Policy analysis framework for conversational biometrics
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United States of America Patent
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Apr 22, 2008
Grant Date -
Feb 16, 2006
app pub date -
Aug 13, 2004
filing date -
Aug 13, 2004
priority date (Note) -
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Abstract
The present invention describes a framework for the analytical and visual analysis and tuning of complex speaker verification systems guided by a policy finite state machine. The Receiver Operating Curve associated with the acoustic speaker recognition task is transformed into a multi-dimensional Receiver Operating Map (ROM), which results from a probabilistic analysis of the policy state machine. A Detection Cost Function (DCF) Map can be similarly generated. Results indicating that optimization over this surface (or the ROM) is an appropriate way to set thresholds are given.
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