A new spectrum estimation method in unevenly sampling space
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| 55847_1.pdf | 441Kb | Adobe PDF | View |
| 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 |
| Date Available | 2010-10-27T08:29:40Z |
| 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 |
Please use this identifier to cite this record: http://hdl.handle.net/10072/24540
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