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Efficiently correlating complex events over live and archived data streams

Nihal Dindar, Peter M. Fischer, Merve Soner, Nesime Tatbul
2011 Proceedings of the 5th ACM international conference on Distributed event-based system - DEBS '11  
Correlating complex events over live and archived data streams, which we call Pattern Correlation Queries (PCQs), provides many benefits for domains which need real-time forecasting of events or identification  ...  Existing work has focused either on complex event processing over a single type of stream source (i.e., either live or archived), or on simple stream correlation queries (e.g., live events trigerring a  ...  System Setting DejaVu is a CEP system that integrates declarative pattern matching over live and archived streams of events [15] .  ... 
doi:10.1145/2002259.2002293 dblp:conf/debs/DindarFST11 fatcat:kaaa7kbafnbctorw7fziwsfyze

Log-Based Distributed Security Event Detection Using Simple Event Correlator

J Myers, M R Grimaila, R F Mills
2011 2011 44th Hawaii International Conference on System Sciences  
The comparison measures the value in distributed event correlation by considering network bandwidth utilization, detection capability and database query efficiency.  ...  This research presents a distributed event correlation system which performs security event detection, and evaluates it experimentally, compared with a centralized alternative.  ...  Mode 4 contains all raw log messages and no synthetic events, to represent data collected without a distributed event correlation system in place.  ... 
doi:10.1109/hicss.2011.288 dblp:conf/hicss/MyersGM11 fatcat:bg6b55bbjnftlnmq557dbvjzp4

Event Broker Grids with Filtering, Aggregation, and Correlation for Wireless Sensor Data [chapter]

Eiko Yoneki
2005 Lecture Notes in Computer Science  
To manage high volume and faulty sensor data, it requires more sophisticated event filtering, aggregation and correlation over time and space in heterogeneous network environments.  ...  At the same time, the subscriber's interest has to be efficiently propagated to event sources.  ...  We provide a global view of event correlation over whole distributed systems from the correlation semantics point.  ... 
doi:10.1007/11575863_50 fatcat:tqvrmsgs7bbkpo5jaww3micoci

Event mixing does not reproduce single-particle acceptance convolutions for nonuniform pseudorapidity distributions

Lingshan Xu, Chin-Hao Chen, Fuqiang Wang
2013 Physical Review C  
The error of the mixed-event method, which guarantees a uniform Δη two-particle combinatorial density, is, however, small in correlation analyses where the two particles are integrated over an extended  ...  distribution is significantly nonuniform.  ...  In the widely used mixed-event acceptance correction, the single-particle distributions are mistaken as detection efficiencies, implying that the true distributions (e.g. the pseudo-rapidity density dN  ... 
doi:10.1103/physrevc.88.064907 fatcat:svoohxnv6nat3iqhsezn3au42m

Towards a Peer-to-Peer Event Broker Grid in a Hybrid Network Environment [chapter]

Eiko Yoneki, Jean Bacon
2004 Lecture Notes in Computer Science  
Peer-to-peer networks and grids offer promising paradigms for developing efficient distributed systems and applications.  ...  In this paper, We propose an ontology-based event model for such systems and events are defined in RDF. The system includes an event correlation service for composite event detection and propagation.  ...  It is important to provide efficient communication to support such event-based systems especially over mixed and hybrid network environments.  ... 
doi:10.1007/978-3-540-30470-8_37 fatcat:gt3gixcq2nglffiuxgzsqthq6e

GSFord: Towards a Reliable Geo-social Notification System

Kyungbaek Kim, Ye Zhao, Nalini Venkatasubramanian
2012 2012 IEEE 31st Symposium on Reliable Distributed Systems  
When an event occurs, GSFord is able to efficiently deliver the message to recipients who are either (a) located in the event area or (b) socially correlated to the event (e.g. relatives/friends of those  ...  We also show that GSFord is efficient even under skewed distribution of user populations.  ...  or socially correlated to the event.  ... 
doi:10.1109/srds.2012.35 dblp:conf/srds/KimZV12 fatcat:4ltgfs4tcvfhldvdcxmhmjqp3u

A Backend Framework for the Efficient Management of Power System Measurements [article]

Ben McCamish, Rich Meier, Jordan Landford, Robert Bass, Eduardo Cotilla-Sanchez, David Chiu
2016 arXiv   pre-print
The event-detection algorithm rapidly correlates multiple PMU data streams, providing details on events occurring within the power system.  ...  This paper describes a PMU data management system that supports input from multiple PMU data streams, features an event-detection algorithm, and provides an efficient method for retrieving archival data  ...  Our PMU data management system has multiple software components that allow a user to build a bitmap index over raw data, and to efficiently query records that match specifications.  ... 
arXiv:1501.04038v2 fatcat:knojfzfwxvdyrntom2a7izolpa

Azimuthal anisotropies in Pb+Pb and p+Pb collisions with the ATLAS detector

Barbara Wosiek
2015 Annals of Physics  
system.  ...  The obtained results are indicative of the importance of final-state effects in small collision systems which may lead to collective flow similar to that observed in the dense and hot system created in  ...  Acknowledgments The author would like to express her sincerest gratitude and warm thanks to Wit Busza for everything she has learned from him over the years of cooperative work on the PHOBOS experiment  ... 
doi:10.1016/j.aop.2014.07.038 fatcat:dlpxaa2fmngodccoa2lztlwoeq

