'Resolution rule' diaporamas de présentation

Intro to AI Resolution & Prolog

Intro to AI Resolution & Prolog. Ruth Bergman Fall 2004. West Wessex Marathon Race. (by Martin Hollis)

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Agent that reason logically

Agent that reason logically. ????. Knowledge Base. A set of representations of facts about the world Knowledge representation language tell : what has been told to the knowledge base previously ask : a question and the answer Inference : what follows from what the KB has been Telled

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Chapter 6 Logical Agents

Chapter 6 Logical Agents. In previous chapters agents solve problem by searching no knowledge (past experience) is used Humans solve problem by reusing knowledge and new facts concluded under reasoning of knowledge even under partially observable environment

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Intelligent Systems

Intelligent Systems. Model Checking and Theorem Proving slides by Gulay Unel. Overview. Model Checking Theorem Proving. Model Checking - Overview. Introduction Models LTL CTL Other logics Model Checking. Introduction.

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Intelligent Systems

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Inference and Resolution for Problem Solving

Inference and Resolution for Problem Solving. Contents. What is Logic? Normal Forms Converting to CNF Clauses The Resolution Rule Proof by Refutation Resolution Refutation. Predicate Calculus Unification Skolemization Normal Forms in Predicate Calculus The Resolution Algorithm

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Propositional and First-Order Logic

Propositional and First-Order Logic. Chapter 7.4 ? 7.8, 8.1 ?8.3, 8.5. Some material adopted from notes by Andreas Geyer-Schulz and Chuck Dyer. Logic roadmap overview. Propositional logic (review) Problems with propositional logic First-order logic (review)

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Propositional Logic

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Standard Logical Equivalences

Standard Logical Equivalences. Resolution Procedure (aka Resolution Refutation Procedure). Resolution procedure is a complete inference procedure for FOL Resolution procedure uses a single rule of inference: the Resolution Rule (RR), which is a generalization of the same rule used in PL

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9 ? ??

9 ? ??. ???? Agent that reason logically. Knowledge Base. A set of representations of facts about the world Knowledge representation language tell : what has been told to the knowledge base previously ask : a question and the answer

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Converting formulas into a normal form

Converting formulas into a normal form. Consider the following FOL formula stating that a brick is an object which is on another object which is not a pyramid, and there is nothing that a brick is on, and at the same time that object is on the brick, and there is nothing that is not

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Rules of Inference

Rules of Inference. Rosen 1.5. Proofs in mathematics are valid arguments. An argument is a sequence of statements that end in a conclusion. By valid we mean the conclusion must follow from the truth of the preceding statements or premises.

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Propositional and First Order Reasoning

Propositional and First Order Reasoning. Terminology. Propositional variable: boolean variable (p) Literal: propositional variable or its negation p ?p Clause: disjunction of literals q / ? p / ? r given by set of literalsL {q, ? p, ? r}

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