'3 cnf' presentation slideshows

The Computational Complexity of Satisfiability

The Computational Complexity of Satisfiability. Lance Fortnow NEC Laboratories America. Boolean Formula. u v w x : variables take on TRUE or FALSE NOT u u OR v u AND v. Assignment. u ? TRUE v ? FALSE w ? FALSE x ? TRUE. Satisfying Assignment.

1.15k views • 102 slides

The Computational Complexity of Satisfiability

The Computational Complexity of Satisfiability. Lance Fortnow NEC Laboratories America. Boolean Formula. u v w x : variables take on TRUE or FALSE NOT u u OR v u AND v. Assignment. u ? TRUE v ? FALSE w ? FALSE x ? TRUE. Satisfying Assignment.

1.03k views • 102 slides

Computability & Complexity II

585 views • 58 slides

Umans Complexity Theory Lectures

492 views • 49 slides

CS151 Complexity Theory

447 views • 43 slides

CS151 Complexity Theory

CS151 Complexity Theory. Lecture 12 May 6, 2004. Outline. The Polynomial-Time Hierarachy ( PH ) Complete problems for classes in PH , PSPACE BPP and the PH non-uniformity and the PH. The Polynomial-Time Hierarchy. ? 0 = ? 0 = P ? 1 =P P ? 1 = NP ? 1 = coNP

520 views • 36 slides

CS151 Complexity Theory

CS151 Complexity Theory. Lecture 12 May 6, 2004. Outline. The Polynomial-Time Hierarachy ( PH ) Complete problems for classes in PH , PSPACE BPP and the PH non-uniformity and the PH. The Polynomial-Time Hierarchy. ? 0 = ? 0 = P ? 1 =P P ? 1 = NP ? 1 = coNP

438 views • 36 slides

UMass Lowell Computer Science 91.503 Analysis of Algorithms Prof. Karen Daniels Fall, 2008

UMass Lowell Computer Science 91.503 Analysis of Algorithms Prof. Karen Daniels Fall, 2008. Lecture 7 Tuesday, 10/28/08 Approximation Algorithms. Approximation Algorithms. Chapter 35. Motivation: Some Techniques for Treating NP-Complete Problems. Approximation Algorithms

494 views • 34 slides

Satisfiability

Satisfiability. Introduction to Artificial Intelligence COS302 Michael L. Littman Fall 2001. Administration. Questions?. Types of Logics. Logic historically a hot topic in AI. Propositional logic: Boolean variables (simple) First-order logic: more advanced types, objects (expressive)

341 views • 33 slides

CSCI 2670 Introduction to Theory of Computing

CSCI 2670 Introduction to Theory of Computing. December 2, 2004. Agenda. Yesterday The Class NP Today NP-completeness. Announcement. If you want me to have a review session for the final exam, please email me your exam schedule. NP-completeness.

392 views • 29 slides

Paul Beame University of Washington

Phase Transitions in Proof Complexity and Satisfiability Search. Paul Beame University of Washington. Dimitris Achlioptas Michael Molloy Microsoft Research U. Toronto. with. Satisfiability. F ( x 1 ? x 2 ? x 4 ) ( x 1 ? x 3 ) ( x 3 ? x 2 ) ( x 4 ? x 3 )

242 views • 24 slides

CS21 Decidability and Tractability

CS21 Decidability and Tractability. Lecture 24 March 5, 2014. Outline. the class PSPACE a PSPACE-complete problem PSPACE and 2-player games. Space complexity. Definition : the space complexity of a TM M is a function f: N ? N

346 views • 21 slides

CSCI 2670 Introduction to Theory of Computing

CSCI 2670 Introduction to Theory of Computing. December 7, 2005. Agenda. Today Discussion of Cook-Levin Theorem One more NP-completeness proof Course evaluations Tomorrow Return tests Provide pre-final grades Final review. NP-completeness.

293 views • 21 slides

CS21 Decidability and Tractability

CS21 Decidability and Tractability. Lecture 24 March 8 , 2019. Outline. The complexity class PSPACE a PSPACE-complete problem PSPACE and 2-player games. Space complexity. Definition : the space complexity of a TM M is a function f: N ? N

213 views • 21 slides

Umans Complexity Theory Lectures

Umans Complexity Theory Lectures. Lecture 2a: Reductions & Completeness. Complexity Classes. Back to complexity classes: TIME(T(n)) = languages decidable by a multi-tape TM in at most T(n) steps, where n is the input length, and T : N ? N

152 views • 15 slides

CS 332: Algorithms

CS 332: Algorithms. NP Completeness Continued: Reductions Circuit SAT ? SAT ? 3-CNF-SAT. Review: P and NP. What do we mean when we say a problem is in P ? What do we mean when we say a problem is in NP ? What is the relation between P and NP ?. Review: P and NP.

204 views • 13 slides