Integrated wavelet principal component mapping for unsupervised clustering on near infra-red spectra
Donald, David, Everingham, Yvette, and Coomans, Danny (2005) Integrated wavelet principal component mapping for unsupervised clustering on near infra-red spectra. Chemometrics and Intelligent Laboratory Systems, 77 (1-2). pp. 32-42.
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We introduce a new method of unsupervised cluster exploration and visualization for spectral datasets by integrating the wavelet transform, principal components and Gaussian mixture models. The Bayesian Information Criterion (BIC) and classification uncertainty performance criteria are used to guide an automated search of commonly available wavelets and adaptive wavelets. We demonstrate the effectiveness of the proposed method in elucidating and visualizing unsupervised clusters from near infrared (NIR) spectral datasets. The results show that informative feature extraction can be achieved through both commonly available wavelet bases and adaptive wavelets. However, the features from the adaptive wavelets are more favorable in conjunction with unsupervised Gaussian mixture models through a user specified internal linkage function.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||adaptive wavelets; NIR spectra; clustering|
|FoR Codes:||03 CHEMICAL SCIENCES > 0301 Analytical Chemistry > 030106 Quality Assurance, Chemometrics, Traceability and Metrological Chemistry @ 50%|
01 MATHEMATICAL SCIENCES > 0104 Statistics > 010401 Applied Statistics @ 50%
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970101 Expanding Knowledge in the Mathematical Sciences @ 100%|
|Deposited On:||25 Oct 2006|
|Last Modified:||18 Oct 2013 00:20|
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