Publications & Talks

Journals and Conference Proceedings

N. Flemotomos*, R. Hsiao*, P. Swietojanski*, T. Hori, D. Can & X. Zhuang.
“Optimizing Contextual Speech Recognition Using Vector Quantization for Efficient Retrieval”
under review
*equal contribution

C. Berkel, D. Knox, N. Flemotomos, V.R. Martinez, D.C. Atkins, S.S. Narayanan, L. Alonso, C.G. Gallo & J.D. Smith.
“A Machine Learning Approach to Improve Implementation Monitoring of Family-Based Preventive Interventions in Primary Care”
Implementation Research and Practice, July 2023

B. van der Woerd, Z. Chen, N. Flemotomos, M. Oljaca, L.T. Sund, S. Narayanan & M.M. Johns III.
“A Machine-Learning Algorithm for the Automated Perceptual Evaluation of Dysphonia Severity”
Journal of Voice, July 2023

C.S. Soma, B.E. Wampold, N. Flemotomos, R. Peri, S. Narayanan, D.C. Atkins & Z.E. Imel.
“The Silent Treatment? Changes in Patient Emotional Expression after Silence”
Counselling and Psychotherapy Research, June 2023

Z. Chen, N. Flemotomos, Z.E. Imel, D.C. Atkins & S. Narayanan.
“Leveraging Open Data and Task Augmentation to Automated Behavioral Coding of Psychotherapy Conversations in Low-Resource Scenarios”
Findings of the Conference on Empirical Methods in Natural Language Processing (EMNLP), Abu Dhabi, United Arab Emirates, December 2022

N. Flemotomos & S. Narayanan.
“Multimodal Clustering with Role Induced Constraints for Speaker Diarization”
Annual Conference of the International Speech Communication Association (Interspeech), Incheon, South Korea, September 2022

Z. Chen, N. Flemotomos, K. Singla, T.A. Creed, D.C. Atkins & S. Narayanan.
“An Automated Quality Evaluation Framework of Psychotherapy Conversations with Local Quality Estimates”
Computer Speech & Language, September 2022

N. Flemotomos, V.R. Martinez, Z. Chen, K. Singla, V. Ardulov, R. Peri, D. Caperton, J. Gibson, M.J. Tanana, P. Georgiou, J. Van Epps, S.P. Lord, T. Hirsch, Z.E. Imel, D.C. Atkins & S. Narayanan.
“Automated Evaluation of Psychotherapy Skills Using Speech and Language Technologies”
Behavior Research Methods, April 2022

Z. Chen, N. Flemotomos, V. Ardulov, T.A. Creed, Z.E. Imel, D.C. Atkins & S. Narayanan.
“Feature Fusion Strategies for End-to-End Evaluation of Cognitive Behavior Therapy Sessions”
International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Online, November 2021

N. Flemotomos, V.R. Martinez, Z. Chen, T.A. Creed, D.C. Atkins & S. Narayanan.
“Automated Quality Assessment of Cognitive Behavioral Therapy Sessions through Highly Contextualized Language Representations”
PLOS ONE, October 2021

N. Flemotomos, P. Georgiou & S. Narayanan.
“Linguistically Aided Speaker Diarization Using Speaker Role Information”
Odyssey: The Speaker and Language Recognition Workshop, Online, November 2020
Best Student Paper Nominee

S.B. Goldberg, N. Flemotomos, V.R. Martinez, M. Tanana, P. Kuo, B.T. Pace, J.L. Villatte, P. Georgiou, J. Van Epps, Z.E. Imel, S. Narayanan & D.C. Atkins.
“Machine Learning and Natural Language Processing in Psychotherapy Research: Alliance as Example Use Case”
Journal of Counseling Psychology, July 2020

N. Flemotomos & D. Dimitriadis.
“A Memory Augmented Architecture for Continuous Speaker Identification in Meetings”
International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Online, May 2020

T.J. Park, M. Kumar, N. Flemotomos, M. Pal, R. Peri, R. Lahiri, P. Georgiou & S. Narayanan.
“The Second DIHARD Challenge: System Description for USC-SAIL Team”
Annual Conference of the International Speech Communication Association (Interspeech), Graz, Austria, September 2019

V.R. Martinez, N. Flemotomos, V. Ardulov, K. Somandepalli, S.B. Goldberg, Z.E. Imel, D.C. Atkins & S. Narayanan.
“Identifying Therapist and Client Personae for Therapeutic Alliance Estimation”
Annual Conference of the International Speech Communication Association (Interspeech), Graz, Austria, September 2019

N. Flemotomos, P. Georgiou, D.C. Atkins & S. Narayanan.
“Role Specific Lattice Rescoring for Speaker Role Recognition from Speech Recognition Outputs”
International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Brighton, United Kingdom, May 2019

N. Flemotomos, Z. Chen, D.C. Atkins & S. Narayanan.
“Role Annotated Speech Recognition for Conversational Interactions”
IEEE Workshop on Spoken Language Technology (SLT), Athens, Greece, December 2018

N. Flemotomos, P. Papadopoulos, J. Gibson & S. Narayanan.
“Combined Speaker Clustering and Role Recognition in Conversational Speech”
Annual Conference of the International Speech Communication Association (Interspeech), Hyderabad, India, September 2018

N. Flemotomos, V. Martinez, J. Gibson, D.C. Atkins, T. Creed & S. Narayanan.
“Language Features for Automated Evaluation of Cognitive Behavior Psychotherapy Sessions”
Annual Conference of the International Speech Communication Association (Interspeech), Hyderabad, India, September 2018

K. Singla, Z. Chen, N. Flemotomos, J. Gibson, D. Can, D.C. Atkins & S. Narayanan.
“Using Prosodic and Lexical Information for Learning Utterance-level Behaviors in Psychotherapy”
Annual Conference of the International Speech Communication Association (Interspeech), Hyderabad, India, September 2018

N. Flemotomos, “Extracting and Using Speaker Role Information in Speech Processing Applications”
Ph.D. Dissertation, University of Southern California, August 2022
Committee: Professors Shrikanth Narayanan (Chair), Keith Jenkins, Maja Matarić
N. Flemotomos, “Robust Acoustic Features for Distant Speech Recognition”
Diploma Thesis, National Technical University of Athens, April 2016 (in Greek)
Committee: Professors Petros Maragos (Chair), Alexandros Potamianos, Gerasimos Potamianos

N. Flemotomos.
“Automatic Speech Recognition: HMM/GMM Paradigm and WFST Framework”
March 2019

Automated Quality Assessment of Cognitive Behavioral Therapy Sessions through Highly Contextualized Language Representations
Data Science for Mental Health Interest Group, The Alan Turing Institute
March 2022
Towards Automated Large-Scale Evaluation of Psychotherapy
Forensic Grand Rounds, Alberta Hospital Edmonton / University of Alberta
September 2021
Who Spoke When? and how speaker roles can help us find the answer
Interaction Lab, University of Southern California
April 2021