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Introduction to Prolog

. . Agenda. What is prologSay that rule consists of head and body and that may contain variablesSimple ProgramConstants and variablesAnonymous variables; and .Why querying?Queries with ;Prolog and quantified statementsUniversal quantifierExistential quantifiers. Does the sequence of instr

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Introduction to Prolog

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    1. Introduction to Prolog � Dragoljub Pokrajac 2003

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    3. Agenda What is prolog Say that rule consists of head and body and that may contain variables Simple Program Constants and variables Anonymous variables ; and . Why querying? Queries with ; Prolog and quantified statements Universal quantifier Existential quantifiers Does the sequence of instructions matter? Recursions, Barber�s paradox Discuss execution tree and its depth-first search

    4. What is Prolog? Prolog is non-procedural programming language We specify what to be done and not how Invented in 1970s We will use Prolog to specify rules for rule-based systems

    5. Prolog References Prolog textbook I. Bratko, �Prolog Programming for Artificial Intelligence�, 3rd Edition, 2000 Prolog compiler http://www.swi-prolog.org Prolog tutorial http://www.csupomona.edu/~jrfisher/www/prolog_tutorial/pt_framer.html First-Order logic site (rather involved) http://www.cs.wisc.edu/~dyer/cs540/notes/fopc.html

    6. What Prolog Program Consists Of? It consists of rules Each rule specify first-order quantified logical statement Rules can also be viewed as relations

    7. Simple Prolog Program

    8. Example-Family Matters

    9. Example: Bush Family Show that _ means independent quantifiers

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