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Complexity of Mathematical Expressions in Adaptive Multimodal Multimedia System Ensuring Access to Mathematics for Visually Impaired Users
"... Abstract — Our 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 su ..."
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Abstract — Our 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 format are calculated. Unlike the current stateofthe art solutions, our approach takes into account the user’s situation and not imposes a solution that is not suitable to his context and capacity. In this wok, we present our methodology for calculating the mathematical expression complexity and the results of our experiment. Finally, this paper discusses the concepts and principles applied on our system as well as their validation through cases studies. This work is our original contribution to an ongoing research to make informatics more accessible to handicapped users.
Non visual access to mathematical contents: State of the art and prospective
 In Proceedings of the WEIMS Conference
, 2009
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"... www.ati.es/novatica/>, journal of the Spanish CEPIS society ATI (Asociación ..."
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www.ati.es/novatica/>, journal of the Spanish CEPIS society ATI (Asociación
Modeling and Simulation of a Pervasive Multimodal Multimedia Computing System for Visually Impaired Users
"... Using multimodality in a computing system is advantageous in the sense that it makes computing more accessible to a wide range of users including those with impairments. Our work is aimed at making informatics accessible to the visually impaired, specially the access to mathematical expressions. The ..."
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Using multimodality in a computing system is advantageous in the sense that it makes computing more accessible to a wide range of users including those with impairments. Our work is aimed at making informatics accessible to the visually impaired, specially the access to mathematical expressions. The selection of modalities, media, and presentation formats depends on the interaction context (i.e. combined contexts of the user, his environment and his computing system) and nature of the expression. The adaptation of a computing system to the needs of a mobile user is essential in order that the user could continue working on his task at anytime anywhere, thereby increasing his productivity. The system design is intended to be pervasive, faulttolerant and having a great selfadaptation capability under varying conditions (e.g. missing or defective components, change in computing resources). This paper is aimed at presenting the modeling and the simulation of our system through case studies and formal specification using Petri nets. Also we propose ontology for context modeling. A simulation of the system’s behavior, along with some test case scenarios, is also presented in this paper.