Differences in Speaker Individualising Information between Case Particles and Fillers in Spoken Japanese

This study investigates idiosyncrasy manifested in language use in spoken Japanese. For this purpose, we use speaker classification techniques as analytical tools. More precisely, focusing on Japanese case particles and fillers, of which the linguistic functions differ significantly, we aim to investigate 1) the extent of speaker idiosyncrasy in the selection of certain case particles/fillers over others in Japanese monologues, and 2) the differences, if any, between case particles and fillers in the degree of speaker-individualising information. We discuss what contributes to the identified differences between case particles and fillers. This study will contribute to the further development of automatic speaker recognition systems and authorship analysis studies.