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Dynamic Migration of Processing Elements for Optimized Query Execution in Event-Based Systems
[chapter]
2011
Lecture Notes in Computer Science
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We focus on the case that multiple users run different continuous Complex Event Processing (CEP) queries over various event streams. ...
This paper proposes a method for optimized placement of query processing elements in a distributed stream processing platform consisting of several computing nodes. ...
In our model, a number of aggregator nodes (A) are collectively responsible to execute multiple continuous user queries (Q). ...
doi:10.1007/978-3-642-25106-1_3
fatcat:jmyles34rjae7n4u2b2hnxzlwe
HiFiA Unified Architecture for High Fan-in Systems (System Demonstration)
[chapter]
2004
Proceedings 2004 VLDB Conference
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We demonstrate an initial prototype of HiFi that uses data stream query processing to acquire, filter, and aggregate data from multiple devices including sensor motes, RFID readers, and low power gateways ...
networks and RFID readers and whose interior nodes consist of traditional host computers organized using the principle of successive aggregation. ...
readings across multiple streams and device types and successive levels of aggregation. ...
doi:10.1016/b978-012088469-8/50146-7
fatcat:pzp3wwau3feahcs3ivkpd3cyqi
OPTIMIZED INTENTION FOR CONTINUOUS QUERIES IN THE ACTIVE DATA AGGREGATION NETWORK WITH COST MODEL
2015
International journal of computer and communication technology
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Here the aim is to introduce the low-cost, scalable technique to answer continuous aggregation queries using a network of aggregators of dynamic data items. ...
These queries are referred to as the continuous queries since they continually produce results whenever new data arrives or existing data changes. ...
Although a query can be divided in such a way that a single data item is served by multiple; but in doing so the same data item needs to be processed at multiple aggregators, increasing the unnecessary ...
doi:10.47893/ijcct.2015.1300
fatcat:kughroydure6vnw6sawev24zkm
How to Fit when No One Size Fits
2013
Conference on Innovative Data Systems Research
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We are taking the DBMS + approach in a platform, called Cyclops, that we are building for continuous query execution. ...
It can be hard for an application developer to pick one system when the needs of her application match the features of multiple "one size" systems. ...
To further show that "no one size fits" for processing continuous queries, we ran windowed aggregation queries with different combinations of characteristics. ...
dblp:conf/cidr/LimHB13
fatcat:o5267avbeffazmnulez26d7ume
Efficient Processing of Queries using Filtered Bitmap Index with Multi-Join Multiple Set Predicates
2019
VOLUME-8 ISSUE-10, AUGUST 2019, REGULAR ISSUE
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If the result exists then only continue the join processing in the rewritten query, by taking the next lower level table from the complex query and do the execution. ...
It will further degrade when the amount of joins in the queries is increased. These problems emphasize a need for good query processing approach. ...
Otherwise, if the result exists then only continue the join processing in the rewritten query, by taking the next lower level table from the complex query and do the execution.
IV. ...
doi:10.35940/ijitee.j1065.08810s19
fatcat:6btu6hfipvc2ddpp2wguhprqdi
Distributed continuous queries over Web service event streams
2011
2011 7th International Conference on Next Generation Web Services Practices
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We present a distributed query platform that tackles these problems. Our novel query model permits to specify inputs that provide data for other inputs and need to be processed first. ...
We evaluate several aspects of our prototype in a Cloud computing environment. ...
The fundamental assumption of WS-Aggregation is therefore that multiple aggregator machines collaboratively process the queries and events requested by the clients. ...
doi:10.1109/nwesp.2011.6088173
fatcat:kajupqkqbrcgpbinwpgdukvuf4
Collaboratively Querying Sensor Networks through Handheld Devices
2007
2007 International Conference on Mobile Data Management
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One of the main features of WinyDB is that multiple PDAs running WinyDB can answer queries collaboratively. This feature is useful in that it improves both the power efficiency and the data quality. ...
Therefore, we propose WinyDB, a relational query processing system on Windows-CE based PDAs (Personal Digital Assistants) for sensor networks. ...
conjunct is less restrictive than one of A's, and (3) if A is a continuous query, its sample period is a multiple of B's. ...
doi:10.1109/mdm.2007.14
dblp:conf/mdm/ChiuL07
fatcat:zx4nfbwa6vftllp2v6ner5gko4
A Study of Approximate Data Management Techniques for Sensor Networks
2006
2006 International Workshop on Intelligent Solutions in Embedded Systems
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A large variety of applications could benefit from the pervasive deployment of inexpensive wireless sensor nodes, ranging from environmental monitoring to emergency detection and response. ...
