Re: [idn] ACE37,AMCW and LDUDE

["Edmon" <edmon@neteka.com>]

Hi Soobok,

> codeblock shifting produces longer
XOR diff in some cases:
> 0x5000 and 0x5f00: xor diff value =
0xf00
> after codeblock shifting applied (
0x4e00 -> 0x0000 ),

This is incorrect. With codeblock
shifting in ACE37 0x4e00 becomes 0x1e00
(0x4e00 - 0x3000 = 0x1e00)
0x2000 and 0x2f00: diff = 0xf00
The diff is the same in this case.

> codeblock shifting withOUT frequecy
reordering
> does not  help.
> It  merely SHIFT xor diff
distribution and
> does NOT REDUCE the xor diff values.

ACE37 does not intend to reduce xor
diff values but to optimize it (or
shift it as the name suggests, so that
within the CJK ideograph library, diff
will not exceed 15bit or 3 <b32>
characters) to improve the han
ideographs capacity and keep the
algorithm as simple as DUDE.

Edmon