|Conversational Biometrics Group - HOPE Demo|
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Conversational Biometrics Travel System
The HOPE travel system provides a telephony speech interface to web content, including travel information (www.virtuallythere.com)* and other types of web content such as IBM blue pages. The hope system invokes a conversational biometrics session in order to verify the caller. Subsequently, upon verification of the user it accesses travel web content using the HOPE server, allowing the user to navigate through travel reservation data. The information includes flights, hotel, rental car information, and a live weather forecast for the trip destinations. The HOPE server is also used for personalization features: the user's data is retrieved from IBM Blue Pages Intranet, and used to generate a personalized greeting including the user's name and interests.
Conversational speech biometrics combines two sources for authentication:
1) physical speech biometrics (the voice-print) and: 2) user knowledge
(e.g.,passwords and personal information). The combination of the two information
sources increases the security and reliability and provides a flexible
framework for various authentication scenarios so as to maximize user convenience.
Technologies utilized to enable conversational speech biometrics include
acoustic speaker recognition, speech recognition, natural language understanding,
and dialog management. In the HOPE application, the verification consists
of one or several short interviews involving randomly asked authentication
questions and an acoustic voice-print check. The length of a session depends
on the correctness of the answers and the estimated voice-print confidence.
Users can enroll into the system via an HTML-form and a telephone server.
Measured on real data, casual impostors are falsely accepted by the system
in less than 0.00001 % of the cases, balanced by a 3% false rejection of
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