针对传统的两阶段高模糊效用挖掘算法存在产生大量候选项集、忽略项集之间的联系和需要重复扫描数据库的问题,提出了一阶段基于模糊列表的相关高模糊效用挖掘算法(Correlated High Fuzzy Utility Mining Algorithm Based on Fuzzy List,...针对传统的两阶段高模糊效用挖掘算法存在产生大量候选项集、忽略项集之间的联系和需要重复扫描数据库的问题,提出了一阶段基于模糊列表的相关高模糊效用挖掘算法(Correlated High Fuzzy Utility Mining Algorithm Based on Fuzzy List,CoHFUIM)。算法设计了新的模糊列表结构(FHUI-list),使挖掘过程仅需扫描一次数据库,提高了运行效率;上述算法增加了相关性约束并提出了Cos-prune剪枝策略,减少了候选项集的数量,使挖掘出的项集既是高效用的也是高相关的;为了使上述算法适用于动态数据库,提出了改进算法CoHFUIM+。在Chess、Connect和Mushroom三个真实数据集进行仿真,结果表明改进算法的运行时间、内存使用及延展性均优于经典算法TPFU。展开更多
In the process of bromine production,because of lag adjustment methods,there are problems of adjusting delay,raw material wastage and low growth rate.By considering the nature of bromine production,with the help of fu...In the process of bromine production,because of lag adjustment methods,there are problems of adjusting delay,raw material wastage and low growth rate.By considering the nature of bromine production,with the help of fuzzy data processing method,computer detection and display technique,we designed an automatic detection instrument for the ratio of chlorine to bromine in oxidized liquid of bromine production.This instrument can be used to detect the different parameters of raw materials adjustment and control in real time,and afford assurance that raw materials will be adjusted in time.This paper briefly introduces the working mechanism,hardware and software design of the instrument.展开更多
文摘针对传统的两阶段高模糊效用挖掘算法存在产生大量候选项集、忽略项集之间的联系和需要重复扫描数据库的问题,提出了一阶段基于模糊列表的相关高模糊效用挖掘算法(Correlated High Fuzzy Utility Mining Algorithm Based on Fuzzy List,CoHFUIM)。算法设计了新的模糊列表结构(FHUI-list),使挖掘过程仅需扫描一次数据库,提高了运行效率;上述算法增加了相关性约束并提出了Cos-prune剪枝策略,减少了候选项集的数量,使挖掘出的项集既是高效用的也是高相关的;为了使上述算法适用于动态数据库,提出了改进算法CoHFUIM+。在Chess、Connect和Mushroom三个真实数据集进行仿真,结果表明改进算法的运行时间、内存使用及延展性均优于经典算法TPFU。
文摘In the process of bromine production,because of lag adjustment methods,there are problems of adjusting delay,raw material wastage and low growth rate.By considering the nature of bromine production,with the help of fuzzy data processing method,computer detection and display technique,we designed an automatic detection instrument for the ratio of chlorine to bromine in oxidized liquid of bromine production.This instrument can be used to detect the different parameters of raw materials adjustment and control in real time,and afford assurance that raw materials will be adjusted in time.This paper briefly introduces the working mechanism,hardware and software design of the instrument.