Recent developments in sensor network technology have enabled the instrumentation of the physical world with smart devices for monitoring purposes. ...
Additional communication savings can be achieved by combining the processing of multiple aggregate queries over a fixed communication tree [6] . ...
doi:10.1109/wises.2006.237157
fatcat:ggs3mikolneerev7et4gextwcu
A Study of Approximate Data Management Techniques for Sensor Networks
2006
2006 International Workshop on Intelligent Solutions in Embedded Systems
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A large variety of applications could benefit from the pervasive deployment of inexpensive wireless sensor nodes, ranging from environmental monitoring to emergency detection and response. ...
Recent developments in sensor network technology have enabled the instrumentation of the physical world with smart devices for monitoring purposes. ...
Additional communication savings can be achieved by combining the processing of multiple aggregate queries over a fixed communication tree [6] . ...
doi:10.1109/wises.2006.329119
dblp:conf/wises/SkordylisTG06
fatcat:ay3klpfembarrguz7oi2ktdysq
Online Aggregation based Approximate Query Processing: A Literature Survey
[article]
2022
arXiv
pre-print
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Online aggregation-based AQP progressively generates approximate results with some error estimates (i.e., confidence interval) until the processing of all data is done. ...
An approximate query process (AQP) was proposed to efficiently compute approximate values as close as to the exact answer. ...
Sample problem happens in case of online aggregation associated with join queries of multiple tables. ...
arXiv:2204.07125v1
fatcat:tdey5uh3szcjhbc3pskwcbf2wa
Information Extraction from Large-scale WSNs: Approaches and Research Issues Part II: Query-Based and Macroprogramming Approaches
2008
Sensors & Transducers
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Part III highlights the open research questions and issues faced by deployable WSN system designers and discusses the potential benefits of both in-network processing and complex querying for large scale ...
This suite of three papers (Part I-III) offers an extensive survey of the literature in the area of WSN information extraction, covering in Part I and Part II the three main approaches above. ...
Although a viable approach for continuous queries it does not address complex queries or even aggregate type queries to any great extent and is more concerned with managing simple query processing over ...
doaj:13c80d1e78db4dffaebddfd20375edbb
fatcat:lb6haxpyknfudasx4uviljdzpm
Real Time Business Performance Monitoring and Analysis Using Metric Network
2006
2006 IEEE International Conference on e-Business Engineering (ICEBE'06)
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A metric network consists of metrics, metric repositories, aggregation agents, and knowledge agents. ...
To do so, performance measures need to be collected from daily operations and aggregated to construct higher-level Key Performance Indicators (KPIs) in nearly real time. ...
Existing techniques from query processing and optimization in data streams and continuous queries readily apply. ...
doi:10.1109/icebe.2006.84
dblp:conf/icebe/HuangLL06
fatcat:fghhoihx2rdi5lawo2cixtlqpa
Bi-Level Online Aggregation on Raw Data
2017
Proceedings of the 29th International Conference on Scientific and Statistical Database Management - SSDBM '17
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The performance of in-situ processing across a query workload is, however, limited by the speed of full scan, tokenizing, and parsing of the entire data. ...
Online aggregation (OLA) has been introduced as an efficient method for data exploration that identifies uninteresting patterns faster by continuously estimating the result of a computation during the ...
Department of Energy Early Career Award (DOE Career). ...
doi:10.1145/3085504.3085514
dblp:conf/ssdbm/ChengZR17
fatcat:c62uqxxufnfnfkykhtm5o7lhqa
Parallel online aggregation in action
2013
Proceedings of the 25th International Conference on Scientific and Statistical Database Management - SSDBM
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Online aggregation provides continuous estimates to the final result of a computation during the actual processing. ...
Demonstration participants are shown how estimates to general SQL aggregation queries over terabytes of TPC-H data are generated during the entire processing. ...
The process is executed level by level starting from the leaves, with the final result computed at the root of the tree. ...
doi:10.1145/2484838.2484874
dblp:conf/ssdbm/QinR13
fatcat:k6j55dowwbe2zmwnuwvwodkhfm
A System Of Operations On Sliding Windows
2006
2006 International Conference on Advanced Computing and Communications
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In this paper, we propose a system of operators to process a continuous query on sliding windows over streaming data. ...
One of the distinguishing characteristics of a data stream system is 'a continuous query operating on dynamic data' as opposed to 'static data processed by instantaneous query' in DBMS. ...
The model consists of three layers of operations required for processing a continuous query. ...
doi:10.1109/adcom.2006.4289961
fatcat:xiakbs5cmrhfdied6cbygdi35m
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