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An Improved Segment Hash Algorithm
Author(s): XU Pan, LIU Shengli, LAN Jinghong, XIAO Da
Pages: 266-
269,274
Year: 2015
Issue:
1
Journal: Computer Engineering
Keyword: hash; open address method; collision; segment hash table; five-tuple; classification;
Abstract: 为更有效地降低分段哈希算法的碰撞率,提出一种改进的分段哈希算法.在各哈希子表中采用开放地址法,降低各哈希子表中元素的碰撞率,进而降低整个分段哈希算法的碰撞率.对碰撞率、时间效率、空间效率进行分析.使用11 119 905个不同IP数据包的五元组信息,对该算法的碰撞率和时间效率进行测试.实验结果表明,改进的分段哈希算法在不增加内存使用的情况下,可有效降低分段哈希算法的碰撞率,并且随着分段哈希子表数量的增加,该算法的各项性能优势会更加明显.
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