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This paper presents PARADISE (PARAdigm for DIalogue System Evaluation), a general framework for evaluating spoken dialogue agents. The framework decouples task requirements from an agent's dialogue behaviors, supports comparisons among dialogue strategies, enables the calculation of performance over subdialogues and whole dialogues, specifies the relative(More)
This paper presents PARADISE (PARAdigm for DIalogue System Evaluation), a general framework for evaluating and comparing the performance of spoken dialogue agents. The framework decou-ples task requirements from an agent's dialogue behaviors, supports comparisons among dialogue strategies, enables the calculation of performance over subdialogues and whole(More)
This paper describes VPQ (Voice Post Query), a dialog system that provides spoken access to the information in the AT&T corporate personnel database (>120,000 entries). An explicit design goal is to have the user's initial interaction with the system be rather unconstrained and to rely on tighter, prompt constrained, dialog only when absolutely necessary.(More)
Spoken dialog systems interpret a user's request and engage in conversation if the need arises. It is the responsibility of the dialog manager to determine if this need is present and how to proceed. Our spoken dialog system is constructed to suuciently understand a user's response to the open-ended prompt 'How may I help you?' in order to route a caller to(More)
We describe a procedure for contextual interpretation of spoken sentences within dialogs. Task structure is represented in a graphical form, enabling the interpreter algorithm to be efficient and task-independent. Recognized spoken input may consist either of a single sentence with utterance-verification scores, or of a word lattice with arc weights. A(More)