Lists Home |
Date Index |
- From: "Anders W. Tell" <firstname.lastname@example.org>
- To: "Stephen D. Williams" <email@example.com>
- Date: Sat, 27 Mar 1999 13:41:07 +0100
"Stephen D. Williams" wrote:
> I agree. I feel they can be solved with a similar solution in at least some circumstances.
> Rather there are some straightforward ways to acheive compression that actually make
> efficiency worse while some solutions for efficiency also make compression easier.
> In fact there are a number of levels you could go with compression:
> optional gzip/bzip2 possibly preceded by:
For small to medium size streams will the gzip/bzip2 step probably take longer time
to complete than the savings in communications time. Of cource this also depends on
the network speed.
> Dictionary compression (various forms of building a list of commonly used terms or all terms
> in the current document/stream or some combination)
This is probably the best first action to take when needing to compress a ML stream.
Its also possible to combine Dictionaries with "Sessions". ie: two communication
nodes could establish a Session which contains pre negotiated Dictionaries, which
means that Dictionary content have to be sent over the wire only once. All "Packets"
thereafter references the dictionaries.
This is what I do in FML , however I have no estimates of how much space is actualy saved.
/ Financial Toolsmiths AB /
/ Anders W. Tell /
xml-dev: A list for W3C XML Developers. To post, mailto:firstname.lastname@example.org
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1
To (un)subscribe, mailto:email@example.com the following message;
To subscribe to the digests, mailto:firstname.lastname@example.org the following message;
List coordinator, Henry Rzepa (mailto:email@example.com)