Abstract
In This Work, We Investigated the Possibility to Perform Wavelength Selection by Exploiting the Metric Structure of the Spectrophotoscopic Measurements. the Topologically Preserving Representation of the Data is Performed using the Self-Organizing Map (Som) Where the Inputs' Significance to the Output is Computed with the Measure of Topological Relevance (MTR) on Som. the MTR on Som is a Metric Measuring the Similarity between Local Distance Matrices and We Found that Spectral Inputs with a Topology, Which Is, Close to the Outputs Are Also Associated to the Wavelengths that Chemically Explain the Influence of the Spectra to the Property of Interest. as a Result, We Suggest a Wavelength Selection Strategy based on the MTR on Som, that Is, Interpretable to the Domain Experts and Independent on the Regression Technique Subsequently Used for Estimation. to Support the Presentation, a Full-Scale Application from the Oil Refining Industry is Illustrated on the Problem of Estimating Standard Properties in a Complex Hydrocarbon Product Starting from Spectrophotoscopic Measurements. the Method is Further Validated on the Problem of Octane Number Estimation in Finished Gasolines, under Small Sample Conditions. the Application Led to Accurate, Parsimonious and Understandable Models. Copyright © 2008 John Wiley & Sons, Ltd.
Recommended Citation
F. Corona et al., "Wavelength Selection using the Measure of Topological Relevance on the Self-Organizing Map," Journal of Chemometrics, vol. 22, no. 11 thru 12, pp. 610 - 620, Wiley, Jan 2008.
The definitive version is available at https://doi.org/10.1002/cem.1188
Department(s)
Engineering Management and Systems Engineering
Publication Status
Full Access
Keywords and Phrases
Self-organizing map; Variable selection
International Standard Serial Number (ISSN)
1099-128X; 0886-9383
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Wiley, All rights reserved.
Publication Date
01 Jan 2008
