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Re: function and impacts (was: @scope and @headers reform)

From: Leif Halvard Silli <lhs@malform.no>
Date: Wed, 24 Sep 2008 03:31:50 +0200
Message-ID: <48D99886.2090803@malform.no>
To: Laura Carlson <laura.lee.carlson@gmail.com>
CC: James Craig <jcraig@apple.com>, Gez Lemon <gez.lemon@gmail.com>, Al Gilman <alfred.s.gilman@ieee.org>, Chris Wilson <Chris.Wilson@microsoft.com>, W3C WAI-XTECH <wai-xtech@w3.org>, public-html@w3.org

Laura Carlson 2008-09-24 01.38:

> James wrote:
> 
>> I trust the direction concerns will be addressed if you continue to
>> raise it for the HTML WG agenda.
> 
> How would the smart headers algorithm work on:
> 
> http://juicystudio.com/wcag/tables/altcomplex.html


I have tested this table in James's Table Inspector.[1]

Results:

[Test A:] The original table: See URL above.
Number of hierarchy attributes used: 44.
In detail: headers: 18; scope: 14; id:  12; @axis: 0;
Header association: This is the facit. [2]

[Test B:] The original table, but with fewer attributes. [3]
Number of hierarchy attributes used: 21.
In detail: headers: 9; scope: 0; id: 3; axis: 9;
Header association: Same as original. [4]

[Test C:] Same table as Test B, but parsed with SMART algorithm.
Table hierarchy attributes used: see Test B.
In detail: see Test B.
Header association: Worse, quite poor. [5]

NOTES:
* The Smart algorithm is able to give the same results as the HTML 
4 algorithm when parsing the original table. However, as Test C 
shows, it fails if using @axis.
* If the Smart algorithm is any better, then it allows us to code 
less. At any rate, I guess that it might be possible to 
incorporate @axis into the Smart algorithm.
* Use of @axis not ony allows us to use fewer attributes, but in 
in addition it "sprites" up the table with cathegory informatino.

[1] http://james.html5.org/tables/table_inspector.html
[2] http://tinyurl.com/juicy-table-original
[3] http://www.malform.no/html5/juicy-fewer-attributes.html
[4] http://tinyurl.com/juicy-simplfied-algorithm-HTML
[5] http://tinyurl.com/juicy-simplified-algorit-SMART
-- 
leif halvard silli
Received on Wednesday, 24 September 2008 01:32:38 UTC

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