User-adaptive dialog support for speech dialog systems
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Abstract
A common problem faced by speech dialog systems is that they have to serve users with varying degrees of experience of such a system in an optimal manner. The invention relates to a speech dialog system that differentiates between inexperienced and experienced users and generates speech prompts that are adapted accordingly. The system is able to differentiate between inexperienced and experienced users, issuing a detailed speech prompt to the former and an abbreviated speech prompt to the latter. According to the invention, the speech dialog system initialises a dialog step using an abbreviated speech prompt. If the system user does not react to the abbreviated speech prompt after a specified time (recognition timeout), a detailed speech prompt is issued. Thus both types of speech prompts are issued for each dialog step and are available to the system user for selection. The user can therefore always select the type and manner of dialog he or she requires. The experienced user therefore always has the option of taking the initiative with regard to the course of the dialog. If at one point in the speech dialog he or she is unsure of the type of speech response that is expected by the speech dialog system, he or she can simply wait for the recognition timeout and then receive a detailed speech prompt.
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Citations
12 Claims
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1-6. -6. (canceled)
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7. A method for user-adaptive dialog guidance for a speech dialog system,
in which a speech prompt is output by the speech dialog system, wherein in response to this the speech dialog system waits for an utterance by the system user, for which purpose a speech recognition system is activated in order to understand the utterance by the user, wherein the system differentiates inexperienced and experienced users and outputs a detailed prompt to inexperienced users, while it uses a shortened prompt for experienced users, characterized in that a dialog step with a shortened prompt is initialized on the part of the speech dialog system, after which a detailed prompt is output if there is no utterance by the system user in response to the shortened prompt after a specific time.
Specification