Sequential Detection of Transient Changes
This article addresses the transient change detection problem. It is assumed that a change occurs at an unknown (but nonrandom) change-point and the duration of post-change period is finite and known. A latent detection-that is, a detection that occurs after signal disappearance-is considered as a m...
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Published in | Sequential analysis Vol. 31; no. 4; pp. 528 - 547 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Philadelphia
Taylor & Francis Group
01.10.2012
Taylor & Francis Ltd Taylor & Francis |
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Abstract | This article addresses the transient change detection problem. It is assumed that a change occurs at an unknown (but nonrandom) change-point and the duration of post-change period is finite and known. A latent detection-that is, a detection that occurs after signal disappearance-is considered as a missed detection. A new optimality criterion adapted to the detection of transient changes involves the minimization of the worst-case probability of missed detection under constraint on the false alarm rate for a given period. A suboptimal sequential transient change detection algorithm is proposed. It is based on a window-limited cumulative sum (CUSUM) test. An upper bound for the worst-case probability of missed detection and a lower and an upper bound for the false alarm rate are proposed. Based on these bounds, the window-limited CUSUM test is optimized with respect to the proposed criterion. The developed algorithm and theoretical findings are applied to drinking water distribution network monitoring. |
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AbstractList | This article addresses the transient change detection problem. It is assumed that a change occurs at an unknown (but nonrandom) change-point and the duration of post-change period is finite and known. A latent detection-that is, a detection that occurs after signal disappearance-is considered as a missed detection. A new optimality criterion adapted to the detection of transient changes involves the minimization of the worst-case probability of missed detection under constraint on the false alarm rate for a given period. A suboptimal sequential transient change detection algorithm is proposed. It is based on a window-limited cumulative sum (CUSUM) test. An upper bound for the worst-case probability of missed detection and a lower and an upper bound for the false alarm rate are proposed. Based on these bounds, the window-limited CUSUM test is optimized with respect to the proposed criterion. The developed algorithm and theoretical findings are applied to drinking water distribution network monitoring. This article addresses the transient change detection problem. It is assumed that a change occurs at an unknown (but nonrandom) change-point and the duration of post-change period is finite and known. A latent detection -- that is, a detection that occurs after signal disappearance -- is considered as a missed detection. A new optimality criterion adapted to the detection of transient changes involves the minimization of the worst-case probability of missed detection under constraint on the false alarm rate for a given period. A suboptimal sequential transient change detection algorithm is proposed. It is based on a window-limited cumulative sum (CUSUM) test. An upper bound for the worstcase probability of missed detection and a lower and an upper bound for the false alarm rate are proposed. Based on these bounds, the window-limited CUSUM test is optimized with respect to the proposed criterion. The developed algorithm and theoretical findings are applied to drinking water distribution network monitoring. |
Author | Nikiforov, Igor Fillatre, Lionel Guépié, Blaise Kévin |
Author_xml | – sequence: 1 givenname: Blaise Kévin surname: Guépié fullname: Guépié, Blaise Kévin organization: Institut Charles Delaunay, LM2S , Université de technologie de Troyes, UMR STMR-CNRS – sequence: 2 givenname: Lionel surname: Fillatre fullname: Fillatre, Lionel organization: Institut Charles Delaunay, LM2S , Université de technologie de Troyes, UMR STMR-CNRS – sequence: 3 givenname: Igor surname: Nikiforov fullname: Nikiforov, Igor email: nikiforov@utt.fr organization: Institut Charles Delaunay, LM2S , Université de technologie de Troyes, UMR STMR-CNRS |
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SubjectTerms | Algorithms Change detection Computer Science Criteria Decision theory Detection algorithms Drinking water Environmental monitoring Failure detection False alarms Mathematical analysis Monitoring Optimization Probability Signal and Image Processing Signal detection Signaling Statistical analysis Transient signals Upper bounds Water pollution |
Title | Sequential Detection of Transient Changes |
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