The Chinese University of Hong Kong

Tsz Kan Christopher Chu

Wing Yip Lam

Kam Fai Tsoi

Ka Ho Tsang

Methods for screening, diagnosing, or predicting presence, progression, or treatment effects of a cognitive dysfunction such as dementia based on an analysis of drawing behavior changes by a pre-trained Na&#xef;ve Bayes method are provided. The methods include steps of obtaining drawing data of at least one image created by a test subject on a digital device and obtaining personal data of the test subject; reconstructing the at least one image based on the drawing data obtained; converting the drawing data to drawing features comprising a plurality of motion features and a plurality of geometric features; and determining probability that the test subject has a cognitive dysfunction based on the drawing features and the personal data by a pre-trained Na&#xef;ve Bayes method with a greedy variable selection.

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Hong Kong, China

Tsz Kan Christopher Chu