Microsoft Word - 通讯内容.doc 关键词： Web挖掘；最大频繁项集；剪枝策略；搜索空间 [gap=945]Key words: Web mining; maximal frequent itemsets; pruning strategy; search space
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PDStream firstly divided data space into grids, then used an improved dimension tree structure to maintain and update the data stream summary statistics. Designed a pruning strategy to prune the sparse grids in dimension tree periodically.
信息，设计了一种周期性剪枝策略，周期性地剪去维度树中的稀疏网格，最后采用深度优先搜索算法在线处理聚类请求。
参考来源 - 基于衰减窗口与剪枝维度树的实时数据流聚类—《计算机应用研究》—2009年第4期—龙源期刊网First of all, we made models of users’VCR actions through analyzing statistics of users’historic access data. After optimizing these models with specific state-pruning strategy, we extract the access patterns which represent the consumer’s access habits.
通过对用户历史访问数据的统计和分析,结合状态合并算法为用户拖拽操作建立马尔科夫模型,再通过状态剪枝算法优化从而得到选择型马尔科夫模型,从中提取出代表用户访问习惯的访问模式,结合LRU-2缓存替换算法构建出专门为流媒体环境设计的FPMM_VLike_LRU_2缓存管理策略。
参考来源 - 基于选择型马尔科夫模型的CDN缓存管理系统研究Moreover, this algorithm adopts an effective iterative and pruning strategy that could compress the scale of candidate patterns and reduce the communication cost.
而且,该算法采用了有效的迭代剪枝技术,大大压缩了候选模式的数量,降低了通信代价。
参考来源 - 网络告警分布式加权关联规则挖掘系统的研究与设计·2,447,543篇论文数据，部分数据来源于NoteExpress
Moreover, this algorithm adopts an effective iterative and pruning strategy that could compress the scale of candidate patterns and reduce the communication cost.
而且，该算法采用了有效的迭代剪枝技术，大大压缩了候选模式的数量，降低了通信代价。
Then, with the summing-up of pruning methods of decision tree, we make certain the pruning strategy that adapts to dynamic fuzzy decision tree.
总结了决策树的剪枝方法，并给出了动态模糊决策树的剪枝策略。
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