"Squeaky Wheel" Optimization

We describe a general approach to optimization which we term Squeaky Wheel" Optimization SWO. In SWO, a greedy algorithm is used to construct a solution which is then analyzed to nd the trouble spots, i.e., those elements, that, if improved, are likely to improve the objective function score. The results of the analysis are used to generate new priorities that determine the order in which the greedy algorithm constructs the next solution. This Construct Analyze Prioritize cycle continues until some limit is reached, or an acceptable solution is found. SWO can be viewed as operating on two search spaces: solutions and prioritizations. Successive solutions are only indirectly related, via the re-prioritization that results from analyzing the prior solution. Similarly, successive prioritizations are generated by constructing and analyzing solutions. This coupled search" has some interesting properties, which we discuss. We report encouraging experimental results on two domains,...

• Type: Conference
• Year: 1998
• Where: AAAI
• Authors: David Joslin, David P. Clements
• Keywords: AAAI 1998, Greedy Algorithm, Intelligent Agents, Optimization SWO, Solutions