seniorGenetic Algorithms
What is fitness landscape ruggedness?
Updated May 16, 2026
Short answer
Ruggedness measures how frequently fitness values change across the search space.
Deep explanation
A rugged fitness landscape has many peaks and valleys, meaning small changes in solution cause large changes in fitness. This increases difficulty for GA because local search becomes unreliable and exploration becomes critical.
Real-world example
Protein folding optimization with highly complex energy surfaces.
Common mistakes
- Assuming gradient-like smoothness in all optimization problems.
Follow-up questions
- How do GAs handle ruggedness?
- What is neutrality in landscapes?