An In-Network Tracking-Based Approach for Continuous K-Nearest Neighbor Query in Wireless Sensor Networks
碩士 === 國立成功大學 === 資訊工程學系碩博士班 === 95 === Continuous k-nearest neighbor (CKNN) search for moving objects is an important function in the applications of spatial databases and location based services (LBS). Many query processing approaches have been proposed in tradition environments. However, the CKNN...
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ndltd-TW-095NCKU53920952016-05-20T04:17:26Z http://ndltd.ncl.edu.tw/handle/86545776785696304776 An In-Network Tracking-Based Approach for Continuous K-Nearest Neighbor Query in Wireless Sensor Networks 在無線感測器網路中處理連續最近K個鄰居查詢的網路內追蹤導向方法 Yung-Chiao Tseng 曾詠喬 碩士 國立成功大學 資訊工程學系碩博士班 95 Continuous k-nearest neighbor (CKNN) search for moving objects is an important function in the applications of spatial databases and location based services (LBS). Many query processing approaches have been proposed in tradition environments. However, the CKNN query is still not addressed efficiently in wireless sensor environments. The challenges of addressing this issue in wireless sensor networks mainly come from fact that communication among sensors for continuous gathering and reporting object locations is highly expensive. In this paper, we propose a tracking-based distributed monitoring (TDM) approach for efficiently processing CKNN queries in wireless sensor networks. TDM establishes an answer space to determine the current KNN and monitor their movement continuously, so that the query answer at each time unit can be obtained with few communications. In addition, we also consider that different applications require different order precision of KNN, thus we extend TDM to address CKNN queries with various order precision. Finally, we conduct a comprehensive set of experiments to reveal that the proposed approach outperforms other existing methods. Chiang Lee 李強 2007 學位論文 ; thesis 90 en_US |
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碩士 === 國立成功大學 === 資訊工程學系碩博士班 === 95 === Continuous k-nearest neighbor (CKNN) search for moving objects is an important function in the applications of spatial databases and location based services (LBS). Many query processing approaches have been proposed in tradition environments. However, the CKNN query is still not addressed efficiently in wireless sensor environments. The challenges of addressing this issue in wireless sensor networks mainly come from fact that communication among sensors for continuous gathering and reporting object locations is highly expensive. In this paper, we propose a tracking-based distributed monitoring (TDM) approach for efficiently processing CKNN queries in wireless sensor networks. TDM establishes an answer space to determine the current KNN and monitor their movement continuously, so that the query answer at each time unit can be obtained with few communications. In addition, we also consider that different applications require different order precision of KNN, thus we extend TDM to address CKNN queries with various order precision. Finally, we conduct a comprehensive set of experiments to reveal that the proposed approach outperforms other existing methods.
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Chiang Lee |
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Chiang Lee Yung-Chiao Tseng 曾詠喬 |
author |
Yung-Chiao Tseng 曾詠喬 |
spellingShingle |
Yung-Chiao Tseng 曾詠喬 An In-Network Tracking-Based Approach for Continuous K-Nearest Neighbor Query in Wireless Sensor Networks |
author_sort |
Yung-Chiao Tseng |
title |
An In-Network Tracking-Based Approach for Continuous K-Nearest Neighbor Query in Wireless Sensor Networks |
title_short |
An In-Network Tracking-Based Approach for Continuous K-Nearest Neighbor Query in Wireless Sensor Networks |
title_full |
An In-Network Tracking-Based Approach for Continuous K-Nearest Neighbor Query in Wireless Sensor Networks |
title_fullStr |
An In-Network Tracking-Based Approach for Continuous K-Nearest Neighbor Query in Wireless Sensor Networks |
title_full_unstemmed |
An In-Network Tracking-Based Approach for Continuous K-Nearest Neighbor Query in Wireless Sensor Networks |
title_sort |
in-network tracking-based approach for continuous k-nearest neighbor query in wireless sensor networks |
publishDate |
2007 |
url |
http://ndltd.ncl.edu.tw/handle/86545776785696304776 |
work_keys_str_mv |
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