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Odyssey2010

Estimating the Precision of the Likelihood-Ratio Output of a Forensic-Voice-Comparison System

Geoffrey Stewart Morrison · Tharmarajah Thiruvaran · Julien Epps

Speech & phoneticsMethods & evidence
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The short version

Accuracy and precision describe different aspects of forensic evidence. This paper presents parametric and non-parametric procedures for estimating the precision of a voice-comparison system’s likelihood-ratio output, and examines the effect of the amount of questioned-speaker data.

Notes for the reading desk

  1. Assess precision as well as accuracy when evaluating a comparison system.
  2. The quantity of available speech is part of the evaluation context.
  3. An uncertainty interval conveys information that a point estimate alone cannot.

Explore the themes

forensic voice comparisonspeaker comparisonlikelihood ratiosprecisionreliability

Citation

Morrison, G. S., Thiruvaran, T., & Epps, J. (2010). Estimating the Precision of the Likelihood-Ratio Output of a Forensic-Voice-Comparison System. Odyssey 2010: The Speaker and Language Recognition Workshop.

Summary and reading notes are editorial guides. The linked paper is the original source.