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The Rete algorithm is an example of an algorithm that matches production rules. The Rete algorithm uses a knowledge base to check production rules and provide outcomes accordingly. It uses a complex node system to return results. Tools such as joins determine the algorithm’s behavior in terms of analysis.
Rete is useful in evaluating business case scenarios and other complex scenarios. By isolating variables and performing rule-based evaluations, a Rete method can show human decision makers a lot about what is involved in a particular scenario.
In a practical sense, developers and others can use existing tools to implement a Rete algorithm. For example, there is Drools, an object-oriented tool for Java, as well as items like Wongi-Engine for Ruby, and Mirmir.