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:(1984-),,,,;(1982-),,,,;(1984-),,,,。0/1,,(,430074):,,。,0/1,。:;:TP312:A:1672-7800(2009)05-0060-021,,,。:NM,wi,ixi,pixi(0≤xi≤1,pi≥0),?M。xi01,,,0/1。,、、、。NP,2n,O(2n)。,,。22.1(ParticleSwarmOptimization,PSO),。,:。。。,。2.2PSO,,“”。,,。,。,,,。2.3PSO,(),。,“”。“”,,pbest;,gbest。,:vk+1=c0vk+c1(pbestk-xk)+c2(gbestk-xk)(1)xk+1=xk+vk+1(2),vk;pbestk;gbestk。vk+1vk、pbestk-xkgbestk-xk,1。1vmax(vmax0),vmax,SoftwareGuide8%620096Vol.8No.6Jun.20096vmax。(1)c0,c1,c2,c0,,,,(0,1);c1,c2,pbestgbest,(0,2)。2.4:①,n,nn,n;②;While()do;③;pbest,pbest;④pbestgbest;⑤①,,vmax;⑥②,。End230/13.10/1maxni=1Σpixini=1Σcixi≤Cxi=0,1(i=1,2,3,…,n)X(x1,x2,…,xn)T,,。0/1,,,:(1)c0vk,,c1(pbestk-xk)+c2(gbestk-xk),。3.2①old1old2,old2;②old1old2。old1=100101111001,old2=011010101100,01011,new1=1001001011013.3①X(x1,x2,…,xn),(xi+xi+1,…,xj);②xj←xj。100101111001,4,10000111001。3.40/1①np,nmax,npX0;②l0,plbest,pxbest,plbest,glbestgxbest。While(nmax)do;forj=1tonp;③jX0(j)gxbestX1(j);④X1(j)pxbestX1(j);⑤X1(j);⑥l1;⑦X1(j)plbest(j),pxbest(j)=X1(j),plbest(j)=l1(j);End;(8)plbest,glbestgxbest;⑨x0←x1;End;⑩glbestgxbest。:,,O(3np)(),nmax,O(3npnmax)。4:n=10,C=269g,{p1,p2,…,p10}={55,10,57,5,4,50,8,61,85,87},{c1,c2,…,c10}={95,4,60,32,23,72,80,62,65,46}g。295,X*={0,1,1,1,0,0,0,1,1,1}。(100):np=10,nmax=10,295,246,28。np=20,nmax=30,295,294,98。5,,,。,,,,。,,。,,。:[1],,.[M].:,2000.[2],.[M].:,2004.,,:0/161··ParticleSwarmOptimizationabout0/1KnapsackProblemAbstract:AsatypicalcombinatorialoptimizationprobleminOperationsResearch,knapsackproblemhasabroadbackgroundandmanydifferentwaystosolve.ThispaperprovidesamethodbasedonPSOandthismethodusessomeideasaboutGeneticAlgorithmtoapplyPSOinknapsackproblemandgainedbetterresults.KeyWords:KnapsackProblem;PSO[3],.[M].:,2006.[4],.0/1[J].,2005(10).[5].0/1[J].,2005(12).(:):(1975-),,,,,。(,451191):,、(A*),:,、。:;;;A*;:TP312:A:1672-7800(2009)06-0062-030,,,()(),,。:,。,,;,,,,A*。,,,、。1:3×31、2、3、4、5、6、7、8,。()(),1。1,。1,7。,4,、、、。(4)。,,。SoftwareGuide8%620096Vol.8No.6Jun.2009
本文标题:关于0-1背包问题的粒子群优化算法-张蓉蓉
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