DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Chun-Hee | ko |
dc.contributor.author | Chung, Chin-Wan | ko |
dc.contributor.author | Chun, Seok-Ju | ko |
dc.date.accessioned | 2013-03-09T14:23:51Z | - |
dc.date.available | 2013-03-09T14:23:51Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2010-12 | - |
dc.identifier.citation | JOURNAL OF SYSTEMS AND SOFTWARE, v.83, no.12, pp.2627 - 2641 | - |
dc.identifier.issn | 0164-1212 | - |
dc.identifier.uri | http://hdl.handle.net/10203/96592 | - |
dc.description.abstract | Aggregate queries are one of the most important queries in sensor networks. Especially, group-by aggregate queries can be used in various sensor network applications such as tracking, monitoring, and event detection. However, most research has focused on aggregate queries without a group-by clause. In this paper, we propose a framework, called the G-Framework, to effectively process continuous group-by aggregate queries in the environment where sensors are grouped by the geographical location. In the G-Framework, we can perform energy effective data aggregate processing and dissemination using two-dimensional Haar wavelets. Also, to process continuous group-by aggregate queries with a HAVING clause, we divide data collection into two phases. We send only non-filtered data in the first collection phase, and send data requested by the leader node in the second collection phase. Experimental results show that the G-Framework can process continuous group-by aggregate queries effectively in terms of energy consumption. (C) 2010 Elsevier Inc. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE INC | - |
dc.title | Effective processing of continuous group-by aggregate queries in sensor networks | - |
dc.type | Article | - |
dc.identifier.wosid | 000284674200022 | - |
dc.identifier.scopusid | 2-s2.0-78049327790 | - |
dc.type.rims | ART | - |
dc.citation.volume | 83 | - |
dc.citation.issue | 12 | - |
dc.citation.beginningpage | 2627 | - |
dc.citation.endingpage | 2641 | - |
dc.citation.publicationname | JOURNAL OF SYSTEMS AND SOFTWARE | - |
dc.identifier.doi | 10.1016/j.jss.2010.08.049 | - |
dc.contributor.localauthor | Chung, Chin-Wan | - |
dc.contributor.nonIdAuthor | Chun, Seok-Ju | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Sensor network | - |
dc.subject.keywordAuthor | Group-by aggregate query | - |
dc.subject.keywordAuthor | Haar wavelet | - |
dc.subject.keywordAuthor | Two-phase collection | - |
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