prostatitis
发表于 2025-3-25 04:12:55
Soundness and Completeness Results II,lete by appealing to the completeness of the ground method and the Skolen-Herbrand-Gödel theorem. The material on congruences associated with sets of Horn clauses was first developed by Gallier in , where he used it to define fast two algorithms which test the unsatisfiability of ground sets of
公司
发表于 2025-3-25 08:43:48
https://doi.org/10.1057/9780230597693 shown to be unsatisfiable, or if it can no longer be expanded, in which case the query formula is shown to be refutable. The process may also enter into a non-terminating sequence of expansion steps. The algorithm that checks for unsatisfiability is not a resolution method, and has the property tha
atopic
发表于 2025-3-25 15:15:45
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ticlopidine
发表于 2025-3-25 19:36:20
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虚弱
发表于 2025-3-25 21:35:20
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HILAR
发表于 2025-3-26 02:58:56
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Plaque
发表于 2025-3-26 04:43:14
An Equational Extension,,.) is defined by an .+1-ary predicate .(..,..., .., ..) which “collects” the value in the . + 1. argument. In order for Prolog to reason equationally, rules for rewriting one term to another must be expressed via a distinguished predicate (say .).
馆长
发表于 2025-3-26 08:59:23
The ,, Refutation Method,ith equality, in order to reduce unsatisfiability in the first-order case to unsatisfiability in the ground case. Recall that this theorem states that a set of universal prenex sentences is unsatisfiable if and only if some set of ground substitution instances of the matrices of these sentences is unsatisfiable.
混杂人
发表于 2025-3-26 12:48:42
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真实的人
发表于 2025-3-26 19:22:02
https://doi.org/10.1007/978-1-4419-7479-2efinite clauses as integrity constraints, and the class of negative clauses as the query language. This interpretation is a generalization of the standard relational model because it allows recursion among the relations, and has given rise to the idea of a deductive database .