Broker: A Trust-Aware Service Brokering Scheme for Multiple Cloud Collaborative Services">

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T-Broker: A Trust-Aware Service Brokering Scheme for Multiple Cloud Collaborative Services

機(jī)譯：T- Broker ：一種用于多云協(xié)作服務(wù)的信任感知服務(wù)代理方案

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摘要

Oriented by requirement of trust management in multiple cloud environment, this paper presents T-, a trust-aware service brokering scheme for efficient matching cloud services (or resources) to satisfy various user requests. First, a trusted third party-based service brokering architecture is proposed for multiple cloud environment, in which the T- acts as a middleware for cloud trust management and service matching. Then, T- uses a hybrid and adaptive trust model to compute the overall trust degree of service resources, in which trust is defined as a fusion evaluation result from adaptively combining the direct monitored evidence with the social feedback of the service resources. More importantly, T- uses the maximizing deviation method to compute the direct experience based on multiple key trusted attributes of service resources, which can overcome the limitations of traditional trust schemes, in which the trusted attributes are weighted manually or subjectively. Finally, T- uses a lightweight feedback mechanism, which can effectively reduce networking risk and improve system efficiency. The experimental results show that, compared with the existing approaches, our T- yields very good results in many typical cases, and the proposed system is robust to deal with various numbers of dynamic service behavior from multiple cloud sites.
機(jī)譯：針對(duì)多云環(huán)境中信任管理的需求，本文提出了一種T-（信任感知服務(wù)代理方案），用于高效匹配云服務(wù)（或資源）以滿足各種用戶需求。首先，針對(duì)多云環(huán)境提出了一種基于信任的第三方服務(wù)中介體系結(jié)構(gòu)，其中T-充當(dāng)云信任管理和服務(wù)匹配的中間件。然后，T-使用混合自適應(yīng)信任模型來(lái)計(jì)算服務(wù)資源的總體信任度，其中信任被定義為通過(guò)將直接監(jiān)視的證據(jù)與服務(wù)資源的社會(huì)反饋進(jìn)行自適應(yīng)組合而得到的融合評(píng)估結(jié)果。更重要的是，T-使用最大偏差法基于服務(wù)資源的多個(gè)關(guān)鍵可信屬性來(lái)計(jì)算直接體驗(yàn)，可以克服傳統(tǒng)信任方案的局限性，傳統(tǒng)的信任方案是對(duì)信任屬性進(jìn)行手動(dòng)或主觀加權(quán)。最后，T-使用輕量級(jí)反饋機(jī)制，可以有效降低網(wǎng)絡(luò)風(fēng)險(xiǎn)并提高系統(tǒng)效率。實(shí)驗(yàn)結(jié)果表明，與現(xiàn)有方法相比，我們的T-在許多典型情況下都能產(chǎn)生很好的結(jié)果，并且所提出的系統(tǒng)對(duì)于處理來(lái)自多個(gè)云站點(diǎn)的各種動(dòng)態(tài)服務(wù)行為具有魯棒性。

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