海量数据下基于Hadoop的分布式FP-Growth算法
Distributed FP-Growth algorithm based on Hadoop under massive data
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摘要: 针对大数据环境下的关联挖掘问题,采取两次扫描数据库,将事务添加到相互独立的数据分区的方式,对传统FP-Growth算法进行分布式改造,进而提出了基于Hadoop框架的分布式FP-Growth算法以实现海量数据的频繁模式FP挖掘.仿真结果表明,在数据处理量逐渐增大的过程中,该算法相比较传统算法其运行时间和内存消耗的优势愈加明显,当数据处理量达到70万条时,该算法比传统算法节省约2/3的运行时间,而内存消耗仅为传统算法的1/5.说明该算法在处理海量数据时,能够显著提高FP的挖掘效率并降低内存的消耗量.
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关键词:
- FP-Growth算法 /
- Hadoop /
- 数据分区 /
- 分布式计算
Abstract: In view of the large data problem of association mining by the method of taking two times of scanning database and adding the transaction to the independent data partition, distributed renovation of traditional FP-Growth algorithm was taken, the distributed FP-Growth algorithm based on Hadoop framework was then put forward so as to realize the frequent pattern FP huge amounts of data mining. The simulation results showed that in the process of increasing data processing, the algorithm was compared with the traditional algorithm advantages of its running time and memory consumption were becoming ever more obvious. When the amount of data processing reached 700,000 items, the algorithm saved about 2/3 running time than the traditional algorithm, while the memory consumption was only 1/5 of the traditional algorithm. It showed that the algorithm could significantly improve the mining efficiency of FP and reduced the memory consumption when dealing with massive data.-
Key words:
- FP-Growth algorithm /
- Hadoop /
- data partition /
- distributed computing
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