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Subject: Accounting for public comments on XRI Syntax 2.0
Mary: Per section 3.4(g) of the OASIS TC process (http://www.oasis-open.org/committees/process.php#3.4), following is an accounting for the public comments received by the XRI TC on the XRI Syntax 2.0 specification during the following review periods: 1) XRI Syntax 2.0 Committee Draft 01 had a 30-day public review starting March 15, 2005, with a 17-day extension starting April 13, 2005, ending April 30, 2005. The announcement was published at: http://lists.oasis-open.org/archives/tc-announce/200503/msg00005.html 2) XRI Syntax 2.0 Committee Draft 02 had a 15-day public review starting 18 October 2005, ending 2 November 2005. The announcement was published at: http://lists.oasis-open.org/archives/tc-announce/200504/msg00004.html The following comments were received during the first public review period on XRI Syntax 2.0 Committee Draft 01 (note that this public review period also included XRI Resolution 2.0 Committee Draft 01 and XRI Metadata 2.0 Committee Draft 01.) #1) Jerome Jump, Epok http://lists.oasis-open.org/archives/xri-comment/200503/msg00000.html #2) Dan Connolly, W3C http://lists.oasis-open.org/archives/xri-comment/200504/msg00000.html #3) W3C Technical Architecture Group (TAG) http://lists.oasis-open.org/archives/xri-comment/200504/msg00003.html http://lists.oasis-open.org/archives/xri-comment/200505/msg00000.html #4) Mark Baker, Coactus http://lists.oasis-open.org/archives/xri-comment/200504/msg00004.html One comment was received during the second public review period on XRI Syntax 2.0 Committee Draft 02: #5) Norm Walsh, Sun http://lists.oasis-open.org/archives/xri-comment/200510/msg00000.html XRI TC RESPONSE Comment #1 from Jerome Jump of Epok was relative to the XRI Resolution 2.0 specification, which is a not at this time being submitted for consideration as an OASIS Standard. Mr. Jump pointed out one minor errata and suggested alternative formatting of the XML examples in the specification. Both of these have been incorporated in a subsequent working draft of XRI Resolution 2.0. Comment #2 from Dan Connolly of the W3C made the suggestion that the OASIS XRI TC should register "xri:" as a URI scheme with the IETF as part of preparing for wide deployment. Technically the XRI Syntax 2.0 specification creates a new identifier that has a defined transformation into an IRI normal form and a URI normal form. The XRI TC does intend to pursue IETF registration of the xri: scheme for XRIs in IRI and URI normal form once XRI Syntax 2.0 reaches OASIS Standard status. Comments #3 from the W3C TAG, and subsequently shared by comment #5 from Norm Walsh, is discussed below. Comment #4 from Mark Baker was a very brief statement against the deployment of any new abstract identifier scheme and favoring reuse of the http URI scheme. The W3C TAG's comments focused almost exclusively on the use of XRIs to solve the problem of persistent identification of resources. With regard to this requirement, the TAG stated: "The recommendations that we have documented in Architecture of the World Wide Web, Volume One state that "A specification SHOULD reuse an existing URI scheme (rather than create a new one) when it provides the desired properties of identifiers and their relation to resources." [1] In this case, a properly managed and supported use of the existing http scheme, based on the excellent analysis in your documents, does have the desired properties and can provide the same functionality without the loss of interoperability which would accompany a new scheme." The XRI Requirements document [2], produced by the XRI TC in June 2003, enumerates seven categories of requirements for uniform abstract identifiers, i.e., identifiers that provide a consistent, interoperable means of identifying resources independent of domain, location, application, and means of interaction. The http URI scheme does not meet these requirements, specifically because most http URIs are concrete identifiers (identifiers tied to a particular domain, directory, application, or device) and all http URIs have by definition a specific method of interaction (http). Another key requirement for uniform abstract identifiers not supported by http URIs or other URI schemes is uniform cross-context identification -- the ability to share identifiers across hierarchies (different domains and applications) with consistent interpretation (a directory concept known as polyarchy.) XRI Syntax 2.0 provides a specific construct -- cross-references -- for this purpose. Cross-references are particularly useful for identifier metadata; so useful that the XRI TC publishes a separate specification (XRI Metadata) for the purpose of establishing uniform metadata for expressing the language, date, and version of an identifier [3]. Since the public review of XRI Syntax 2.0 Committee Draft 01 in March, new participants including Boeing have joined the XRI TC expressly for the purpose of developing interoperable identifier type metadata using XRI cross-references. XRI Syntax 2.0 was developed over three years to meet all seven categories of requirements for uniform abstract identifiers. The XRI TC is pleased to submit it to OASIS membership for consideration as an OASIS Standard. [1] http://www.w3.org/TR/2004/REC-webarch-20041215/#URI-scheme [2] http://www.oasis-open.org/committees/download.php/2523/xri-requirements-and- glossary-v1.0.doc [3] http://www.oasis-open.org/committees/download.php/11854/xri-metadata-V2.0-cd -01.pdf [4] http://lists.oasis-open.org/archives/xri/200509/msg00048.html
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