We show how a simple but efficient evaluation procedure that is logically correct only for closed-world knowledge bases can nonetheless be used in certain contexts with open-world ones. We discuss two cases, one based on restricting queries to be in a certain normal form, and the other, arising in reasoning about actions, based on having sensing information at the right time so as to dynamically reduce open-word reasoning to closed-word reasoning.
CITATION STYLE
Giacomo, G., & Levesque, H. (2000). Two Approaches to Efficient Open-World Reasoning. In Logic-Based Artificial Intelligence (pp. 59–78). Springer US. https://doi.org/10.1007/978-1-4615-1567-8_3
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