Accessibility evaluation improvement using Case Based Reasoning

Nowadays, many web content editors allow teachers to create web content as learning objects; however, most of these editors do not generate accessible web content. In many cases, the generated web content is not in accordance to the Web Content Accessibility Guidelines (WCAG). As a result, teachers and students with disabilities, e.g. people with visual impairment, people with hearing impairment, among others, could not properly use the web content in their learning or teaching processes. Moreover, some automatic tools for accessibility evaluation do not evaluate the web content using all the criteria from the guidelines; the rest are usually evaluated by humans (manual evaluation). In this paper, we introduce a tool to support accessibility evaluation in the generated web content when teachers use the TinyMCE web content editor. In this manner, we help them to identify web accessibility failures that can be improved. We also introduce a new approach for the web content accessibility manual evaluation process by applying the Case Based Reasoning technique. This work has been developed in the context of the European funded ALTER-NATIVA Project.