1、大連理工大學(xué)碩士學(xué)位論文網(wǎng)格中基于相似推薦選擇的信任模型姓名：鐘煒申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：軟件工程指導(dǎo)教師：李明楚20071215網(wǎng)格中基于相似推薦選擇的信任模型ASimilarRecommendationSelectionBasedTrustModelillGTidAbstractAlong謝themergenceofgridtechnologytheusermanagementisn’tcentralclosedandcontrol

2、lableGridsystemisfacingallkindsofthreatsthatincludethreatsfromtheinnerofsystemandthreatsfromtheouterofsystemTraditionalcomputersecuritymainlyresearchesonpreventingintrusionfromtheouterofsystemHowevertraditionalmethodhasn

3、othingtodo、】l，iththreadsfromtheinnerofsystemSoitisnecessarytoevaluatethenetworkbehaviorofusersingridcomputingThusevaluationoftheusef’SbehaviorcanreflecthisreliabilityⅢSdissertationstudid$howtobuildtrustmodelfor面dcomputin

4、ginordertofindoutmalieiOIlSRSeI_sandimprovesecurityandreliabilityofsystem1fllisdissertationanalysestrustmodelsavailableinGridsystemandhasfoundthattherearesomeshortcomingsinthesetrustmodelsFirstofall，whentherearesomemalic

5、iousnodesinGridthosen1IstmodelscannotevaluatetrustdegreeaccuratelybecameofthebadmouthingofthesemaliciousnodesSecondlytheremaybesomecollusioninGridsystemWh∞thescaleofcollusionbecomelargeitwillbehardfortheseIrustmodelstoma

6、kerightevaluafionTosolvetheseproblems，thispaperproposedasimilarrecommendationselectionbasedtrustmodelinGridNewtrustmodelwillimprovetheevaluationof協(xié)塒degrceandma：kcmlstdegreemoreac咄鋤ebyselectingsimilarrecommendationAtlastt

7、hispaperdesignedaseriesofsimulationsuchasvalidatingthechalact商sticofnewmodel，controltomaliciousnodes，infectiontothemodelwithdishonestllod囂ofdifferentpercentsTheseexperimentsvalidatedthesensitivityastringency，validityandr