Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1228034 | Microchemical Journal | 2011 | 6 Pages |
Abstract
This study presents an analytical method for determining interfacial tension and relative density in insulating oils using near infrared spectrometry (NIR). Five different strategies of regression were evaluated: partial least squares (PLS) with significant regression coefficients selected by jack-knife algorithm; interval PLS (iPLS); multiple linear regression (MLR) with variable selection by genetic algorithm (MLR/GA), successive projections algorithm (MLR/SPA) and stepwise strategy (SR/MLR). The overall results point to MLR/SPA as the best modeling strategy. The strategy is simpler and uses fewer spectral variables.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Márcio José Coelho Pontes, Alexandre Magno José Rocha, Maria Fernanda Pimentel, Claudete Fernandes Pereira,