Feedback-based Evaluation Tool for Web Accessibility
By Asai, Daisuke; Watanabe, Masahiro; Asano, Yoko; ASSETS 2007 - The Ninth International ACM SIGACCESS Conference on Computers and Accessibility, pp. 223-224Publication Date: October 15-17, 2007
Paper presenting a feedback-based evaluation tool for Web accessibility. The tool collects users’ assessments of the evaluation results as feedback, and its evaluation-rules, which are applied by computers automatically, are improved based on the assessments. Utilizing this framework, the evaluation tool becomes more precise and extracts more accessibility problems than existing tools. The tool was implemented as a Web service: If a user enters the URL of the target Web contents, the tool evaluates the contents based on 79 evaluation-rules created from the Web Content Accessibility Guidelines (WCAG) 1.0, and a list of all failures with regard to accessibility is displayed. Upon selecting a failure, a detailed failure page is displayed, including (1) the Highlighted Source part: the source of the content in which the failure part is highlighted for confirmation; and (2) the Assessment part: selections describing the failure alert, where users can input their assessment and comment. The evaluation tool was subjected to a field test including 1793 users, 77 percent of whom had experience in creating Web content. Ninety-five assessments were confirmed, and evaluation-rules were improved accordingly.
Published by: Association for Computing Machinery (Website:http://www.acm.org)
SIGACCESS (ACM Special Interest Group on Accessible Computing) (Web Site: http://www.sigaccess.org )
