Please use this identifier to cite or link to this item: https://doi.org/10.1109/ICASSP.2010.5495609
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dc.titleA minimum variance asynchronous detection error trade-off performance analysis for multi-class detection problems
dc.contributor.authorSim, K.C.
dc.date.accessioned2013-07-04T08:43:56Z
dc.date.available2013-07-04T08:43:56Z
dc.date.issued2010
dc.identifier.citationSim, K.C. (2010). A minimum variance asynchronous detection error trade-off performance analysis for multi-class detection problems. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings : 4458-4461. ScholarBank@NUS Repository. https://doi.org/10.1109/ICASSP.2010.5495609
dc.identifier.isbn9781424442966
dc.identifier.issn15206149
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/42124
dc.description.abstractIn a detection problem, the trade-off between the miss and false alarm probabilities are often shown as a Detection Error Trade-off (DET) curve. The DET curve is obtained by adjusting a decision threshold to vary the compromise between these probabilities. For a multi-class detection problem, each class has its own decision threshold, which leads to a multi-variate detection error trade-off. In order to plot a DET curve, the decision thresholds are constrained to a single degree of freedom. Typically, they are synchronously constrained to use the same values. In this paper, a minimum variance DET analysis is proposed where the decision thresholds are asynchronously constrained such that the variances of the miss and false alarm probabilities are minimised. If the scores are normally distributed, the decision thresholds can be approximated as a linear univariate function and the resulting DET curve is also a straight line. In more general cases where the scores are not normally distributed, piecewise linear functions can be estimated iteratively, instead. The minimum variance asynchronous DET analysis is applied to a phone verification task on TIMIT database. ©2010 IEEE.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1109/ICASSP.2010.5495609
dc.sourceScopus
dc.subjectDetection error trade-off
dc.subjectMulti-class detection
dc.subjectPhone verification
dc.typeConference Paper
dc.contributor.departmentCOMPUTER SCIENCE
dc.description.doi10.1109/ICASSP.2010.5495609
dc.description.sourcetitleICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
dc.description.page4458-4461
dc.description.codenIPROD
dc.identifier.isiut000287096004096
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