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<p><b>Abstract</b>—We address the challenges of building a good content adaptation service for mobile devices and propose a decision engine that is user-centric with QoS awareness, which can automatically negotiate for the appropriate adaptation decision to use in the synthesis of an optimal adapted version. The QoS-sensitive approach complements the lossy nature of the transcoding operations. The decision engine will look for the best trade off among various parameters in order to reduce the loss of quality in various domains. Quantitative methods are suggested to measure the QoS of the content versions in various quality domains. Based on the particular user perception and other contextual information on the client capability, the network connection, and the requested content, the proposed negotiation algorithm will determine a content version with a good aggregate score. We have built a prototype document adaptation system for PDF documents to demonstrate the viability of our approach.</p>
Content adaptation, content negotiation, user preferences, decision engine, context awareness, mobile computing.

W. Y. Lum and F. C. Lau, "User-Centric Content Negotiation for Effective Adaptation Service in Mobile Computing," in IEEE Transactions on Software Engineering, vol. 29, no. , pp. 1100-1111, 2003.
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