Algorithms and Problems for Quantified SAT

30/11/99


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Table of Contents

Algorithms and Problems for Quantified SAT

Algorithms and Problems for Quantified SAT

Quantified satisfiability (QSAT)

Complexity of QSAT

Algorithms for QSAT

Cadoli et al's Evaluate algorithm

An unusual preprocessing step

Function U-Evaluate(F)

Function E-Evaluate(F)

Thoughts about theAlgorithms

Failure Driven Search

No-commitment Search

Hard and Soft Clauses

Revised E-evaluate

Revised U-evaluate([F])

Comments

Conclusions (Algorithms)

Phase transition behaviour

Phase transition behaviour

Other complexity classes

QSAT phase transition

Flawed problem generation!

QSAT phase transition

QSAT phase transition

QSAT phase transition

Conclusions (Transitions)

Author:

Email: ipg@dcs.st-and.ac.uk

Home Page: http://www.dcs.st-and.ac.uk/~ipg