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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 1 of 1 1 An empirical estimate of the precision of likelihood ratios from a forensic-voice-comparison system Morrison, Geoffrey; Zhang, Cuiling; Rose, Philip In: Forensic Science International (2015) Abstract: An acoustic-phonetic forensic-voice-comparison system was constructed using the time-averaged formant values of tokens of 61 male Chinese speakers' /i/, /e/, and /a/ monophthongs as input. Likelihood ratios were calculated using a multivariate kernel density formula. A separate set of likelihood ratios was calculated for each vowel phoneme, and these were then fused and calibrated using linear logistic regression. The system was tested via cross-validation. The validity and reliability of the results were assessed using the log-likelihood-ratio-cost function (Cllr, a measure of accuracy) and an empirical estimate of the credible interval for the likelihood ratios from different-speaker comparisons (a measure of precision). The credible interval was calculated on the basis of two independent pairs of samples for each different-speaker comparison pair. Keyword: acoustic phonetic forensic voice comparison system; Adul Accuracy; article; calculation; Chinese; Credible interval; forensic science; Forensic voice comparison; human; Keywords: accuracy; likehood ratio; logistic regression analysis; phoneme; Precision; priority journal; reliability; speech; statistical analysis; validity; voice URL: http://hdl.handle.net/1885/57680 https://doi.org/10.1016/j.forsciint.2010.11.001 BASE Hide details

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