Ralph Leon Rose is an Associate Professor at Waseda University's Faculty of Science and Engineering, specializing in computational linguistics and second language acquisition. Holding a Ph.D. in Linguistics from Northwestern University (2005), his career spans over 30 years in language education across Japanese institutions including Gunma Prefectural Women's University and Notre Dame Seishin Women's Junior College. His research focuses on hesitation phenomena , speech fluency measurement , and computer-assisted language learning . Recent work analyzes filled pauses across languages, develops AI-powered vocabulary assessment tools (VocQGen), and investigates ethical implications of disfluencies in AI speech. His publications reveal consistent exploration of how temporal speech variables affect second language perception and production. AY2018 e-Teaching Award from Waseda University Cognitive Science Fellow at Northwestern University Rose leads multiple research projects including Automatic generation of vocabulary quiz items and Modeling speech fluency for e-learning . His lab develops practical tools like Fluidity (real-time fluency feedback), JESPR (self-paced reading tasks), and the Crosslinguistic Corpus of Hesitation Phenomena . As an active member of ISCA, IEEE, and EUROCALL, he contributes to shaping ethical standards in AI speech applications while maintaining strong industry connections through regular media appearances and conference keynotes.