Expert systems in data processing: California Travel Expense Claim System

The CALTREC project automated the process of creating State of California Travel Expense Claims. This project is a good representative of the types of projects expected to be done by the State of California. The application is heavily embedded into traditional data processing systems, which added much additional work outside the scope of what is considered to be knowledge engineering. The author describes the CALTREC application and why it was built, what it took to build the application and why traditional data processing skills were essential to the project´s success. It is noted that the present work should be of interest to those who are considering building expert systems as well as to those who are evaluating alternative software and hardware platforms for implementation and deployment of expert systems applications