A powerful method for feature extraction and compression of electronic nose responses

Year: 2005

Authors: Leone A., Distante C., Ancona N., Persaud krishna C., Stella E., Siciliano P.

Autors Affiliation: CNR, Ist. Microelettronica e Microssistemi, CNR Sez. Lecce, I-73100 Lecce, Italy; CNR, Ist. Studi sui Sistemi Intelligenti per l\’Automazione, I-70123 Bari, Italy; UMIST, DIAS, 3DIAS, Manchester M60 1QD, Lancs, England

Abstract: This paper focuses on the problem of data representation for feature selection and extraction of 1D electronic nose signals. While PCA signal representation is a problem dependent method, we propose a novel approach based on frame theory where an over-complete dictionary of functions is considered in order to find the near-optimal representation of any 1D signal considered. Feature selection is accomplished with an iterative methods called matching pursuit which select from the dictionary the functions that reduce the reconstruction error. In this case we can use the representation functions found for feature extraction or for signal compression purposes. Classification results of the selected features is performed with neural approach showing the high discriminatory power of the extracted feature. (c) 2004 Elsevier B.V. All fights reserved.

Journal/Review: SENSORS AND ACTUATORS. B, CHEMICAL (PRINT)

Volume: 105 (2)      Pages from: 378  to: 392

KeyWords: feature extraction; electronic nose; gabor functions; frame theory; matching pursuit
DOI: 10.1016/j.snb.2004.06.026

Citations: 18
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