Distributed Complex Event Processing with Query Rewriting

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Provided by: Association for Computing Machinery
Topic: Big Data
Format: WORD
The nature of data in enterprises and on the Internet is changing. Data used to be stored in a database first and queried later. Today timely processing of new data, represented as events, is increasingly valuable. In many domains, Complex Event Processing (CEP) systems detect patterns of events for decision making. Examples include processing of environmental sensor data, trades in financial markets and RSS web feeds. Unlike conventional database systems, most current CEP systems pay little attention to query optimization. They do not rewrite queries to more efficient representations or make decisions about operator distribution, limiting their overall scalability.
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