自私性移動P2P網(wǎng)絡(luò)中高效的資源搜索機制
發(fā)布時間:2018-04-10 01:13
本文選題:移動PP網(wǎng)絡(luò) 切入點:協(xié)同合作度 出處:《系統(tǒng)仿真學報》2017年05期
【摘要】:由于移動P2P(Peer-to-Peer)網(wǎng)絡(luò)中節(jié)點自身狀態(tài)等因素的影響,節(jié)點往往表現(xiàn)出自私性和資源偏好性,這極大地影響了網(wǎng)絡(luò)系統(tǒng)的資源搜索效率。針對該問題,給出了一種移動P2P網(wǎng)絡(luò)中基于節(jié)點協(xié)同合作度的資源搜索機制。該搜索機制通過綜合評價節(jié)點的信息轉(zhuǎn)發(fā)率、綜合相似度與核心度,選擇協(xié)同合作度高的節(jié)點作為中繼節(jié)點進行信息轉(zhuǎn)發(fā);同時,通過分析節(jié)點的主觀轉(zhuǎn)發(fā)率以建立其激勵機制,激勵節(jié)點參與資源搜索。分析與實驗結(jié)果表明該搜索機制能夠有效地提高整個系統(tǒng)的資源搜索成功率,降低其平均搜索長度,具有較好的查詢性能。
[Abstract]:Due to the influence of some factors such as the state of the nodes in the P2P Peer-to-Peer network, the nodes often show selfishness and resource preference, which greatly affects the efficiency of resource search in the network system.In order to solve this problem, a resource search mechanism based on the degree of cooperation between nodes in mobile P2P networks is proposed.By synthetically evaluating the information forwarding rate, synthesizing the similarity and the core degree, the search mechanism selects the node with high cooperative cooperation degree as the relay node to forward the information; at the same time,By analyzing the subjective forwarding rate of nodes, the incentive mechanism is established to encourage nodes to participate in resource search.The results of analysis and experiments show that the search mechanism can effectively improve the success rate of resource search and reduce the average search length of the system, and it has better query performance.
【作者單位】: 湖南人文科技學院信息學院;長沙師范學院電子信息工程系;
【基金】:國家自然科學基金(61572191,61571188) 湖南省教育廳優(yōu)秀青年科研項目(15B125) 湖南省計算機應用技術(shù)重點建設(shè)學科(湘教發(fā)[2011]76號)
【分類號】:TP393.02
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1 薛紅芳;;P2P網(wǎng)絡(luò)中節(jié)點自私性分析及對策研究[J];軟件導刊;2014年08期
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