RE: Feedback of EXI specification 2

Dear Tooru,
 
Thank you for your feedback on the EXI specification. This is a very good
question.
 
The advantage of the local-element-ns flag is improved compactness for
representing element QNames when Preserve.prefixes is true. Without the
local-element-ns flag, the prefix encoding for each element QName would have
to account for the possibility that the prefix is declared by an NS event
that follows the associated SE event (i.e., a prefix that has not yet been
encountered in the stream). In the common case, where there is only one
prefix declared for each namespace, the prefix encoding would increase from
zero bits per element to one bit per element. If there were two prefixes
declared for each namespace, the prefix encoding would increase from one bit
per element to two bits per element. Since there can be a lot of SE events
in a document, this can have a significant impact on compactness.
 
I hope this helps to answer your question.
 
    Thanks again,
 
    John Schneider
    AgileDelta, Inc.
    http://www.agiledelta.com 

> -----Original Message-----
> From: public-exi-comments-request@w3.org 
> [mailto:public-exi-comments-request@w3.org] On Behalf Of 
> ISHIZAKI Tooru
> Sent: Thursday, November 06, 2008 2:33 AM
> To: public-exi-comments@w3.org
> Cc: youenn.fablet@crf.canon.fr; fujisawa.jun@canon.co.jp
> Subject: Feedback of EXI specification 2
> 
> 
> Dear EXI members,
> 
> I have a feedback of EXI specification.
> In chapter 4, what's the advantage of local-element-ns flag?
> 
> Best Regrads,
> Tooru Ishizaki.
> 
> --
> TOORU Ishizaki <ishizaki.tooru@canon.co.jp>
> 
> 
>

Received on Wednesday, 26 November 2008 21:42:56 UTC