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173
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SECON
2008
IEEE
16 years 28 days ago
2008
IEEE
Abstract—In this paper, we propose and evaluate two distributed protocols for finding low-cost broadcast and multicast trees in wireless networks. The constructed trees can then...
181
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FOCS
2007
IEEE
16 years 27 days ago
2007
IEEE
We present a near-optimal reduction from approximately counting the cardinality of a discrete set to approximately sampling elements of the set. An important application of our wo...
217
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ICTAI
2007
IEEE
16 years 26 days ago
2007
IEEE
We review a method of generating logical rules, or axioms, from empirical data. This method, using closed set properties of formal concept analysis, has been previously described ...
187
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IDEAS
2007
IEEE
16 years 26 days ago
2007
IEEE
Historically, bitmap indexing has provided an important database capability to accelerate queries. However, only a few database systems have implemented these indexes because of t...
194
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IEEEARES
2007
IEEE
16 years 26 days ago
2007
IEEE
Access control in decentralised collaborative systems present huge challenges especially where many autonomous entities including organisations, humans, software agents from diff...