Re: [urn] CTS and CITE2 URNs

"Hakala, Juha E" <juha.hakala@helsinki.fi> Thu, 07 March 2019 07:10 UTC

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From: "Hakala, Juha E" <juha.hakala@helsinki.fi>
To: "Dale R. Worley" <worley@ariadne.com>, Peter Saint-Andre <stpeter@stpeter.im>
CC: "urn@ietf.org" <urn@ietf.org>
Thread-Topic: [urn] CTS and CITE2 URNs
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Date: Thu, 7 Mar 2019 07:10:12 +0000
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Subject: Re: [urn] CTS and CITE2 URNs
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Hello, 

detailed CTS URN syntax specification and examples at 

http://cite-architecture.github.io/ctsurn_spec/

are helpful, at least for a librarian, although URN like 

urn:cts:greekLit:tlg0012.tlg001.hmt01:10.4@Atreus-10.10@trembling

does make even me tremble a bit ;-).  

The specification is based on RFC 2141 (it is dated February 2014). It might be a good idea to check if this version (2.0.rc.1) could benefit in one way or another from being made RFC 8141 -compliant. These URNs will not be actionable so it does not really matter if subreferences are treated as URN F-components (as I suggested) or not, but if the specification can easily be made more compliant with the current URN syntax, it would make no harm. 

Non-ascii characters in subreferences would be an issue if urn:cts and urn:cite2 provided resolution services. But that is not an intention, and since these URNs are intended mainly for humans, I would rather leave non-ascii chars un-encoded although that is against RFC 8141 (but not RFC 2141, if I remember correctly).     

Best, 

Juha

-----Original Message-----
From: urn <urn-bounces@ietf.org> On Behalf Of Dale R. Worley
Sent: torstai 7. maaliskuuta 2019 5.56
To: Peter Saint-Andre <stpeter@stpeter.im>
Cc: urn@ietf.org
Subject: Re: [urn] CTS and CITE2 URNs

Comments on these registrations:

As Julian points out, using '#' as part of the URN assigned-name is not allowed.


CTS URN registration

   CTS URNs provide permanent, canonical, scholarly references to
   texts or passages of text associated with the unique cultural
   phenomena that humanists study.

s/unique cultural phenomena/cultural phenomena/ -- I can't see any manner in which the enormous number of humanistic phenomena are each "unique".

   Syntax:

   The general structure of a CTS URN is as follows:

   urn:cts:SUBNAMESPACE:WORK:PASSAGE@SUBREFERENCE

   ...

   A detailed definition of CTS syntax can be found at:

   http://cite-architecture.org/ctsurn/

Unfortunately, neither this registration nor the pointed-to syntax definition gives an exact description of the syntax.  E.g., at every location where I noticed a part of the syntax described as "optional", there was no exact statement regarding what adjacent separating characters could or could not be omitted.  BNF is necessary.

   o An optional passage reference refers either to an individual
     passage or to a range of passages within a work. [...]

   o An optional subreference identifies a span within a single
     citation unit using indexed substrings. [...]

No assignment process is specified for either of these components.


CITE2 URN registration

All of the above comments for CTS URN apply to CITE2 as well.

   Documentation:

   More detailed information about CTS URNs and the CTS architecture
   can be found at:

Was "CITE2" intended here rather than "CTS"?


Dale

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