26 Facts About Prolog

Prolog is a logic programming language associated with artificial intelligence and computational linguistics.

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 logic is expressed in terms of relations, represented as facts and rules.

Prolog was one of the first logic programming languages and remains the most popular such language today, with several free and commercial implementations available.

Prolog is well-suited for specific tasks that benefit from rule-based logical queries such as searching databases, voice control systems, and filling templates.

Execution of a Prolog program is initiated by the user's posting of a single goal, called the query.

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Logically, the Prolog engine tries to find a resolution refutation of the negated query.

Some design patterns in Prolog are skeletons, techniques, cliches, program schemata, logic description schemata, and higher order programming.

Prolog is a homoiconic language and provides many facilities for reflection.

Pure Prolog is based on a subset of first-order predicate logic, Horn clauses, which is Turing-complete.

Efficiency, Prolog code is typically compiled to abstract machine code, often influenced by the register-based Warren Abstract Machine instruction set.

Devising efficient implementation methods for Prolog code is a field of active research in the logic programming community, and various other execution methods are employed in some implementations.

Prolog was used for reading natural language inputs, in the Japanese language, via a touch pad.

Software developed in Prolog has been criticised for having a high performance penalty compared to conventional programming languages.

Prolog is not purely declarative: because of constructs like the cut operator, a procedural reading of a Prolog program is needed to understand it.

The order of clauses in a Prolog program is significant, as the execution strategy of the language depends on it.

Various implementations have been developed from Prolog to extend logic programming capabilities in numerous directions.

Visual Prolog is a multi-paradigm language with interfaces, classes, implementations and object expressions.

Prolog-MPI is an open-source SWI-Prolog extension for distributed computing over the Message Passing Interface.

Name Prolog was chosen by Philippe Roussel as an abbreviation for.

The first implementation of Prolog was an interpreter written in Fortran by Gerard Battani and Henri Meloni.

Warren implemented the first compiler for Prolog, creating the influential DEC-10 Prolog in collaboration with Fernando Pereira.

Much of the modern development of Prolog came from the impetus of the Fifth Generation Computer Systems project, which developed a variant of Prolog named Kernel Language for its first operating system.

Pure Prolog was originally restricted to the use of a resolution theorem prover with Horn clauses of the form:.

Pure Prolog was extended to include negation as failure, in which negative conditions of the form not are shown by trying and failing to solve the corresponding positive conditions Bi.

Prolog is used for pattern matching over natural language parse trees.

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We found that Prolog was the ideal choice for the language due to its simplicity and expressiveness.