Decision trees with improved efficiency for fast speaker verification - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Conference Papers Year : 2005

Decision trees with improved efficiency for fast speaker verification

Abstract

Classification and regression trees (CART) are convenient for low complexity speaker recognition on embedded devices. However, former attempts at using trees performed quite poorly compared to state of the art results with Gaussian Mixture Models (GMM). In this article, we introduce some solutions to improve the efficiency of the tree-based approach. First, we propose to use at the tree construction level different types of information from the GMM used in state of the art techniques. Then, we model the score function within each leaf of the tree by a linear score function. Considering a baseline state of the art system with an equal error rate (EER) of 8.6% on the NIST 2003 evaluation, a previous CART method provides typical EER ranging between 16% and 18% while the proposed improvements decrease the EER to 11.5%, with a computational cost suitable for embedded devices.
Fichier principal
Vignette du fichier
2005_Interspeech_GononGribBimbot.pdf (139.6 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

inria-00564509 , version 1 (09-02-2011)

Identifiers

  • HAL Id : inria-00564509 , version 1

Cite

Gilles Gonon, Rémi Gribonval, Frédéric Bimbot. Decision trees with improved efficiency for fast speaker verification. 9th European Conference on Speech Communication and Technology, Proceedings of (INTERSPEECH-2005), Sep 2005, Lisbonne, Portugal. pp.3077--3080. ⟨inria-00564509⟩
263 View
137 Download

Share

Gmail Facebook Twitter LinkedIn More