Constraint-aware event stream processing

Event stream processing (ESP) [7][2][5][6] technologies enable enterprise applications such as algorithmic trading, RFID data processing, fraud detection and location-based services in telecommunications. The key applications of the ESP technologies rely on the detection of certain event patterns (usually corresponding to the exceptional cases in the application domain). Alerts will be raised after the matched pattern has been detected in the form of system notifications or triggers. Such functionality is sometimes referred to as the situation alert, which corresponds to many key tasks in enterprises computing.

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