KnowledgeWorks and Prolog User Guide
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6 Advanced Topics
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6.2 Optimization
6.2.1
Forward Chaining
6.2.1.1 KnowledgeWorks Structures
6.2.1.2 Efficient Forward Chaining Rule Preconditions
KnowledgeWorks and Prolog User Guide (Unix version) - 22 Dec 2009