Browsing by Author "Finin, Timothy W."
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item The Integrality of Speech in Multimodal Interfaces(ACM, 1998-11-30) Grasso, Michael A.; Ebert, David S.; Finin, Timothy W.A framework of complementary behavior has been proposed which maintains that direct manipulation and speech interfaces have reciprocal strengths and weaknesses. This suggests that user interface performance and acceptance may increase by adopting a multimodal approach that combines speech and direct manipulation. This effort examined the hypothesis that the speed, accuracy, and acceptance of multimodal speech and direct manipulation interfaces will increase when the modalities match the perceptual structure of the input attributes. A software prototype that supported a typical biomedical data collection task was developed to test this hypothesis. A group of 20 clinical and veterinary pathologists evaluated the prototype in an experimental setting using repeated measures. The results of this experiment supported the hypothesis that the perceptual structure of an input task is an important consideration when designing a multimodal computer interface. Task completion time, the number of speech errors, and user acceptance improved when interface best matched the perceptual structure of the input attributes.Item Personal Security Agent: KQML-based PKI(ACM, 1998-05-09) He, Qi; Sycara, Katia P.; Finin, Timothy W.Certificate management infrastructure, a.k.a. PKI (Public Key Infrastructure), which issues and provides access to public key certificates to preserve the integrity of a public key, is fundamental for electronic commerce and business across the Internet. To satisfy the requirements of various applications, PKI should demonstrate customization to user needs, interoperability and flexibility in its implementations so it can satisfy the needs of various applications. Particularly, due to the popularity of software agent-based applications over the Internet, security will be urgently needed by the “agent society”. We propose to implement the authority of authentication verification service systems as personal autonomous software agents, called security agents. In this paper, we present two aspects of KQML-based PKI: 1. the security agent concept and its functional modules; 2. an extension of KQML, which is needed for public key management and secure communications among security agents and application agents.