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电子学报  2012 

基于环境感知的可信QoS评价与服务选取策略

DOI: 10.3969/j.issn.0372-2112.2012.06.011, PP. 1133-1140

Keywords: 服务组合,QoS评价,信任推理,服务选取,服务质量

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Abstract:

面向服务计算网络中,迫切需要对服务实体的QoS与可信性做出客观的评价.针对服务实体QoS的评价通常只是基于对用户感知到的QoS一种加权,不能客观反映实际网络环境下服务实体所能够提供的QoS问题,论文结合服务实体实际服务组合环境来表征服务实体的QoS,提出了一种基于环境感知的可信QoS评价与服务选取策略:(1)采用不同负载下的QoS特征向量来表征服务实体的QoS;(2)建立一种受限于可信实体的信任推理与演化机制,有效避免信任演化机制中信任泛化问题;(3)基于可信实体演化推导服务实体的可信度与QoS的特征向量;(4)结合当前的服务负载情况,较为客观地评价服务实体实际所能够提供的QoS.论文最后给出了综合的可信QoS评价与服务选取算法,实验结果表明了策略的有效性.

References

[1]  S Ran.A model for web services discovery with QoS[J].ACM SIGecom Exchanges,2003,4(1):1-10.
[2]  李研,等.一种考虑QoS 数据可信性的服务选择方法[J].软件学报,2008,19(10):2620-2627. LI Yan,et al.Service selection approach considering the trustworthiness of QoS data[J].Journal of Software,2008,19(10):2620-2627.(in Chinese)
[3]  P Bocciarelli,et al.A model-driven method for describing and predicting the reliability of composite services[J].Software and Systems Modeling,2010,10(2):1-16.
[4]  P Zhedan,et al.A QoS enhanced framework and trust model for effective web services selection[J].Journal of Web Engineering,2010,9(2):327-346.
[5]  RKM Esfahani,et al.Reputation improved web services discovery based on QoS[J].Journal of Convergence Information Technology,2010,5(9):206-214.
[6]  A Satsiou,et al.Reputation-based resource allocation in P2P systems of rational users[J].IEEE Transactions on Parallel and Distributed Systems,2010,21(4):466-479.
[7]  X Jin,et al.Reputation estimation and query in peer-to-peer networks[J].IEEE Communications Magazine,2010,48(4):122-127.
[8]  刘济波,等.基于两层声誉演化模型的服务组合选取策略[J].中南大学学报(自然科学版),2009,40(3):756-762. LIU Ji-bo,et al.A service composite selection policy based on two-tier model reputation evolution[J].Journal of Central South University(Science and Technology),2009,40(3):756-762.(in Chinese)
[9]  M A Jovanovic.Modeling Large-Scale Peer-to-Peer Networks and a Case Study of Gnutella .USA:University of Cincinnati,2001.
[10]  A Barabasi,et al.Emergence of scaling in random networks[J].Science,1999,286(5439):509-512.
[11]  L Zeng,et al.QoS-aware middleware for web services composition[J].IEEE Transactions on Software Engineering,2004,30(5):311-327.
[12]  N Srirajun,et al.Trustable web services with dynamic confidence time interval .Advances in Information Sciences and Service Sciences,2011,3(4) :48-58.
[13]  P Dewan,et al.P2P reputation management using distributed identities and decentralized recommendation chains[J].IEEE Transactions on Knowledge and Data Engineering,2010,22(7):1000-1013.
[14]  A Adala,et al.Discovery of semantic web services with an enhanced-Chord-based P2P network[J].International Journal of Communication Systems,2010,23(11):1353-1365.
[15]  王勇,等.信任增强的服务组合调度算法[J].电子学报,2009,37(10):2234-2238. WANG Yong,et al.A trust enhanced service composition scheduling algorithm[J].Acta Electronica Sinica,2009,37(10):2234-2238.(in Chinese)
[16]  D J Watts,et al.Collective dynamics of small-world networks[J].Nature,1998,393(6684):440-442.

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