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语义相似哈希构建语义DHT网络

DOI: 10.13190/j.jbupt.2013.05.003, PP. 10-14

Keywords: 语义相似哈希,标准α稳定分布,资源标识符分配,语义Chord网,语义搜索

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Abstract:

传统的结构化对等网络以分布式哈希表(DHT)为核心,只支持基于特定关键字的精确搜索,不支持语义搜索。而为支持语义搜索而提出的语义DHT网络存在路由层次多、查准率低等问题。为此,基于标准α稳定分布提出了语义相似哈希对Chord节点上资源进行标识符分配,使语义相似资源具有相近的标识符,从而可将语义相似资源存放在Chord中相同或相近的节点上,实现对语义搜索的支持。仿真结果表明,使用语义相似哈希分配资源标识符的Chord网络可以在1。07%的节点范围实现70%查全率和80%的查准率,在单层拓扑上实现了语义搜索功能。

References

[1]  刘乃文,刘芳爱,刘书昌.环-皮特森簇网格的资源搜索机制[J].北京邮电大学学报,2010,33(4): 59-63.Liu Naiwen,Liu Fang'ai,Liu Shuchang.Research on resource search mechanism of ring Petersen(k) cluster grid[J].Journal of Beijing University of Posts and Telecommunications,2010,33(4): 59-63.
[2]  Ion Stoica,Robert Morris,David Liben Nowell,et al.Chord: a scalable peer-to-peer lookup protocol for Internet applications[J].IEEE/ACM Transactions on Networking,2003: 17-32.
[3]  张翀.基于对等计算的分布式时空索引技术研究[D].长沙: 国防科技大学,2011.
[4]  Mario Bisignano,Giuseppe Di Modica,Orazio Tomarchio.JaxSON: a semantic P2P overlay network for webservice discovery[C]//Proceedings of IEEE Congress on Services Part I,USA: IEEE,2009: 438-445.
[5]  孙名松,刘杰,李胜利.基于语义划分的P2P 搜索技术研究[J].计算机技术与发展,2010,20(8): 75-78.Sun Mingsong,Liu Jie,Li Shengli.Research on P2P searching technology based on semantic division[J].Computer Technology and Development,2010,20(8): 75-78.
[6]  Indrajit Bhattachary,Srinivas R Kashya,Srinivasan Parthasarathy.Similarity searching in peer-to-peer databases[C]//Proceedings of International Conference on Distributed Computing Systems(ICDCS).USA: IEEE Computer Society,2005: 329-338.
[7]  Zheng Weishi,Gong Shaogang,Tao Xiang.Person re-identification by probabilistic relative distance comparison//Proceedings of Computer Vision and Pattern Recognition(CVPR).USA: IEEE Computer Society,2011: 649-656.
[8]  Nolan,John.Stable distributions: models for heavy-tailed data[M].Birkhauser:,2003: 18-20.
[9]  Najim Dehak,Patrick Kenny,Réda Dehak,et al.Front-end factor analysis for speaker verification[J].Audio,Speech,and Language Processing,IEEE Transactions on 19,2011(4): 788-798.

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