5th International Conference on Spoken Language Processing

Sydney, Australia
November 30 - December 4, 1998

SHEEP, GOATS, LAMBS and WOLVES: A Statistical Analysis of Speaker Performance in the NIST 1998 Speaker Recognition Evaluation

George Doddington (1), Walter Liggett (1), Alvin Martin (1), Mark Przybocki (1), Douglas A. Reynolds (2)

(1) NIST, USA
(2) MIT Lincoln Laboratory, USA

Performance variability in speech and speaker recognition systems can be attributed to many factors. One major factor, which is acknowledged but seldom analyzed, is differences in the recognizability of different speakers. In speaker recognition systems such differences are characterized by the use of animal names for different types of speakers, including sheep, goats, lambs and wolves, depending on their behavior with respect to automatic recognition systems. In this paper we propose statistical tests for the existance of these animals and hunt for such animals using results from the 1998 NIST speaker recognition evaluation.

Full Paper

Bibliographic reference.  Doddington, George / Liggett, Walter / Martin, Alvin / Przybocki, Mark / Reynolds, Douglas A. (1998): "SHEEP, GOATS, LAMBS and WOLVES: a statistical analysis of speaker performance in the NIST 1998 speaker recognition evaluation", In ICSLP-1998, paper 0608.