inverse feedback

inverse feedback

[′in‚vərs ′fēd‚bak]
(control systems)
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Different from regular ACO algorithm, the dissemination of pheromone in this research adopts the inverse feedback mechanism: ants do not disseminate pheromone in the process of search; in addition, the pheromone is updated only after finding the whole path for the machine layout is searched and pheromone is given to the neighbor node by using formula (22) which combines the objective function and a constraint, and also f in (22) lies in shaded area of the graph as in Figure 5.
Based on the strategy of local polar coordinate system, pheromone inverse feedback disseminating mechanism and the positive feedback perceiving mechanism mentioned before result in an improvement of the ACO algorithm.
In addition, the positive feedback mechanism of pheromone perception and the inverse feedback mechanism which assigns value inversely at the end of search process significantly contribute to the improvement of ACO algorithm.

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