Alicia Abella

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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 Sys tem 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 per formance over subdialogues and whole(More)
E ngineers have long sought to design systems that understand and act upon spoken language. Extracting meaning from natural, unconstrained speech over the telephone is technically challenging, and quantifying semantic content is crucial for engineering and evaluating such systems. Traditional menu-driven speech recognition systems force users to learn the(More)
In this paper we describe a system that integrates image processing and natural language processing for tasks that involve communicating visual information. The system determines information about the spatial relationship of objects in images and conveys it in the form of an English sentence. We are exploring the applicability of this system to two tasks:(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)
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)