Complexity of Mathematical Expressions in Adaptive Multimodal Multimedia System Ensuring Access to Mathematics for Visually Impaired Users

The adaptive multimodal system aims at correctly presenting a mathematical expression to visually impaired users. Given an interaction context (i.e. combination of user, environment and system resources) as well as the complexity of the expression itself and the user's preferences, the suitability scores of different presentation formats are calculated. Unlike the current state-of-the art solutions, the approach takes into account the user's situation and does not impose a solution that is not suitable to his context and capacity. In this paper, the authors present the methodology for calculating the mathematical expression complexity and the results of the experiment. Finally, this paper discusses the concepts and principles applied on the system as well as their validation through case studies.