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UNSUPERVISED KEYWORD SPOTTING AND WORD DISCOVERY FOR FRAUD ANALYTICS
UNSUPERVISED KEYWORD SPOTTING AND WORD DISCOVERY FOR FRAUD ANALYTICS
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机译:欺诈分析的未经监督的关键词发现和单词发现
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摘要
Embodiments described herein provide for a computer that detects one or more keywords of interest using acoustic features, to detect or query commonalities across multiple fraud calls. Embodiments described herein may implement unsupervised keyword spotting (UKWS) or unsupervised word discovery (UWD) in order to identify commonalities across a set of calls, where both UKWS and UWD employ Gaussian Mixture Models (GMM) and one or more dynamic time-warping algorithms. A user may indicate a training exemplar or occurrence of call- specific information, referred to herein as "a named entity", such as a person's name, an account number, account balance, or order number. The computer may perform a redaction process that computationally nullifies the import of the named entity in the modeling processes described herein.
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