CN101707626A - Domain-based recommendation trust integration method in peer-to-peer network - Google Patents
Domain-based recommendation trust integration method in peer-to-peer network Download PDFInfo
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- CN101707626A CN101707626A CN200910185426A CN200910185426A CN101707626A CN 101707626 A CN101707626 A CN 101707626A CN 200910185426 A CN200910185426 A CN 200910185426A CN 200910185426 A CN200910185426 A CN 200910185426A CN 101707626 A CN101707626 A CN 101707626A
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- In the peer-to-peer network based on the recommendation trust integration method in territory, it is characterized in that this method will be in the network collects the recommendation trust value that obtains, according to COS, the difference of mutual time is segmented, and by analyzing the numerical relation and variation tendency and different significance levels between the recommendation trust value, make and trust integrated result more rationally effectively, concrete steps are as follows:Step 1). node a sends to the Centroid of territory, place A with query requests, and Centroid is received query requests, and solicited message is converted to the query requests of territory to the territory, and this request is sent to other territory in the network,Step 2). all receive the territory of query requests, check the database in this territory, if preserve with b node directly mutual after evaluation result, then these data are taken out, as trusting evidence,Step 3). to depositing the arbitrarily-shaped domain I of b node interaction results in the step 2, gather the whole trust evidences in the territory, and, it is carried out a subseries according to the COS of trusting in the evidence,Step 4). to sorted trust evidence cluster once, the time threshold according to setting carries out secondary classification to it, is divided into nearest trust evidence and in the past trust evidence,Step 5). according to corresponding formulas, nearest trust evidence and in the past trust evidence are carried out integrated respectively, it is calculated that out current prestige by nearest credentials, and it is calculated that out historical prestige by credentials in the past,Step 6). by the value of current prestige CR and historical prestige HR, by formula Calculate integrated weights λ, weighted average calculation goes out initial recommendation trusts,Step 7). territory I trusts the initial recommendation of all COS and carries out integratedly, establishes k and be the specified services in the query requests, and i is that initial recommendation is trusted corresponding COS, and n is the quantity of whole COS; According to formula Calculate the service weights, weighted average calculation goes out recommendation trust in the territory,Step 8). all calculate the territory of recommendation trust in the territory, and the result is passed to territory A, by hamming approach degree formula, calculate the territory similarity in each territory by territory A, and weighted average calculation goes out final recommendation trust, and the result is passed to node a,Step 9). node a has obtained the recommendation trust integration value about node b, and overall process finishes.
- 2. based on the recommendation trust integration method in territory, it is characterized in that in the computational process of historical prestige in the peer-to-peer network according to claim 1,HR=BSD*V+δ*BRD(HR∈[0,1])V wherein is the historical weighted average that comprises the time attenuation function of trusting evidence, and BSD is a behavior stability index, and BRD is a behavior fluctuation degree index,By setting up parameter δ, the oscillating-type node is distinguished from the GENERAL TYPE node, and by behavior trend BT and parameter θ, the value of δ has been done effectively defined; Be specially: during BT>θ, δ=1; δ=0 during 1/ θ<BT<θ; δ=-1 during BT<1/ θ, θ is the threshold value of the validity of behavior trend, θ>1.
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Cited By (8)
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CN101867608A (en) * | 2010-05-24 | 2010-10-20 | 中国科学院计算技术研究所 | Centralized block switching P2P (peer-to-peer) file sharing system and service method thereof |
CN101895577A (en) * | 2010-07-06 | 2010-11-24 | 中国科学院计算技术研究所 | Distribution method of network sharing resources |
CN102006305A (en) * | 2010-12-08 | 2011-04-06 | 上海交通大学 | Method for suppressing malicious behavior based on distributed recommendable reputation in peer-to-peer (P2P) network |
CN102347917A (en) * | 2011-11-04 | 2012-02-08 | 西安电子科技大学 | Contact semantic grouping method for network message communication |
CN102638795A (en) * | 2012-04-23 | 2012-08-15 | 浙江大学 | Trust evaluation method of distributed sensor network capable of resisting attacks |
WO2012162873A1 (en) * | 2011-05-27 | 2012-12-06 | Nokia Corporation | Method and apparatus for role-based trust modeling and recommendation |
CN104102648A (en) * | 2013-04-07 | 2014-10-15 | 腾讯科技(深圳)有限公司 | User behavior data based interest recommending method and device |
CN104574148A (en) * | 2015-01-09 | 2015-04-29 | 西安融成科技有限公司 | Trust system establishment method for visual community |
Family Cites Families (3)
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CN100518086C (en) * | 2006-01-13 | 2009-07-22 | 华为技术有限公司 | Method of controlling coordinate network and its node |
CN101404592A (en) * | 2008-11-14 | 2009-04-08 | 西安交通大学 | Total trust degree decision method based on history evidence window |
CN101404572A (en) * | 2008-11-14 | 2009-04-08 | 西安交通大学 | Network node total trust degree estimation method based on feedback trust aggregation |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101867608B (en) * | 2010-05-24 | 2013-03-13 | 中国科学院计算技术研究所 | Centralized block switching P2P (peer-to-peer) file sharing system and service method thereof |
CN101867608A (en) * | 2010-05-24 | 2010-10-20 | 中国科学院计算技术研究所 | Centralized block switching P2P (peer-to-peer) file sharing system and service method thereof |
CN101895577A (en) * | 2010-07-06 | 2010-11-24 | 中国科学院计算技术研究所 | Distribution method of network sharing resources |
CN101895577B (en) * | 2010-07-06 | 2013-02-13 | 中国科学院计算技术研究所 | Distribution method of network sharing resources |
CN102006305A (en) * | 2010-12-08 | 2011-04-06 | 上海交通大学 | Method for suppressing malicious behavior based on distributed recommendable reputation in peer-to-peer (P2P) network |
CN102006305B (en) * | 2010-12-08 | 2013-05-01 | 上海交通大学 | Method for suppressing malicious behavior based on distributed recommendable reputation in peer-to-peer (P2P) network |
WO2012162873A1 (en) * | 2011-05-27 | 2012-12-06 | Nokia Corporation | Method and apparatus for role-based trust modeling and recommendation |
CN102347917A (en) * | 2011-11-04 | 2012-02-08 | 西安电子科技大学 | Contact semantic grouping method for network message communication |
CN102347917B (en) * | 2011-11-04 | 2014-04-16 | 西安电子科技大学 | Contact semantic grouping method for network message communication |
CN102638795A (en) * | 2012-04-23 | 2012-08-15 | 浙江大学 | Trust evaluation method of distributed sensor network capable of resisting attacks |
CN102638795B (en) * | 2012-04-23 | 2014-11-19 | 浙江大学 | Trust evaluation method of distributed sensor network capable of resisting attacks |
CN104102648A (en) * | 2013-04-07 | 2014-10-15 | 腾讯科技(深圳)有限公司 | User behavior data based interest recommending method and device |
CN104102648B (en) * | 2013-04-07 | 2017-12-01 | 腾讯科技(深圳)有限公司 | Interest based on user behavior data recommends method and device |
CN104574148A (en) * | 2015-01-09 | 2015-04-29 | 西安融成科技有限公司 | Trust system establishment method for visual community |
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