CJK Generation Panels Coordination Review

1. CJK GP Coordination Review
CDNC/CGP Shanghai Meeting
Kenny Huang, Ph.D. 黃勝雄博士
Member, CDNC / CGP
Member, Board of Directors, TWNIC
huangksh@gmail.com
2014.May

2. Unified LGR for The Root Zone
2
Integration Panel
X
Generation Panel
Z
Generation Panel
Unified LGR for the Root Zone
Merge
Y
Generation Panel

3. CJK GP Proposal@ICANN48
3
Integration Panel
C (Chinese)
Generation Panel
J (Japanese)
Generation Panel
K (Korean)
Generation Panel
CJK
Generation Panel
Highlights
Transparency : open process
Accountability : commitment & responsibility

4. ICANN/IP Proposal
4
Integration Panel
C (Chinese)
Generation Panel
J (Japanese)
Generation Panel
K (Korean)
Generation Panel
CJK
Coordination CommitteeHighlights
Flexibility
Invisible to the community
Undetermined tasks and responsibility

5. Status Quo : Ad Hoc Model
5
Integration Panel
C (Chinese)
Generation Panel
J (Japanese)
Generation Panel
K (Korean)
Generation Panel
Non-institutionalized Process

6. Variants Disposition Scenario
6
(Asmus Freytag, 2014.03.14)

7. CGP Current Tasks
• defines which labels
– are permissible for Traditional/Simplified Chinese scripts
– have variants labels
– work is almost done through reuse of CDNC tables / IANA
IDN repository
• assigns dispositions for variant labels
– dispositions:
• allocate
• block
– using new XML format for LGR
– dispositions can be done via CDNC practices
7

8. Computation for Generating Variant Labels
8
Function Combination(Str)
F <= first codepoint of Str
SStr <= Substring of Str, without the first code point
NSC <= {}
If SStr is empty then
for each V in (Variants of code point F)
NSC = NSC set-union (the string with the code point V)
End of Loop
Else
SubCom = Combination(SStr)
For each V in (Variants of code point F)
For each SC in SubCom
NSC = NSC set-union (the string with the
first code point V followed by the string SC)
End of Loop
End of Loop
Endif
Return NSC RFC3743

9. Housekeeping
Code for Converting XML Label Generation Rules
9
while (!feof($file_handle)) {
$line = fgets($file_handle);
$arr=explode(";",$line);
echo "&ltchar cp="".$arr[0].""&gt<br>";
echo "&ltvar cp="".$arr[1]."" disp="t-preferred" /&gt<br>";
if(count($arr)>2){
$var=$arr[2];
if(strstr($var,",U")) {
$var2=explode(",U",$var);
$v2size=count($var2);
echo "&ltvar cp="".$var2[0]."" disp="block" /&gt<br>";
for($i=1;$i<$v2size;$i++){
echo "&ltvar cp="U".$var2[$i]."" disp="block" /&gt<br>";
}
}else echo "&ltvar cp="".$var."" disp="block" /&gt<br>";
}
echo "&lt/char&gt<br><br>";
}
<char cp="U+3473(0)">
<var cp="U+3473(0)" disp="t-preferred" />
<var cp="U+3447(1,3) " disp="block" />
</char>
<char cp="U+4337(0)">
<var cp="U+7D2C(1,3,9)" disp="t-preferred" />
<var cp="U+7D2C(1,3,9)" disp="block" />
<var cp="U+7EF8(1,3,4)" disp="block" />
<var cp="U+7DA2(1,3,4,8,9) " disp="block" />
</char>
<char cp="U+43AC(0)">
<var cp="U+43B1(1,3)" disp="t-preferred" />
<var cp="U+43B1(1,3) " disp="block" />
</char>
IANA IDN Repository t-preferred variant labels with
block disposition

10. Overlap Chinese, Japanese, Korean
• Integrated Root Zone LGR
– single definition of variant
– per-script disposition of variants
• Variants may be allocatable in one script, blocked in another
• LGR Mandatory
– Chinese, Japanese, Korean Generation Panels need to
coordinate on definition of variants
– CGP, JGP, KGP proposals must not conflict
• CJK overlap rules
– Is RFC3743 good enough to manage CJK overlap ?
– If not, what components are missing?
– create rules on the fly or go back to IETF
10

11. 11《中日韓共同常用八百漢字表》
Case for CJK Overlap
Language
language preferred variants; variants dispositions
SC u8001;u8002 block (rule1)
TC u8001;u8002 block (rule1)
JP u8001; none (rule2)
KR
老 U8001
Integrate ?
Integrated Root Zone Label
Generation Rules
Rejected
Generation
Panel
F
T

12. Potential Conflict Strategies
12
ID Strategy Pros Cons Rank
1 Adopt X
Abandon Rcjk
Permit X No label rule
2 Adopt X
Intersection ∩ (Rcjk)
Permit X
Permit ∩(variants/disp)
Rules changed (without
CJK conflict)
3 Adopt X
Union ∪(Rcjk)
Permit X
Permit ∪(variants/disp)
Rules changed with CJK
conflict
4 Abandon X and Rcjk No conflict Label not available
CJK overlap
C: rule Rc
J : rule Rj
K: rule Rk

13. Solve the Problem
• CJK coordination
– Inconsistent commitment
– Conflict strategies discussion
– ICANN intervention / facilitation?
• Implement CGP plan as scheduled
– Cross the bridge when coming to it ?
13

14. 14