Surveillance and monitoring systems are recently widely used to monitor the operation of various objects, ranging from a single computer or other device to large infrastructures such as enterprise-size computer networks or modern buildings. They help routine operators as well as strategic management to detect faults, outages, external and internal threats, unusual behavior but also to discover frauds and fine tune efficiency. Monitoring systems are based on observing time-series of events, e.g. netflow records in computer networking or values from temperature measurements in rooms. To disclose certain patterns in the series, Complex event processing techniques can be employed. The talk will show selected application cases where also an integrated approach using ETL (Extract-Transform-Load) systems are applied.
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