Compute-Intensive Methods in AI: New Opportunities for Reasoning and Search Bart Selman Cornell University selman@cs.cornell.edu

7/23/98


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Table of Contents

Compute-Intensive Methods in AI: New Opportunities for Reasoning and Search Bart Selman Cornell University selman@cs.cornell.edu

Introduction

Factors in Progress

Applications: Methodology

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Outline

I. Example Application: Planning

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Some Applications of Planning

State-space Planning

Abdundance of Negative Complexity Results

Practice

Progression

Approach

SATPLAN

SAT Encodings

Solution to a Planning Problem

Satisfiability Testing Procedures

Walksat Procedure

Planning Benchmark Test Set

Solution of Logistics Problems

What SATPLAN Shows

II. Current Themes in Sat Solvers

SAT Solvers

Background

Preview of Strategy

Cost Distributions

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Heavy-Tailed Distributions

Decay of Distributions

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How to Check for “Heavy Tails”?

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Heavy Tails

Randomized Restarts

Rapid Restart on LOG.D

SATPLAN Results

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Heavy-Tailed Distributions in Other Domains

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SAT Solvers: Themes, cont.

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SAT Solvers: Recent Theory

IV. Current Themes in Encodings

Add Declarative Domain Knowledge

Kinds of Knowledge

Expressing Knowledge

Logical Status of Heuristics

Axiomatic Form

Questions

Experiment: Logistics

ntab solution of logistics

Answers

How to Generate Control Knowledge --- Automatically

Encodings: Themes cont.

Conclusions

Conclusions, cont.

Author: Bart Selman

Email: selman@cs.cornell.edu

Home Page: www.cs.cornell.edu/home/selman

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