【摘要】 提出用蚁群算法来解决物理空间约束下的物化视图选择问题,算法中应用信息素的局部和全局更新,并对每次迭代的最优解进行局部搜索,最终得出合理的解决方案。实验结果表明,应用蚁群算法可以有效地解决物化视图选择问题,并且其求解性能优于遗传算法。更多还原

【Abstract】 Ant Colony System(ACS)method was adopted to solve the problem of materialized view selection under a storage space constraint.The pheromone was updated locally and globally,and the optimization solution of each iteration was locally searched,and finally a reasonable solution was got.Compared with genetic algorithm,the simulation results of ACS show its superiority.更多还原