Tom Chan

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1 Overview Coalition formation is a key topic in multi-agent systems. Coalitions enable agents to achieve goals that they may not have been able to achieve on their own. Some previous papers have shown problems in coalition games to be computationally hard. Woolbridge and Dunne [10] studied the computational complexity of several natural decision problems(More)
Nowadays relational databases are extensively covered in almost all database courses. However, protecting the ownership of data against piracy is not yet a major part of these courses. In this paper, we discuss the rationale for incorporating watermarking techniques for relational data for protecting the database ownership. We propose what must be covered(More)
BACKGROUND Routinely collected clinical data is increasingly used for health service management, audit, and research. Even apparently anonymised data are subject to data protection. The relevant principles were set out in a treaty of the Council of Europe and subsequent policy has been based on these. However, little has been written about implementing(More)
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