A new spectrum estimation method in unevenly sampling space

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Title A new spectrum estimation method in unevenly sampling space
Author Xian, Jun; Wu, Shuan-Hu; Liew, Alan Wee-Chung; Smith, David; Yan, Hong
Publication Title Proceedings of the Fifth International Conference on Machine Learning and Cybernetics,
Editor N/A
Year Published 2006
Place of publication Piscataway, USA
Publisher IEEE
Abstract Spectrum estimation is a popular method for identifying periodically expressed genes in microarray time series analysis. For unevenly sampled data, a common technique is applying the Lomb-Scargle algorithm. The performance of this method suffers from the effect of noise in the data. In this paper, we propose a new spectrum estimation algorithm for unevenly sampled data. The new method is based on signal reconstructing technic in aliased shift-invariant signal spaces and a direct spectrum estimation formula was derived based on B-spline basis. The new algorithm is very flexible and can reduce the effect of noise by adjusting the order of B-spline basis. The test on simulated noisy signal and typical periodically expressed gene data shows our algorithm is accurate compared with Lomb-Scargle algorithm
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1109/ICMLC.2006.259011
Copyright Statement Copyright 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Conference name Fifth International Conference on Machine Learning and Cybernetics,
Location Dalian
Date From 2006-08-13
Date To 2006-08-16
URI http://hdl.handle.net/10072/24540
Date Accessioned 2009-06-22
Language en_AU
Research Centre Institute for Integrated and Intelligent Systems
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Signal Processing
Publication Type Conference Publications (Full Written Paper - Refereed)
Publication Type Code e1x

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