小世界網絡上的謠言免疫策略研究

1、浙江大學計算機學院碩士學位論文小世界網絡上的謠言免疫策略研究姓名：黃金煜申請學位級別：碩士專業(yè)：計算機軟件與理論指導教師：金小剛20080515浙江大學碩士學位論文Abs昀ctAbstractStudiesaboutne似orksindicatethatmallyne研orkshaVe“smallworlde臟ct”Theref0re，sometimessmall_w’orldne鉚orkscaIlaccumtelydescribeth

2、estmctureofnet、vorksi11merealworldFurch％itisme砌ng血laIld曲port鋤toinvestigateproblenlsconcemedwiththerumorpropagationBaSedonthosefacts，westudythe11lmorpropagationonsmall一worldnet、)~，orksaIldourworkisasfollows：1W色modi匆themmo

3、rmodelintroducedbyMoeIloa11dcoauthorsw“chdescribesmemmorpropagationonnetworksWediVidetlleclaSsofpeoplewholoseinterestt0spreadtherumorinto觚osubclassesOneclaSscorrespondstothepeoplewhoacc印tthemmorbut10seinteresttopropagate

4、it；theotherclaSscorrespondstot11epeoplewhorejectthemmorhladdition，weintroduceanewparameterw11ichcaIlrepresentthecredibilityofthen珊or2BaSedonthosemodifications，we舀vemean—fieldequationsaboutthe丌刪orpropagationonsmall—wo訂dne

5、觚orksThrou曲solVingtheseequatiolls，wefindthatmereisno“mmort11reshold”onsmallworldne帆orksFurth％thepar鋤eterwhichcaIlr印resentnlecredibilityoftherumorhaSinverSerelationwithmedensityofi11dividualswhoacc印tthemmorbut10sei11teres

6、ttospreadit3WeinvestigatewhemerraIldomiln】m謝zationmechaIlismaIldtal苫etedimmullization羅nategyareefrectiVeornotinthemodified11lmormodelThrou曲numericalsimulationsaIlda11alysis，wefindthatwhentheaVeragedegreeofthene柳orkissmal

7、l，ralldomimmumzationstrategyandtargetedimmuIlizationstrategycansuCcessmllycontr01thepropagationofthemmorHowever，itisnotthecasewhelltheaVeragedegreeofthenetworkisla唱e111tlliscirc啪stallce，wecaIldecreasemeJrumorcredibilitya

8、ndapplyrandomortargetedi刪muIlizationstrateg)，atthes鋤etimeAsaconsequence，themmorpropagationc鋤bestillcon”011edwithoutimmunizingla唱edensityofindividualsonnetworl(sKeywords：WSmodel，Immunization衄eshold，Credibility，Ralldomimmu