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Publication Details

Integration of Heterogeneous Knowledge Sources in the CALO Query Manager

by Ambite, Jose-Luis and Chaudhri, Vinay K. and Fikes, Richard and Jenkins, Jessica and Mishra, Sunil and Muslea, Maria and Uribe, Tomas and Yang, Guizhen

August 2005.

Note: Technical Report

Abstract

We report on our experience in developing a query answering system that integrates multiple knowledge sources. The system is based on a novel architecture for combining knowledge sources in which the sources can produce new subgoals as well as ground facts in the search for answers to existing subgoals. The system uses a query planner that takes into account different query processing capabilities of individual sources and augments them gracefully. A reusable ontology provides a mediated schema that serves as the basis for integration. We have evaluated the system on a suite of test queries in a realistic application to verify the practicality of our approach.

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Associated Projects

CALO

Cognitive Assistant that Learns and Organizes

As part of DARPA’s Personalized Assistant that Learns (PAL) program, SRI and team members are working on developing a next-generation "Cognitive Agent that Learns and Organizes" (CALO).

AIC Personnel

Name Title E-mail
Chaudhri, Vinay K Program Director
Mishra, Sunil Computer Scientist
Uribe, Tomas E Computer Scientist
Yang, Guizhen Alumnus

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