'Chronological backtracking' diaporamas de présentation

A talk with 3 titles By Patrick Prosser

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Constraints and Search

Logic & AR Summer School, 2002. Constraints and Search. Toby Walsh Cork Constraint Computation Centre (4C) tw@4c.ucc.ie. Constraint satisfaction. Constraint satisfaction problem (CSP) is a triple <V,D,C> where: V is set of variables Each X in V has set of values, D_X

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Chapter 12 Constraint-Satisfaction Problems (CSP)

Chapter 12 Constraint-Satisfaction Problems (CSP). Examples of CSP problems. N-Queens Problem : Given an N x N chessboard, the task is to place N queens on the board so that no two queens are on the same row, column, or diagonal. Graph Coloring :

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GRASP: A Search Algorithm for Propositional Satisfiability

GRASP: A Search Algorithm for Propositional Satisfiability. Sat in a Nutshell. Given a Boolean formula, find a variable assignment such that the formula evaluates to 1, or prove that no such assignment exists. For n variable,s there are 2 n possible truth assignments to be checked.

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Acknowledgements

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Truth Maintenance Systems

Truth Maintenance Systems. Outline. What is a TMS? Basic TMS model Justification-based TMS. TMS. What is a TMS?. A useful problem-solver module. Justifications, assumptions. Inference Engine. Beliefs, contradictions. How using a TMS helps. Identify responsibility for decisions

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CMSC 471 Fall 2011 Class #4 Tue 9/13/11 Uninformed Search

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Backward Checking Search BT, BM, BJ, CBJ

Backward Checking Search BT, BM, BJ, CBJ. An example problem. 1. 2. 3. 4. 5. Colour each of the 5 nodes, such that if they are adjacent, they take different colours. Representation. 1. 2. 3. 4. 5. variables v1, v2, v3, v4, and v5 domains d1, d2, d3, d4, and d5

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Automated Theorem Proving

Automated Theorem Proving. Lecture 2 Propositional Satisfiability . Decision procedures. Boolean programs Propositional satisfiability Arithmetic programs Propositional satisfiability modulo theory of linear arithmetic Memory programs

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