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Prolog

Prolog is a logic programming language that has its origins in artificial intelligence, automated theorem proving, and computational linguistics.

[EN, English, English]

History, Standards & Art

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Explore the main themes, entities and connections around Prolog. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Designed by
Alain Colmerauer
Filename extensions
.pl, .pro, .P
First appeared
1972; 54 years ago (1972)
Paradigm
Logic
Stable release
Part 1: General core-Edition 1 (June 1995; 31 years ago (1995-06)) Part 2: Modules-Edition 1 (June 2000; 26 years ago (2000-06)) Part 3: Definite clause grammar rules (June 2025…
Typing discipline
Untyped (its single data type is "term")

Topics to explore

A structured outline of related entities, concepts and subtopics. Open any item to build a new map centered on it.

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

History

Syntax and semantics

Programming in Prolog

Design patterns of Prolog

Higher-order programming

Modules

Parsing

  • Monads Monads in functional programming

Meta-interpreters and reflection

Turing completeness

Implementation

Extensions

Interfaces to other languages

Related languages

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Number of nodes, edges, triples, density and central hubs. Use it to gauge the size and connectivity of the map.

Prolog

Nodes195
Edges194
Triples330
Avg. degree1.99
Density0.010256
Components1

How this topic connects Entity context

Quick relationship hints grouped by predicate. Useful for spotting recurring semantic connections around the current entity.

See the strongest relationship patterns around the current topic before diving into the raw triples.

Prolog

Top relations

related to Interfaces to other languages · 41
Prolog → Allows, Amzi, Anderson, API, Can, Characteristics, Ciao, DCG, Delphi, Frameworks, GNU Prolog, IDE, Interface, InterProlog, ISO Prolog, It, Janus, Java, Java Prolog, JPL
related to history · 39
Prolog → According, Aix-Marseille II University, Alain Colmerauer, Americans, Artificial Intelligence Group, Colmerauer, David, DEC-10 Prolog, Edinburgh, Edinburgh Prolog, European AI, Faculty, Fernando Pereira, FGCS, Fifth Generation Computer Systems, Fortran, France, French, Gerard Battani, Henri Meloni
related to Related languages · 27
Prolog → AgentSpeak, As Turbo Prolog, Borland, Danish, Datalog, Erlang, GraphTalk, In, It, Lisp, Mercury, PDC, PDC Prolog, PicoLisp, Pilog, Planner, Prolog Development Center, Prolog's, Prolog-based, Scientific Community Metaphor
related to Execution · 14
Prolog → Again, Execution, For, If, In, Initially, Logically, Operationally, Prolog's, Since, SLD, The, This, Two
related to Modules · 14
Prolog → Ciao, Contextual Logic Programming, For, GNU Prolog, However, Instead, ISO, ISO Prolog, ISO Standard, Logtalk, Quintus/SICStus, Some, The, XSB
related to Implementation in hardware · 13
Prolog → During, Fifth Generation Computer Systems, Furthermore, GLIPS, However, In, LIP, LIPS, MLIPS, New Generation Computer Technology, The, The FGCS, The Institute
related to Use in industry · 13
Prolog → AI, Apache Hadoop, Apache UIMA, IBM's DeepQA, Java, Low-Code Development Platform GeneXus, Open, SUSE Linux Enterprise Server, TerminusDB, The, Unstructured Information Management Architecture, Watson, We
related to Web programming · 12
Prolog → Ciao, HTML, In, JSON-RPC, Resource Description Framework, Some Prolog, SWI-Prolog, There, Visual Prolog, Web Ontology Language, Websockets, XML
related to ISO Prolog · 11
Prolog → ANSI X3J17, Cor, ISO, ISO/IEC, ISO/IEC JTC1/SC22/WG17, It, Standardization, The, The International Organization, There, US Technical Advisory Group
related to Tabling · 11
Prolog → And, B-Prolog, Ciao, In, It, SLG, Some Prolog, SWI-Prolog, Tabling, XSB, YAP

Important terminology Word statistics

Frequent words and multi-word phrases across the lead, headings, infobox and body. Useful for terminology coverage.

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

programming logic language predicates query used program languages clauses system example systems term terms called also iso java implementations swi-prolog

Entity relationships Subject–Predicate–Object triples

Extracted RDF-like relationships with confidence and source. The table includes structured facts and lower-confidence contextual relations.
SubjectPredicateObjectConfidenceSrc
PrologDesigned byAlain Colmerauer1.00infobox
PrologFilename extensions.pl, .pro, .P1.00infobox
PrologFirst appeared1972; 54 years ago (1972)1.00infobox
PrologParadigmLogic1.00infobox
PrologStable releasePart 1: General core-Edition 1 (June 1995; 31 years ago (1995-06)) Part 2: Modules-Edition 1 (June 2000; 26 years ago (2000-06)) Part 3: Definite clause grammar rules (June 2025…1.00infobox
PrologTyping disciplineUntyped (its single data type is "term")1.00infobox
PrologWebsitePart 1: www.iso.org/standard/21413.html Part 2: www.iso.org/standard/20775.html Part 3: www.iso.org/standard/83635.html1.00infobox
Prologis alogic programming language that has its origins in artificial intelligence0.90text
Prologis aTuring-complete0.90text
Prologis amulti-paradigm language with interfaces0.90text
Prologis aProlog interpreter written in0.90text
Prologis asubset of Planner0.90text

Related concept clusters Concept neighborhoods

Clusters of nearby vocabulary surrounding the topic. Scan them for adjacent concepts and language you may have missed.

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridge nodes connect otherwise separate parts of the map. Expand a row to inspect the topic groups on each side.

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