Design and Analysis of a Dynamically Configured Log-based Distributed Security Event Detection Methodology

Michael R Grimaila, Justin Myers, Robert F Mills, Gilbert Peterson, J Todd McDonald, Eric D Trias
2011 The Journal of Defence Modeling and Simulation: Applications, Methodology, Technology  
In this paper, we present a flexible, distributed event correlation system designed to overcome these limitations by distributing the event correlation workload across the network of event producing systems  ...  The results show that when compared to centralized event correlation, dynamically configured distributed event correlation provides increased flexibility, a significant reduction in network traffic in  ...  Second, we want to add synthetic events to the event stream generated by distributed event correlation that would improve the efficiency of the event correlation conducted at the centralized log server  ... 
doi:10.1177/1548512911399303 fatcat:3rpaz5mlubg2tknyobra3otfbu

Continuous query evaluation over distributed sensor networks

Oana Jurca, Sebastian Michel, Alexandre Herrmann, Karl Aberer
2010 2010 IEEE 26th International Conference on Data Engineering (ICDE 2010)  
In this paper 1 we address the problem of processing continuous multi-join queries, over distributed data streams. Our approach makes use of existing work in the field of publish/subscribe systems.  ...  We allow users to subscribe to a set of sensor attributes, a service that requires processing multi-join correlation queries.  ...  over the exact same set of attributes; in fact, all published data in such systems is already correlated.  ... 
doi:10.1109/icde.2010.5447847 dblp:conf/icde/JurcaMHA10 fatcat:rzg7rhtk4rfota5ar6s2lwn6wm

Higher order net-proton number cumulants dependence on the centrality definition and other spurious effects

S Sombun, J Steinheimer, C Herold, A Limphirat, Y Yan, M Bleicher
2017 Journal of Physics G: Nuclear and Particle Physics  
Furthermore we find that the finite efficiency for the determination of the centrality introduces an additional systematic uncertainty.  ...  We study the dependence of the normalized moments of the net-proton multiplicity distributions on the definition of centrality in relativistic nuclear collisions at a beam energy of √(s_NN)= 7.7 GeV.  ...  In our study we can only consider a scenario where the proton efficiency, in an event, is independent of the charged particle efficiency, thus there would be no correlation between events with a large  ... 
doi:10.1088/1361-6471/aa9c6c fatcat:gyrywjrbengfbhkr2arnxwas7u

State-Filters for Enhanced Filtering in Sensor-Based Publish/Subscribe Systems

Salman Taherian, Jean Bacon
2007 2007 International Conference on Mobile Data Management  
Using State-Filters, we claim to achieve higher efficiency by means of filtering redundant and correlated event notifications, suppress event duplicates, and capture lasting conditions that had been previously  ...  Publish/Subscribe systems have been extensively studied in the context of distributed information-based systems, and have proven scalable in information-dissemination for many distributed applications  ...  The remaining 8 events were those which were disseminated to the ten distributed subscribers within the system.  ... 
doi:10.1109/mdm.2007.73 dblp:conf/mdm/TaherianB07 fatcat:76sgjiey6jc5xjqwqc3po4ul2a

A backend framework for the efficient management of power system measurements

Ben McCamish, Rich Meier, Jordan Landford, Robert B. Bass, David Chiu, Eduardo Cotilla-Sanchez
2016 Electric power systems research  
The eventdetection algorithm rapidly correlates multiple PMU data streams, providing details on events occurring within the power system.  ...  This paper describes a PMU data management system that supports input from multiple PMU data streams, features an event-detection algorithm, and provides an efficient method for retrieving archival data  ...  This data type has a back end that builds a B + -Tree [24] index over it for efficient query processing.  ... 
doi:10.1016/j.epsr.2016.05.003 fatcat:4c7ooscrzvan3hcmixqoa3gkoi

Parallel replica method for dynamics of infrequent events

Arthur F. Voter
1998 Physical Review B (Condensed Matter)  
I present a simple approach for infrequent-event systems that extends the time scale with high parallel efficiency.  ...  Integrating a replica of the system independently on each processor until the first transition occurs gives the correct transition-time distribution, and hence the correct dynamics.  ...  All correlated events ceased within 1.5 ps, and most were over within the first 0.75 ps.  ... 
doi:10.1103/physrevb.57.r13985 fatcat:whbznsec4relxbdzauluibwp5u

Multiple rainfall event pollution transport by sustainable drainage systems: the fate of fine sediment pollution

D. Allen, S. Arthur, H. Haynes, V. Olive
2016 International Journal of Environmental Science and Technology  
system during a design flow event, with research focusing on sand (>2 mm) sediment movement.  ...  Current research defines sustainable urban drainage systems (SuDS) pollutant treatment efficiency through the detention of total suspended solids, urban nutrients and heavy metal pollutants within the  ...  Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://, which permits unrestricted use, distribution  ... 
doi:10.1007/s13762-016-1177-y pmid:32226457 pmcid:PMC7089682 fatcat:ibmqzjeb2jfe3oi3ilhhx3dgni
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