A method for generating CSS to improve web accessibility for old users

Abstract

We propose a method to improve Web Accessibility. First, we generate a list of Cascading Style Sheet CSS for Websites depending on user's needs and meaningful contextual information. Second, we rank this list in order to best fit with the current user. In order to provide means for that, formally connected knowledge in user interaction processes are used to support a reasoning unit, which is based on Answer Set Programming (ASP). Finally, visual aspects of user interfaces such as sizes of user interface elements, colours, relative position of the elements or navigation devices are specified. In Web environments, user interface adaptation is needed to tailor user interfaces to older people's needs and impairments while preserving their independence. © 2012 Springer-Verlag.