پديد آورنده :
خدام باشي امامي، شهره
عنوان :
مدل سازي اعتماد در اتحاديه هاي ابري با استفاده از نظريه بازي ها
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده برق و كامپيوتر
صفحه شمار :
يازده، ۸۱ص.: مصور، جدول، نمودار
استاد راهنما :
محمد حسين منشئي
توصيفگر ها :
رايانش ابري , اتحاديه ي ابري , اعتماد , نظريه بازي ها , بازي هاي تشكيل ائتلاف
استاد داور :
علي فانيان، ناصر قديري
تاريخ ورود اطلاعات :
1397/07/21
رشته تحصيلي :
برق و كامپيوتر
دانشكده :
مهندسي برق و كامپيوتر
چكيده انگليسي :
A Game Theoretic Approach for Trust Modeling in Cloud Federations Shohreh Khoddambashi Emami s khoddambashi@ec iut ac ir May 27 2018 Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Dr Mohammad Hossein Manshaei manshaei@cc iut ac ir Abstract Increasing usage of hardware and software infrastructures has led to notable development of cloud computing technol ogy By emerging users new requirements and variety of organization s IT services a single cloud provider CP is notcapable of serving all users growing requests To overcome limitations of the current cloud computing structure coopera tion of cloud providers and sharing their infrastructures in the form of cloud federations has been introduced as a promisingand interesting solution Therefore designing appropriate architecture and framework for cooperation of CPs is inevitable Trust of CPs to each other s and selecting suitable cooperator is one of challenging issues to cloud federation realization In this regard forming the stable coalitions in the form of trusted cloud federations by using of the cooperative game the ory is the main focus of this thesis Based on the proposed method of this research CPs are capable of analyzing theircooperators and refuse to cooperate with malicious CP To compute the trust of CPs to each other a dynamic trust functioncomposed of direct and indirect trust is proposed In modeling of indirect trust for preventing CPs from sending incorrectrecommendations credibility update function has been improved Moreover QoS factors of cloud services are consideredin the computation of the trust function In addition the proposed trust function is applied as a payoff function to a dynamicand distributed coalition formation hedonic game In the proposed algorithm each CP is required to get the approval ofthe CPs members of the selected coalition to join This property causes remarkably reduction of the number of maliciousCPs in the final coalition structure and isolates the malicious CPs in singleton coalitions Convergence and stability of thecoalition formation game are analyzed and proved Furthermore simulation of proposed algorithm is presented for twentycloud service providers with random initial conditions The results shows the homogeneity up to 95 of the coalitions aftersix time slots and also appropriate time response and availability of cloud federations Key Words Cloud Computing Cloud Federation Trust Game Theory Coalition Formation Games
استاد راهنما :
محمد حسين منشئي
استاد داور :
علي فانيان، ناصر قديري
