WORD REPETITION IN SEPARATE CONVERSATIONS FOR DETECTING A SIGN OF COGNITIVE DECLINE

A computer-implemented method for supporting detection of a sign of cognitive decline is disclosed. In the method, two or more sets of conversation data of a target individual are obtained. The method includes combining at least two sets of the conversation data corresponding to plural different days to generate a combined set and extracting one or more linguistic features that represent vocabulary richness from at least the combined set. A feature that characterizes word repetitiveness in conversations across the plural different days of the target individual is calculated from the one or more linguistic features. The feature that characterizes the word repetitiveness is output.