Why Adding More Constraints Makes a Problem Easier for Hill-climbing Algorithms: Analyzing Landscapes of CSPs

98/02/04


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Why Adding More Constraints Makes a Problem Easier for Hill-climbing Algorithms: Analyzing Landscapes of CSPs

Summary

Background: Constraint Satisfaction Problem

Background: Complete Search Algorithm (Backtracking)

Background: Incomplete Search Algorithm (GSAT)

Background: Phase Transition

Performance of Incomplete Search Algorithm

Evaluation

Analyzing Landscapes of CSP

Algorithm

Solution Reachability

Ratio of Solution Reachable States

No. of Local Minima

Basin

No./Width of Basins

Conclusions

Future Works

Solvable/unsolvable Instances