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- From: Joshua Allen <joshuaa@microsoft.com>
- To: 'Mike Sharp' <msharp@lante.com>, xml-dev@xml.org
- Date: Tue, 26 Sep 2000 19:03:35 -0700
The format used for binary tokenisation in WAP is WBXML:
http://www.w3.org/TR/wbxml/
Dan Suciu and Hartmut Liefke built a compressor specifically for XML that
uses information about the tags to get better compression than normal
text-oriented compression (such as gzip)
http://www.research.att.com/sw/tools/xmill/
-J
> -----Original Message-----
> From: Mike Sharp [mailto:msharp@lante.com]
> Sent: Tuesday, September 26, 2000 3:40 PM
> To: xml-dev@xml.org
> Subject: Re: Binary XML
>
>
>
>
> A WAP gateway does a binary tokenizing compression bit on the
> original WML, that
> results in astonishing compression. Don't know how that
> applies to your
> comments, but anecdotally, I've seen (and heard about) pretty
> good compression
> simply by using HTTP 1.1 and turning compression on.
> Obviously, this doesn't
> help if the XML transport isn't over HTTP (semaphore, anyone?).
>
> I'd be curious what people think about it--without, as you
> say, involving the
> wire protocol. Is it really necessary to map a specific
> token to a specific
> element (for example)? I suppose that it would allow a user
> to de-tokenize the
> document, returning it to some semblance of readability. But
> this could be done
> in a particular implementation, if needed, by referencing
> some external document
> map, couldn't it?
>
> Of course, the tokenized XML gets tricky if there are
> external schemas, DTD's or
> other XML,..how do you map the elements in the schema to the
> same elements in
> the XML, after they've been tokenized? Or did I miss the point...?
>
> Curiously,
> Mike Sharp
>
>
>
>
>
>
>
>
> "Bullard, Claude L (Len)" <clbullar@ingr.com> on 09/26/2000
> 01:01:00 PM
>
> To: xml-dev@xml.org
> cc: (bcc: Mike Sharp/Lante)
>
> Subject: Binary XML
>
>
>
> Raising an old horse, possibly dead:
>
> Has a standard XML binary token set,
> possibly based on the InfoSet to
> enable application to different
> XML vocabularies been created?
>
> Or is the thinking still that
> this side of the wireless protocols,
> zipping/unzipping is still sufficient
> given modem support?
>
> Len Bullard
> Intergraph Public Safety
> clbullar@ingr.com
> http://www.mp3.com/LenBullard
>
> Ekam sat.h, Vipraah bahudhaa vadanti.
> Daamyata. Datta. Dayadhvam.h
>
>
>
>
>
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