W3C home > Mailing lists > Public > public-xml-core-wg@w3.org > September 2008

FW: Transition Announcement: Efficient XML Interchange format 1.0 Last Call

From: Grosso, Paul <pgrosso@ptc.com>
Date: Mon, 22 Sep 2008 10:29:43 -0400
Message-ID: <CF83BAA719FD2C439D25CBB1C9D1D3020CC263E3@HQ-MAIL4.ptcnet.ptc.com>
To: <public-xml-core-wg@w3.org>


-----Original Message-----
From: chairs-request@w3.org [mailto:chairs-request@w3.org] On Behalf Of
Carine Bournez
Sent: Friday, 2008 September 19 11:40
To: public-exi@w3.org
Cc: chairs@w3.org; msc@mitre.org; Taki Kamiya
Subject: Transition Announcement: Efficient XML Interchange format 1.0
Last Call

The Efficient XML Interchange Working Group announces the Last Call
publication of Efficient XML Interchange Format 1.0 on Sept 19th.
The document is available at:


The Last Call review period ends on 7th November 2008 and we look
to your feedback. Comments should be sent to public-exi-comments@w3.org
(archives are public). Please provide a separate email message for each
distinct issue to the extent possible.

Although there is no formal dependencies with other Working Groups,
we welcome all comments, in particular from the W3C TAG and XML activity

For your convenience, the abstract and status of the document sections
of this publication are repeated here:


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 data types, it reliably produces efficient encodings of XML
event streams. The event production system and format definition of EXI
are presented.

Status of this Document

This section describes the status of this document at the time of its
publication. Other documents may supersede this document. A list of
current W3C publications and the latest revision of this technical
report can be found in the W3C technical reports index at

This is the Last Call Public Working Draft of the Efficient XML
Interchange (EXI) Format 1.0. It is made available for review by W3C
members and other interested parties. It has been produced by the
Efficient XML Interchange (EXI) Working Group, which is part of the
Extensible Markup Language (XML) Activity. A summary list of changes
made to this document since the last publication is available.

The Working Group intends to advance this specification to W3C
Recommendation status. In addition, the group has produced two draft
notes, publications of which are part of the criteria for this
specification to enter Last Call status. Those notes each analyze the
impacts of the new format on existing XML technologies [1],
 and the evaluation of performance gains of the format based on
the criteria defined by the XBC Working Group [2].

The features and algorithms described in this document are considered
stable at the time of this writing. However, the mechanism described in
section 7.3.3 Partitions Optimized for Frequent use of String Literals
may be subject to change. This mechanism caps the amount of memory used
for value partitions in string tables. It should be considered a feature
at risk and may later be altered or replaced if (and only if) the
Working Group identifies another mechanism that provides even better

[1] EXI Impacts Note, http://www.w3.org/TR/exi-impacts
[2] EXI Evaluation Note, http://www.w3.org/TR/exi-evaluation

Carine Bournez, W3C
on behalf of the EXI WG Chairs.
Received on Monday, 22 September 2008 14:30:19 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 21:16:39 UTC