[Webforum] Fwd: Efficient XML Interchange (EXI) Format 1.0 is a W3C Recommendation

[Kang-Hao (Kenny) Lu]

EXI 成為 W3C 推薦標準！

-------- Original Message --------
Subject: 	Efficient XML Interchange (EXI) Format 1.0 is a W3C
Recommendation
Resent-Date: 	Thu, 10 Mar 2011 18:11:18 +0000
Resent-From: 	w3c-ac-members at w3.org
Date: 	Thu, 10 Mar 2011 12:11:15 -0600
From: 	Ian Jacobs <ij at w3.org>
To: 	W3C Members <w3c-ac-forum at w3.org>



Dear Advisory Committee Representative,

I am pleased to announce that Efficient XML Interchange (EXI) Format  
1.0 has been published as a W3C Recommendation:

   Efficient XML Interchange (EXI) Format 1.0
   http://www.w3.org/TR/2011/REC-exi-20110310/

The Efficient XML Interchange Format (EXI) is an XML-aware compression  
format. It can take advantage of XML Schema information, and, unlike  
generic compression systems such as gzip, starts out with knowledge of  
XML.  EXI is already seeing adoption in communications between small  
devices, and is also being used for large datasets in the sciences, as  
well as for general XML and Web usage.  Most applications do not need  
to be changed in order o benefit from EXI.

All Members except one who responded to the Call for Review [1] of the  
document supported the publication as-is of this specification as a  
W3C Recommendation. There was one request for editorial changes to the  
references, which were accepted where possible.

In addition, the EXI test suite has been made public from the Working  
Group page [2].

Please join us in congratulating the Efficient XML Interchange Working  
Group [2] for their achievement.

For Tim Berners-Lee, Director;
Ian Jacobs, Head of W3C Communications.

[1] http://www.w3.org/2002/09/wbs/33280/exipr2011/results
[2] http://www.w3.org/XML/EXI/

------------------------
Disposition of Comments
------------------------

One reviewer requested an update to references to ISO 10646, XML  
Names, Relax NG ISO/IEF 1957-2:2008 and SOAP. Of these, ISO 10646 was  
not yet final at the time of publication of this Recommendation, but  
the other changes
were checked and did not affect the format, and so were accepted.

The same commenter also asked about the Primer; work on this document  
and on a public FAQ are active and ongoing.

Overall, the W3C Advisory Committee showed strong support for this  
specification to be published as a W3C Recommendation.

--------
Abstract
--------

This document is the specification of the Efficient XML Interchange  
(EXI) format. EXI is a very compact representation for the Extensible  
Markup Language (XML) Information Set that is intended to  
simultaneously optimize performance and the utilization of  
computational resources. The EXI format uses a hybrid approach drawn  
from the information and formal language theories, plus practical  
techniques verified by measurements, for entropy encoding XML  
information. Using a relatively simple algorithm, which is amenable to  
fast and compact implementation, and a small set of datatype  
representations, it reliably produces efficient encoding of XML event  
streams. The grammar production system and format definition of EXI  
are presented.

--
Ian Jacobs (ij at w3.org)    http://www.w3.org/People/Jacobs/
Tel:                                      +1 718 260 9447






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