Re: [DNSOP] clue w.r.t. arabic

[Eric Brunner-Williams <[e-mail]>]

On 11/18/10 6:05 PM, Masataka Ohta wrote:

> If it's just a reference, that's fine. But, if you want to
> make some point, make it with your own words or quotation,
> not just a reference to lengthy video, please.

noted.

> Anyway, Arabic strings are examples of exponential explosions
> with large coefficients a lot easier to understand for most
> of you than Chinese ones.

the density of variant (context dependent) characters in arabic 
script, whether sampled as text, or sampled as domain names, is 
sparse, relative to the density of "variant" characters in the 
(unified) han script(s), which is not quite 2^^n, where n is the 
number of characters in a label, but is sufficiently close to allow 
the "exponential" term to be reasonably used.

i know this to be the case, but just in case the point was not 
appreciated by the icann*, and other ietf persons present** at the idn 
session during the icann brussels meeting, i carefully asked the 
density question of the presenters, one a han script (chinese) domain 
name registry operator, the other an arabic script (arabic) domain 
name registry operator. their answers were as i expected, and fail to 
support a "Arabic strings are examples of exponential explosions with 
large coefficients" claim.

variants in arabic script present problems to the idn(a) 
specification(s) that assume "unicode" as the character repertoire, 
but they are unlike in scale the problems presented sc/tc equivalence 
classes presented with similar conditions and assumptions.

-e

*  t. dam
** o. gudmundsson