Efficient Integration of PROLOG and Relational Databases in the NED Intelligent Information System

摘要

NED-2 is an intelligent information system for ecosystem management currently in development by the USDA Forest Service. Using PROLOG knowledge bases and inference engines, NED-2 evaluates forest inventories according to a set of predefined goals. It is a blackboard system with agents implemented in PROLOG. NED-2's primary data store is a set of relational databases. The present paper focuses upon an issue of central importance to the project―the integration of PROLOG programs and relational databases to form NED-2's blackboard.