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SW-L  May 2010

SW-L May 2010

Subject:

Re: Data exchange with SignPuddle Markup Language

From:

Steve Slevinski <[log in to unmask]>

Reply-To:

SignWriting List: Read and Write Sign Languages

Date:

Thu, 27 May 2010 10:10:44 -0500

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (70 lines)

MARIA AZZOPARDI wrote:
> Dear Steve, Val and all the list,
> I attended the LREC 2010 and I must say I was slightly disappointed at the
> very low use of SignWriting in Computer Sign Language linguists. There
> were some researchers that told me they considered SignWriting, but opted
> for HanNoSys. It would be ideal if SignWriting were used, I thought, but I
> probably can't understand the technicalities, as computers are not my
> area.
> Could you explain why the situation is so.
>

Hi Maria,

The 2 main reasons for the low use of SignWriting in Computer Sign
Language linguistics are conceptual and technological. Conceptually,
SignWriting requires accepting a new paradigm, while HamNoSys is much
more comfortable. Technologically, SignWriting presents unique challenges.

I'll try to explain how SignWriting is different and why there is a
technology gap. Some of the details are simplified.


Currently, in the computer world, there are 2 main types of script: one
based on letters and the other based on pictographs. Both use a
sequential list of characters, either "ABC" or "儷黑". A character is a
very technical term that has many definitions, but simply put, a
character is a number that can represents a letter or a pictograph. The
letters "ABC" are sent by computer as the numbers 65, 66, and 67. The
pictographs "儷黑" are sent as 2 numbers as well, such as 234452 and 222763.


Now the question becomes how to encode SignWriting. For the current
technologies, the easiest way forward would be to label SignWriting as
pictographic and analyze the corpus of each individual sign language. We
could define a list of 20,000 signs for ASL. Stamp it as final and then
create a font file (like Chinese) that could display those 20,000 signs.
However, this list would never change and adding new signs would be
laborious. And if this were to be done for all of the world's sign
language, we would quickly run out of numbers for characters.


When I look at SignWriting, I don't see pictographs, I see symbols on a
2 dimensional canvas. Current technology can not use characters in 2
dimensional space, only characters in a sequential list. This spatial
nature of SignWriting is where the breakdown happens.


Our current technique for SignWriting is to encode the script and not
the individual languages. Once we encode the SignWriting script, we can
write any sign language. Since, the idea of a spatial script is outside
of the current model, we are making our own model. The current
SignWriting model is a collaboration between Valerie and myself.

The ISWA 2010 defines the alphabet (graphemes) of the script. An X,Y
coordinate based writing style is used to combine the symbols to form
signs. Binary SignWriting is the character encoding model that
transforms the abstract symbols, structural markers, and numbers into a
sequential list of characters.


These developments represent the open standards of SignWriting. These
standards were recently finalized and stabilized. With a 10 year freeze
on these standards, I believe we are ready for wide spread adoption.

As we overcome the technological barriers, the conceptual barriers will
drop as well. I'm predicting an explosion of acceptance for SignWriting.
With all that we've done so far, I know we're ready.

Regards,
-Steve

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