Auditing and Provision Strategies of Utility Computing Services: A Game Theoretic Perspective

以賽局理論探討公用運算之稽核機制與服務提供策略

李永銘(Yung-Ming Li) ； 李易霖(Yi-Lin Lee)

《資訊管理學報》 14卷s期 (2007/10) Pp. 239-260

https://doi.org/10.6382/JIM.200710.0020

摘要

公用運算架構的興起，改變了企業對於是否自己建置資訊科技基礎建設的態度，此一改變將使資源逐漸開始集中。面對外在競爭環境，企業開始思考如何專注於本業，並以尋求外部資源之方式有效降低龐大的資訊科技投資。以往有關公用運算架構的研究，多半集中於訂價策略與資源最佳化配置問題，本論文提出了一個新的架構，以服務中介者作為使用者與運算服務提供者的橋樑。在此架構下，我們由賽局理論觀點探討混合策略下中介者與運算服務提供者對於稽核機制與服務提供策略的最適反應。本研究發現中介者可藉由支付給服務提供者的獎賞、罰款以及服務使用費，來主導服務提供者的服務意願。與罰款機制相較，獎賞對於整個架構的運作是較為有幫助的。除討論混合策略外，單純策略之中的決策變數也一並被討論。在混合策略情況下，獎賞、罰款與機會成本會影響稽核機制與提供服務意願；在單純策略的情況下，則需考慮獎賞、中介者本身之服務轉接成本以及機會成本。

關鍵字

公用運算 ； 競爭 ； 誘因 ； 賽局理論

並列摘要

The emergence of utility computing promises to transform the way corporations possess their IT infrastructure. This model of computing may shift IT infrastructure from being a fragmented capital asset to being a centralized utility service. As a result of increasingly competitive business environment, organizations are looking for new approaches to minimize IT costs. This forces organizations to focus on their core business and outsource computing demand. Past researches about utility computing mainly concentrate on the pricing strategy and resource utilization problem. In our paper the service broker is introduced into utility computing environment, and best response functions under mixed strategy for service broker and provider is analyzed. Our analytical results show that the service broker can dominate by controlling reward, penalty and service fee paid to service provider. In addition, in contrast to penalty, reward is more helpful to ensure the QoS. Reward, penalty and opportunity cost help to make decisions about audit and deviate in mixed strategy condition, while reward, opportunity cost and transition cost of service broker do the same thing in pure strategy.

並列關鍵字

Utility Computing ； Competition ； Incentive ； Game Theory

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