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Prolog is a logic programming language that has its origins in artificial intelligence, automated theorem proving and computational linguistics. [1] [2] [3]Prolog has its roots in first-order logic, a formal logic, and unlike many other programming languages, Prolog is intended primarily as a declarative programming language: the program is a set of facts and rules, which define relations.
The FGCS project aimed to use logic programming to develop advanced Artificial Intelligence applications on massively parallel computers. Although the project initially explored the use of Prolog, it later adopted the use of concurrent logic programming , because it was closer to the FGCS computer architecture.
Prolog implementations usually omit the occurs check for reasons of efficiency, which can lead to circular data structures and looping. By not performing the occurs check, the worst case complexity of unifying a term with term is reduced in many cases from (() + ()) to (((), ())); in the particular, frequent case of variable-term unifications, runtime shrinks to ().
The AST is represented using Prolog terms and can be used to apply optimizations, to compile such expressions to machine-code, or to directly interpret such statements. As is typical for the relational nature of predicates, these definitions can be used both to parse and generate sentences, and also to check whether a given tree corresponds to ...
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The syntax used by Quintus Prolog was based on that of DEC-10 Prolog. [1] It was long known as the most highly performing implementation of Prolog, and was the first to implement optimisations such as instruction merging and specialisation for the Warren Abstract Machine.
λProlog, also written lambda Prolog, is a logic programming language featuring polymorphic typing, modular programming, and higher-order programming.These extensions to Prolog are derived from the higher-order hereditary Harrop formulas used to justify the foundations of λProlog.
SWI-Prolog is a free implementation of the programming language Prolog, commonly used for teaching and semantic web applications. It has a rich set of features, libraries for constraint logic programming, multithreading, unit testing, GUI, interfacing to Java, ODBC and others, literate programming, a web server, SGML, RDF, RDFS, developer tools (including an IDE with a GUI debugger and GUI ...