文件名称:main123
- 所属分类:
- 人工智能/神经网络/遗传算法
- 资源属性:
- [C/C++] [源码]
- 上传时间:
- 2012-11-26
- 文件大小:
- 2kb
- 下载次数:
- 0次
- 提 供 者:
- lixi*****
- 相关连接:
- 无
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Apriori核心算法过程如下:
过单趟扫描数据库D计算出各个1项集的支持度,得到频繁1项集的集合。
连接步:为了生成,预先生成,由2个只有一个项不同的属于的频集做一个(k-2)JOIN运算得到的。
剪枝步:由于是的超集,所以可能有些元素不是频繁的。在潜在k项集的某个子集不是中的成员是,则该潜在频繁项集不可能是频繁的可以从中移去。
通过单趟扫描数据库D,计算中各个项集的支持度,将中不满足支持度的项集去掉形成。-Apriori core algorithm process is as follows:
After single trip brain-scan database D calculated each 1 itemsets support and get frequent 1 itemsets collection.
Connect step: in order to create, a predetermined by 2 generate, only one item different belongs to the frequency of the set a (k- 2) JOIN operation get.
The pruning step: because yes superset and may, therefore, some elements are not frequent. In potential k itemsets is a subset of the members of the potential is, the frequent itemsets impossible is the frequent can find removed.
Through a single trip brain-scan database D, calculation of various itemsets support and will not satisfy the support degree itemsets removed form.
过单趟扫描数据库D计算出各个1项集的支持度,得到频繁1项集的集合。
连接步:为了生成,预先生成,由2个只有一个项不同的属于的频集做一个(k-2)JOIN运算得到的。
剪枝步:由于是的超集,所以可能有些元素不是频繁的。在潜在k项集的某个子集不是中的成员是,则该潜在频繁项集不可能是频繁的可以从中移去。
通过单趟扫描数据库D,计算中各个项集的支持度,将中不满足支持度的项集去掉形成。-Apriori core algorithm process is as follows:
After single trip brain-scan database D calculated each 1 itemsets support and get frequent 1 itemsets collection.
Connect step: in order to create, a predetermined by 2 generate, only one item different belongs to the frequency of the set a (k- 2) JOIN operation get.
The pruning step: because yes superset and may, therefore, some elements are not frequent. In potential k itemsets is a subset of the members of the potential is, the frequent itemsets impossible is the frequent can find removed.
Through a single trip brain-scan database D, calculation of various itemsets support and will not satisfy the support degree itemsets removed form.
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main123.cpp