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PrefixSpan

==========

改进的PrefixSpan实现。

本prefixspan算法并不是原始的算法。我对它进行了改进,主要用于挖掘单条DNA中的频繁子序列。

类型:c

作用:此为将改进的prefixspan算法在mpi上并行的程序,输入为要挖掘的dna序列,输出为挖掘出的序列模式。

编译:mpicc prefixspan_mpi_v_8.c -o prefixspan_mpi_v_8

输入参数:-l 最小长度 -s 保存输出结果的文件名称 -p 要输入的序列的名称 -n 支持度

用法:mpiexec -f host -n 10 ./prefixspan_mpi_v_8 -p ./dna/dnaY -s sava_dnaY_100_10 -l 100 -n 10

此程序要用mpicc编译,再将编译后的程序发送到各个节点,再使用mpiexec 运行,host保存着要参与运行的节点的信息,前一个-n 10表将此mpi程序在10个主机上并行,后面的-p -s -l -n 与上面的hadoop运行参数表示的意思相同

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