What resolution does Prolog use?

Prolog execution is based on the Resolution proof method. Resolution is a technique of producing a new clause by resolving two clauses that contain a complimentary literal and Resolution produces proof by Refutation.

What is SLD resolution explain with suitable example?

SLD resolution (Selective Linear Definite clause resolution) is the basic inference rule used in logic programming. It is a refinement of resolution, which is both sound and refutation complete for Horn clauses.

What is resolution in logic programming?

In mathematical logic and automated theorem proving, resolution is a rule of inference leading to a refutation complete theorem-proving technique for sentences in propositional logic and first-order logic. The clause produced by a resolution rule is sometimes called a resolvent.

How is the resolution principle related to logic programming?

The resolution principle applies to first-order logic formulas in Skolemized form. These formulas are basically sets of clauses each of which is a disjunction of literals. Unification is a key technique in proofs by resolution.

Which is more general Prolog or SLD resolution?

However, the selection function in SLD resolution is more general than in SL resolution and in Prolog. There is no restriction on the literal that can be selected. In clausal logic, an SLD refutation demonstrates that the input set of clauses is unsatisfiable.

How does SLD resolution deal with negation as failure?

SLDNF is an extension of SLD resolution to deal with negation as failure. In SLDNF, goal clauses can contain negation as failure literals, say of the form {\\displaystyle not (p)\\,} , which can be selected only if they contain no variables.

Which is part of Prolog deals with logic?

The \\frst part deals with the logical aspects of logic programming and tries to provide a logical understanding of the programming language Prolog. Logic programs consist of logical formulas and computation is the process of deduction or proof construction.

Which is the main computation procedure used in Prolog?

SLD-resolution is also interesting because it is the main computation procedure used in PROLOG. PROLOG is a programming language based on logic, in which a computation is in fact a refutation.