Home > Articles, Numerical Methods > Iterated Local Search (Stochastic Algorithm).

Iterated Local Search (Stochastic Algorithm).

February 9, 2011 Leave a comment Go to comments

Taxonomy

Iterated Local Search is a Metaheuristic and a Global Optimization technique. It is an extension of Multi Start Search and may be considered a parent of many two-phase search approaches such as the Greedy Randomized Adaptive Search Procedure and Variable Neighborhood Search.

Strategy

The objective of Iterated Local Search is to improve upon stochastic Multi-Restart Search by sampling in the broader neighborhood of candidate solutions and using a Local Search technique to refine solutions to their local optima. Iterated Local Search explores a sequence of solutions created as perturbations of the current best solution, the result of which is refined using an embedded heuristic.

Implementation

http://www.cleveralgorithms.com/nature-inspired/stochastic/iterated_local_search.rb

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