clear: Serialization here refers to serialization of a Bibframe Profile, not Bibframe resource data itself.  Correct, if Bibframe Profiles were expressed inTurtle then presumably any RDF serialization would also be viable.  Personally, I think pushing the Profile spec into Turtle would result in some unwieldy RDF, but I'd have to see it to know.


> 
> §6.1 Default BIBFRAME Profile
> Here I don’t understand what you mean by saying “Human readable labels
> for the display are extracted from the RDF schema associated with the class
> identifiers”. Which “class identifiers” do you refer to? And: If you can extract
> the label by dereferencing a URI, why repeat it in the profile?

-- The answer here is more or less the same as given in response to your comment about section 2.2 above.  The "class identifiers" are the resourceURIs and propertyURIs, which refer to classes and properties defined in the Bibframe vocabulary.  We can probably come up with a better way to refer to these instead of using "class identifiers," which is to say that I see the confusion.  The "human readable labels" are the values you see in that example associated with the resourceLabel and propertyLabel properties.  Looking at the example, however, "resourceLabel: Book" should really be resourceLabel: Text."  The idea was to use the same labels in the profile as used in the vocabulary, but - as with my comment above - it is a profile creator's choice to use whichever label he or she wants to use for a resource or property in a Profile.  For example, since the "author" property is repeatable, the Profile label could be "Author(s)" instead of the singular "Author," which /is/ the property's actual label, so that the cataloger would know more than one is permissible.  It’s a feature.

> 
> In the example you use the domain name “examplelib.org”. In order to make
> sure that you do not (by accident) use a domain name actually used by
> someone, it would be better to use the domains example.com or
> example.org or their subdomains, e. g. library.example.org.

-- OK, but can we agree this is a pretty minor point?  :) It's used twice, both as part of a dummy email address within a note field, not as part of a resource/property URI.

> 
> §6.2 RDA as a BIBFRAME Profile
> Shouldn’t the frbr:Item map to bf:HeldItem instead of to bf:Instance?

-- Yes, we'll have to get the graphic updated.


> 
> [1] http://www.loc.gov/bibframe/docs/bibframe-profiles.html
> 
> Thanks for any insights,
> 
> Lars
> 
> *** Lesen. Hören. Wissen. Deutsche Nationalbibliothek ***
> --
> Dr. Lars G. Svensson
> Deutsche Nationalbibliothek
> Informationstechnologie
> Telefon: +49-69-1525-1752
> mailto:[log in to unmask]
> http://www.dnb.de
> 

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