Category: CEP Terminology
CEP Event Sources
In this post we start to list different event sources for CEP applications. I will start with a broad classification, following the probe architecture by IBM’s NetCool OMNIbus, provide examples, expand and elaborate adding market data feeds, and other event sources that come to mind. We will expand the list based on comments. Also, we [...]
Read moreInteresting CEP Use Case by Mark Hapher of Sun Microsystems
Mark Hapner of Sun Microsystems contributed a very interesting CEP use case to our event processing reference architecture working group (EPRAWG) based on RSS/Atom processing, titled: RSS and Atom – Event Based Computing for Global Applications Mark Hapner, Distinguished Engineer – SOA Strategist, Sun Microsystems To summarize, Mark says, “Long before the Internet, event based [...]
Read moreBEA Event Server Screencast: Airport Lost Baggage Use Case
BEA has a nice screencast that demonstrates event processing in airport operations. Their screencast illustrates how WebLogic Event Server can be configured to detect missing events, a requirement often discussed in many CEP and ESP applications (not unique to BEA). The demo uses SL’s RTV, also used by TIBCO and Progress Apama, as a business [...]
Read moreStandard Data Sets for CEP/IDS Evaluation
We have been discussing standard data sets for CEP on CEP-Interest lately and have introduced the topic of “event cloud generation” here. For those interested in applying CEP to intrusion detection, there is an evaluation dataset available from MIT. “These evaluations measured probability of detection and probability of false-alarm for each system under test. These [...]
Read moreBEA Publishes Event Server 2.0 Docs
BEA has made their WebLogic® Event Server 2.0 documents available in both HTML and PDF format to the general public. This is good news for everyone. Currently there are 6 PDF files: Getting Started With WebLogic Event Server Creating WebLogic Event Server Applications WebLogic Event Server Administration and Configuration Guide EPL Reference Guide WebLogic Event Server Reference [...]
Read moreClouds (Partially Order Sets) – Streams (Linearly Ordered Sets) – Part 2
Originally posted in Yahoo! CEP-Interest Here is my follow-up note on posets (partially ordered sets) and tosets (totally or linearly ordered sets) as background set theory for event processing, and in particular CEP and ESP. In my last note, we discussed posets and tosets in the context of ESP (tosets) and CEP (posets) and we [...]
Read moreClouds (Partially Order Sets) – Streams (Linearly Ordered Sets) – Part 1
Originally posted in Yahoo! CEP-Interest We read interesting discussions in the CEP and ESP market regarding terms like “clouds” and “streams”. Sometimes we observe folks talking about these terms in context of “processing time”, for example, reordering events as part of computational event processing. A closer examination of posets and linearly ordered sets leads to [...]
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