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Expert systems reach high levels of performance when they operate in specific and narrow domains. Due to the fact that most of the engineering problems are well defined and specific, expert systems are widely used in engineering applications. Therefore, a survey of existing expert system tools and engineering based expert systems is appropriate. Development tools represent the essential “building blocks” upon which knowledge engineering and, thus, the expert system is built. Both, the development tools and expert systems, are software based products which solve specific problems using a knowledge based approach, the knowledge being represented in an explicit way [17]. Some of the most well known Expert System Development Tools (ESDT) are summarized to understand and conceptualize better pertinent implementation issues related to actual expert systems. Many Engineering Based Expert Systems (EBES) are also presented. However, the reviewed list should not (by any means) be conceived as an exhaustive catalogue of all existing expert systems for engineering applications; it should be rather viewed as an attempt to give a flavor of the capabilities and the wide area of applicability of Engineering Based Expert Systems. |
