Detail publikace

Discriminative Training of VBx Diarization

KLEMENT, D. DIEZ SÁNCHEZ, M. LANDINI, F. BURGET, L. SILNOVA, A. DELCROIX, M. TAWARA, N.

Originální název

Discriminative Training of VBx Diarization

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Bayesian HMM clustering of x-vector sequences (VBx) has be- come a widely adopted diarization baseline model in publications and challenges. It uses an HMM to model speaker turns, a gen- eratively trained probabilistic linear discriminant analysis (PLDA) for speaker distribution modeling, and Bayesian inference to esti- mate the assignment of x-vectors to speakers. This paper presents a new framework for updating the VBx parameters using discrim- inative training, which directly optimizes a predefined loss. We also propose a new loss that better correlates with the diarization error rate compared to binary cross-entropy - the default choice for diarization end-to-end systems. Proof-of-concept results across three datasets (AMI, CALLHOME, and DIHARD II) demonstrate the method's capability of automatically finding hyperparameters, achieving comparable performance to those found by extensive grid search, which typically requires additional hyperparameter behavior knowledge. Moreover, we show that discriminative fine-tuning of PLDA can further improve the model's performance. We release the source code with this publication.

Klíčová slova

speaker diarization, VBx, clustering, variational Bayes, discriminative training

Autoři

KLEMENT, D.; DIEZ SÁNCHEZ, M.; LANDINI, F.; BURGET, L.; SILNOVA, A.; DELCROIX, M.; TAWARA, N.

Vydáno

14. 4. 2024

Nakladatel

IEEE Signal Processing Society

Místo

Seoul

ISBN

979-8-3503-4485-1

Kniha

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

Strany od

11871

Strany do

11875

Strany počet

5

URL

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10446119

BibTex

@inproceedings{BUT189781,
  author="KLEMENT, D. and DIEZ SÁNCHEZ, M. and LANDINI, F. and BURGET, L. and SILNOVA, A. and DELCROIX, M. and TAWARA, N.",
  title="Discriminative Training of VBx Diarization",
  booktitle="ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings",
  year="2024",
  pages="11871--11875",
  publisher="IEEE Signal Processing Society",
  address="Seoul",
  doi="10.1109/ICASSP48485.2024.10446119",
  isbn="979-8-3503-4485-1",
  url="https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10446119"
}