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Is RETE Necessary for Business Rules - Why you should care

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Contributed by: Tom DeBevoise,  Director,  Bosch Software Innovations Corp.

Many BRMS vendors, especially the leaders Fair Isaac and ILOG, consider their implementation of the RETE algorithm a critical part of their product offering. Yet you might not understand what RETE is and why it can be either useful or unnecessary, depending on the rules problem domain. So what is RETE?

The RETE algorithm was developed to improve evaluation performance with large knowledge or fact sets. For example, a diagnostic expert system might describe many signs and symptoms for the diagnosis of a condition. Because of the diagnosis, an action may be taken.

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