Journal
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
Volume 172, Issue -, Pages 229-240Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chemolab.2017.11.008
Keywords
Spectroscopy; PLS; Interval variable selection
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Funding
- National Natural Science Foundation of China [11271374]
- Key Laboratory for Mixed and Missing Data Statistics of the Education Department of Guangxi Province [GXMMSL201404]
- Mathematics and Interdisciplinary Sciences Project of Central South University
- Innovation Program of Central South University
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Dimension reduction and variable selection are two types of effective methods that deal with high-dimensional data. In particular, variable selection techniques are of wide-spread use and essentially consist of individual selection methods and interval selection methods. Given the fact that the vibrational' spectra have continuous features of spectral bands, interval selection instead of individual spectral wavelength point selection allows for more stable models and easier interpretation. Numerous methods have been suggested for interval selection recently. Therefore, this paper is devoted to a selective review on interval selection methods with partial least squares (PLS) as the calibration model. We described the algorithms in the five classes: classic methods, penalty based, sampling-based, correlation-based, and projection-based methods. Finally, we compared and discussed the performances of a subset of these methods on three real-world spectroscopic datasets.
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