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09-25-2008

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Plan-based Complex Event Detection across Distributed Sources

Tim Bass
09-25-2008 09:49 AM
Here is an interesting 2008 paper, Plan-based Complex Event Detection across Distributed Sources.

Abstract

Complex Event Detection (CED) is emerging as a key capability for many monitoring applications such as intrusion detection, sensorbased activity & phenomena tracking, and network monitoring. Existing CED solutions commonly assume centralized availability and processing of all relevant events, and thus incur significant overhead in distributed settings. In this paper, we present and evaluate communication efficient techniques that can efficiently perform CED across distributed event sources.

Our techniques are plan-based: we generate multi-step event acquisition and processing plans that leverage temporal relationships among events and event occurrence statistics to minimize event transmission costs, while meeting application-specific latency expectations. We present an optimal but exponential-time dynamic programming algorithm and two polynomial-time heuristic algorithms, as well as their extensions for detecting multiple complex events with common sub-expressions. We characterize the behavior and performance of our solutions via extensive experimentation on synthetic and real-world data sets using our prototype implementation.

Source...

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net::dri::data::contact::asia

Net::DRI::Data::Contact::ASIA(3pm)			User Contributed Perl Documentation			Net::DRI::Data::Contact::ASIA(3pm)

NAME

       Net::DRI::Data::Contact::ASIA - Handle .ASIA contact data for Net::DRI

DESCRIPTION

       This subclass of Net::DRI::Data::Contact adds accessors and validation for .AERO specific data.

METHODS

       The following accessors/mutators can be called in chain, as they all return the object itself.

   cedcc()
       Stores the CED Country Code.

   cedsp()
       Stores the CED State/Province.

   cedcity()
       Stores the CED City.

   cedetype()
       Stores the CED Legal Entity Type.

   cediform()
       Stores the CED Identification Form.

   cedinum()
       Stores the CED Identification Number.

   cedothertype()
       Stores the CED other legal entity type.

   cedoiform()
       Stores the CED other identification form.

SUPPORT

       For now, support questions should be sent to:

       <netdri@dotandco.com>

       Please also see the SUPPORT file in the distribution.

SEE ALSO

       http://www.dotandco.com/services/software/Net-DRI/

AUTHOR

       Tonnerre Lombard <tonnerre.lombard@sygroup.ch>

COPYRIGHT

       Copyright (c) 2007,2008 Patrick Mevzek <netdri@dotandco.com>.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

       See the LICENSE file that comes with this distribution for more details.

perl v5.10.1							    2010-03-25					Net::DRI::Data::Contact::ASIA(3pm)