| 混沌粒子群算法在数据库查询优化中的应用 |
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| 引用本文： | 石伟.混沌粒子群算法在数据库查询优化中的应用[J].科技通报,2012,28(4):116-118. |
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| 作者姓名： | 石伟 |
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| 作者单位： | 重庆城市职业学院,重庆,402160 |
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| 摘 要： | 查询计划的一棵左深树看作是一个粒子,对于左深树上的连接操作后序遍历生成一个编码,对粒子群进行速度和位置更新操作,并通过引混沌搜索机制,对粒子进行混沌扰动,保证粒子群个体的多样性,最后通过粒子间的信息共享与传递找到最优数据库查询优化方案。
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| 关 键 词： | 粒子群算法 数据库 多连接 查询优化 |
Application of Particle Swarm Optimization Algorithm in Database Query Optimization |
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| SHI Wei.Application of Particle Swarm Optimization Algorithm in Database Query Optimization[J].Bulletin of Science and Technology,2012,28(4):116-118. |
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| Authors: | SHI Wei |
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| Institution: | SHI Wei(Urban Vocational University of Chongqing,Chongqing 402160,China) |
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| Abstract: | Query plan for a left deep tree is taken as a particle,the left deep tree is coded by the traversal,the particle swarm’ velocity and position are updated,and by introducing the chaos search mechanism to solve the particle chaos’s perturbation and ensure particle swarm diversity,finally the optimal database query optimization is found by sharing and transfer of information. |
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| Keywords: | particle swarm optimization algorithm database multi-joint query optimization |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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