Safe-Zones for Monitoring Distributed Streams

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Provided by: RWTH Aachen University
Topic: Data Management
Format: PDF
In many emerging applications, the data which has to be monitored is of very high volume, dynamic, and distributed, making it infeasible to collect the distinct data streams to a central node and process them there. Often, the monitoring problem consists of determining whether the value of a global function, which depends on the union of all streams, crossed a certain threshold. A great deal of effort is directed at reducing communication overhead by transforming the monitoring of the global function to the testing of local constraints, checked independently at the nodes.
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