In this paper, we provide a systematic study of the task of sensor planning for object search. The search agent's knowledge of object location is encoded as a discrete probability density which is updated whenever a sensing action occurs. Each sensing action of the agent is defined by a viewpoint, a viewing direction, a field-of-view, and the application of… (More)
This document is intended to establish a set of usage scenarios and goals to motivate development of the Ontology Definition Metamodel (ODM). The contents of the final version of this document will be incorporated in the ODM specification to provide context for its application and use.
This paper proposes a novel tracking strategy that can robustly track a person or other object within a xed environment using a pan, tilt, and zoom camera with the help of a pre-recorded image database. We deene a set of camera states which i s s u c i e n t t o s u r v ey the environment for the target. Background images for these camera states are stored… (More)
We have built a set of integrated AI systems (called conversation machines) to enable transaction processing over the telephone for limited domains like stock trading and banking. The conversation machines integrate the state-of-the-art technologies from computer telephony, continuous speech recognition, natural language processing and human-computer… (More)
In this paper, we propose using standard XML messaging interfaces between components of natural language dialog systems. We describe a stock trading and information access system, where XML is used to encode speech acts, transactions and retrieved information in messages between system components. We use an XML/XSL based unification approach to display… (More)