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Re: the WAVE accessibility evaluator

From: Al Gilman <asgilman@iamdigex.net>
Date: Fri, 17 Mar 2000 14:00:54 -0500
Message-Id: <200003171856.NAA11855@smtp2.mail.iamworld.net>
To: Accessibility Listserve <w3c-wai-ig@w3.org>
At 11:34 AM 2000-03-17 -0600, Melinda Morris-Black wrote:
>I'd be interested in a comparison between WAVE and Bobby. Does anyone know
>about this topic?

Briefly, Bobby mostly makes checks that can be reduced to a pass/fail
decision by machine inspection of the markup.  

It give you a report that documents what other things you need to check
with human judgement in the loop, but it doesn't set up those manual checks
for you to the extent that WAVE does.

The WAVE was developed specifically to explore techniques whereby automatic
processing can help people perform the "non-automatable, manual" checks.

For more on this philosophy and an integrated description of different
kinds of checks please check out the document draft at



>Information Architect
>Information Networks of Kansas
>FON: (785) 296-5143
>PCS: (785) 550-7345
>FAX: (785) 296-5563
>David M Clark wrote:
>> Len,
>> This is a real step forward. Well done.
>> dc
>> -------------------------------------------------------------------
>> David M. Clark
>> Director of Accessibility
>> halftheplanet.com
>> Email: dclark@halftheplanet.com  URL: http://www.halftheplanet.com
>> Boston Office: 617/859-3069 (phone/fax)
>> -----Original Message-----
>> From: w3c-wai-ig-request@w3.org [mailto:w3c-wai-ig-request@w3.org]On Behalf
>> Of Leonard R. Kasday
>> Sent: Thursday, March 16, 2000 5:14 PM
>> To: w3c-wai-ig@w3.org
>> Cc: w3c-wai-er-ig@w3.org
>> Subject: the WAVE accessibility evaluator
>> This is to announce a beta version of a new tool to help evaluate
>> accessibility of Web sites.  It's called the WAVE (Web accessibility Visual
>> Evaluator) http://www.temple.edu/inst_disabilities/piat/wave/ .  The WAVE
>> superimposes icons and labels on a web page to show what information is
>> available via ALT text and applet alternatives, and show the reading
>> order.  This gives a person a quick way to compare the ALT text with the
>> images, and the applet alternatives with the Applets.  It also helps the
>> user see if the reading order makes sense.   In addition, missing,
>> suspicious, and blank ALT text are flagged for scrutiny.  In other words,
>> the focus is to help a person make the basic manual checks needed to
>> evaluate accessibility.
>> Is the WAVE itself accessible?  That's an interesting question.  On the one
>> hand, the WAVE's input form and annotations are accessible.  However, in
>> its present form the WAVE doesn't seem to be that useful to a person who is
>> blind.  For example,  presenting the ALT text next to an image helps a
>> sighted person check the quality of the ALT text, but it doesn't help a
>> person who doesn't see the image. I'm looking for suggestions to make the
>> WAVE more useful to people who are blind.
>> This is the first release.  Although I tried to handle the most common
>> problems, there are lots of checkpoints it doesn't cover, especially
>> checkpoints dealing with disabilities other than blindness.  Also, for
>> pages with frames, it just shows the NOFRAME output, if any (although you
>> can copy the URI's of the individual frames--e.g. using Netscape's right
>> click menu--into the WAVE and look at them one at a time.)  Work is ongoing
>> to add these features.
>> The WAVE was developed at Pennsylvania's Institute on Assistive Technology,
>> a program of the Institute on Disabilities/UAP at Temple University, and
>> incorporates techniques and suggestions from the WAI Evaluation and Repair
>> Tools Interest Group.
>> If you have brief feedback of a general nature,
>>      please post it to this list (the wai interest group list,
>> w3c-wai-ig@w3.org).

>> If you have detailed feedback,
>>      please post it to the author, Len Kasday ( kasday@acm.org ) and/or the
>> Evaluation and Repair Interest Group ( w3c-wai-er-ig@w3.org   ... note the
>> "er" in that address).
>> Please respond by April 6, although of course suggestions at any time are
>> welcome.
>> Len
>> -------
>> Leonard R. Kasday, Ph.D.
>> Institute on Disabilities/UAP, and
>> Department of Electrical Engineering
>> Temple University
>> 423 Ritter Annex, Philadelphia, PA 19122
>> kasday@acm.org
>> http://astro.temple.edu/~kasday
>> (215) 204-2247 (voice)
>> (800) 750-7428 (TTY)
Received on Friday, 17 March 2000 13:55:46 UTC

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