I-D Action:draft-ietf-idnabis-mappings-00.txt

[Mark Davis ⌛]

Well, I agree that "loss of information" can sound drastic, but I was just
repeating John's words.

Perhaps less scary is just to say that case mapping (whether upper, lower,
or folding) is not a reversible transformation: "McDonald", once transformed
to "MCDONALD" or "mcdonald" cannot be restored without additional
information. In that respect, it is similar to width transformations or
others under discussion here, except that as I pointed out, it typically
loses *more* semantic information than the others do.

Mark


On Tue, Jun 30, 2009 at 18:36, Elisabeth Blanconil <eblanconil at gmail.com>wrote:

> 2009/6/30 "Martin J. Dürst" <duerst at it.aoyama.ac.jp>
>
>>  A case mapping is also a 'loss of information', but one that people
>> clearly want.
>>
>
> Could we not phrase this differently ? Case mapping may be considered only
> if it does not represent a loss of information. Otherwise should we not name
> it "case and entropy mapping" to explain users where entropy occurs.
>
> Elisabeth Blanconil
>
>
>
>
>
>
>
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