基于改進(jìn)的灰狼算法優(yōu)化BP神經(jīng)網(wǎng)絡(luò)的人侵檢測方法

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Intrusion detection method based on improved grey wolf optimization algorithm optimized BPneural network

PENG Qingyuan1， WANG Xiaofeng，2，TANG Ao1，HUA Yingying1，HE Fei'，LIU Jianping1，2 （1.SchoolofComputerScienceandEngineering，NorthMinzu University，Yinchuan75oo21，China; 2.KeyLabelsassi

Abstract：Network securityissuesare becoming moreand more prominent in today'sworld.Theintrusiondetection technologyhasbeenrapidlydevelopedasanimportantpartinthefieldofnetworksecurity.Atpresent，BPneuralnetworkis widelyusedinintrusiondetection.However，thweightseletingofthetaditioalBnuraletworkisiaccurate，tsleaing eficiencyislowanditispronetofalingintolocalminima.Fortheaboveshortcomings，anintrusiondetectionmethodbasedon theimproved greywolfoptimization（IGWO）algorithmoptimizedBPneuralnetwork isproposed.TheIGWOalgorithmextends thesearcrangeof thewolf pack bychanging the linearcontrolparametersandadingtheinversecotangentinertia weight strategyinthegraywolfpositionupdateformulatoavoidfalingintothelocaloptimalsolution.Theimprovedalgorithmisused tooptimizetheinitialweightsandthresholdvaluesoftheBPneuralnetwork，andtheoptimizedBPneuralnetworkisappliedto intrusiondetection.TheexperimentalresultsshowthattheIGWOalgorithmhasbeterstability，optimizing eficiencyand optimizingaccuracy，andtheimprovedintrusiondetectionmethodisnotprone tofaling intolocalminima，hasstrong generalization ability，and has high prediction accuracy and reliability.

Keywords：nonlinear control parameter;inertia weight;GWOalgorithm;BPneural network；intrusiondetection;network security

0 引言

隨著網(wǎng)絡(luò)技術(shù)的發(fā)展，計算機(jī)網(wǎng)絡(luò)的安全性受到越來越多的關(guān)注。（剩余10024字）