Abstract
This paper presents a new design of an Augmentative and Alternative Communication (AAC) systems for conveying delicate feelings or emotions of aphasia individuals, which is based on Fuzzy-set theory. Fuzzy-set theory is crucial in addressing the ambiguity of linguistic terms used and judgments made by aphasia individuals. Due to the communication difficulties of aphasia individuals, their insights were assigned in triangular fuzzy membership functions during the design process of AAC systems. In the proposed design of AAC systems, the delicate feelings or emotions were expressed as a scale, and candidate(s) of delicate feelings or emotions were shown based on their specified position. If the candidate(s) cannot properly convey the desired delicate feelings or emotions, then the corresponding fuzzy membership function can be realized by controlling its position. The proposed method has the advantage of being able to be conveyed the exact want and needs of delicate feelings or emotions during communication. Experimental result shows that conveying delicate feelings or emotions of the aphasia individual could be improved by 50 percent using the proposed design of AAC systems.
Highlights
Aphasia is a speech and language impairment, caused by acquired brain damage [1]
This study presents the design of an Alternative Communication (AAC) system to convey delicate feelings or emotions for aphasia individuals by the support of Fuzzy-set theory
The design was started from the interaction problems between aphasia individuals and existing AAC systems
Summary
Aphasia is a speech and language impairment, caused by acquired brain damage [1]. A stroke is the most common cause of aphasia. It caused by other types of acquired brain injuries include traumatic brain injuries, brain tumors, and anoxia. The incidence of aphasia after stroke is about 20% to 38% in the acute phase [2][3]. Brain damage often causes hemiparesis, which is a weakness or inability to move on one side of the body. Right-sided hemiparesis involves injury to the left side of the brain, which controls language and speaking. People with this type of hemiparesis may have trouble speaking and/or understanding what people are saying
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