QUEST: Quantitation Expert System Tool

Period of Performance: 08/31/1995 - 08/31/1997


Phase 2 SBIR

Recipient Firm

Advanced System Technologies, Inc.
12200 E. Briarwood Avenue, Suite 260
Englewood, CO 80112
Principal Investigator

Research Topics


Increasing Navy use of mission-critical computer systems results in stringent requirements for real-time performance, reliability, and cost. Designers must analyze systems across many dimensions to identify critical design components and initiate design changes that meet numerous requirements simultaneously. These mission-critical distributed computer systems are too complex to engineer without automated support. Currently available standalone suppor tools do not provide sufficient assistance for managing complex design tradeoffs between performance, reliability, and cost. QUEST will provide designers with a graphical user interface (GUI) to build and access descriptions of mission-critical systems. QUEST will contain measurement generation capabilities covering three critical quantitative evaluation dimensions - performance, reliability, and cost. QUEST will contain an expert system to interpret the data produced by quantitative models and advise users on problems and recommended solutions. QUEST will be designed for extensibility. The system design capture is extended via meta-models and their corresponding GUI definitions. A generalized measurement capability of QUEST will provide for flexibility in defining new measurements and linking them with other QUEST components. A rule definition capability will allow the user to develop and reuse applicaiton-specific knowledge. The Phase II effort will implement QUEST and demonstrate its utility in a wide variety of complex computer system engineering applications.