Abstract
We briefly describe LORE, a logic with four values, the traditional truth values T and F, and two “Unknown” values, allowing to differentiate between knowing that nothing is known, and not knowing (with the available resources) whether it is known. A computer system based on LORE has the capability to remember all the paths followed during an attempt to answer a question. For each path, it records the used hypotheses (the hypotheses that constitute the path), the missing hypotheses (when the path did not lead to an answer), and why they were assumed missing. A number of examples of the use of LORE are discussed, and it is shown that SNePS capabilities can be expanded if LORE is accepted as the logic underlying its inferences.
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© 1990 Springer-Verlag Berlin Heidelberg
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Mamede, N.J., Martins, J.P. (1990). Expanding SNePS capabilities with LORE. In: Kumar, D. (eds) Current Trends in SNePS — Semantic Network Processing System. SNePS 1989. Lecture Notes in Computer Science, vol 437. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0022081
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DOI: https://doi.org/10.1007/BFb0022081
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