Detecting and rating dementia of Alzheimer type through lexical analysis of spontaneous speech

Calvin Thomas, Vlado Kešelj, Nick Cercone, Kenneth Rockwood, Elissa Asp

Producción científica: Capítulo en Libro/Reporte/Acta de conferenciaCapítulo

1 Cita (Scopus)

Resumen

Current methods of assessing dementia of Alzheimer type (DAT) rely on structured interviews, which attempt to capture the complex nature of deficits suffered. One of the most significant areas affected by the disease is the capacity for functional communication as linguistic skills break down. These methods often do not capture the true nature of language deficits in spontaneous speech. This issue is addressed by exploring novel automatic and objective methods for diagnosing patients through analysis of spontaneous speech. We detail several lexical approaches to the problem of detecting and rating DAT. The approaches explored rely on character n-gram-based techniques, which are shown to perform successfully in a different, but related task of automatic authorship attribution. We also explore the correlation of usage frequency of different parts of speech and DAT. We achieve a high 95% accuracy of detecting dementia when compared with a control group, we achieve 70% accuracy in rating dementia in two classes, and 50% accuracy in rating dementia into four classes. These results show that purely computational solutions offer a viable alternative to standard approaches to diagnosing the level of impairment in patients, and they present a significant step forward toward automatic and objective means to identifying early symptoms of DAT in older adults.

Idioma originalEnglish
Título de la publicación alojadaComputational Approaches to Assistive Technologies for People with Disabilities
EditoresNick Cercone, Kanlaya Naruedomkul
Páginas154-171
Número de páginas18
DOI
EstadoPublished - 2013

Serie de la publicación

NombreFrontiers in Artificial Intelligence and Applications
Volumen253
ISSN (versión impresa)0922-6389

ASJC Scopus Subject Areas

  • Artificial Intelligence

Huella

Profundice en los temas de investigación de 'Detecting and rating dementia of Alzheimer type through lexical analysis of spontaneous speech'. En conjunto forman una huella única.

Citar esto