title: A new spectral variable selection pattern using competitive adaptive reweighted sampling combined with successive projections algorithm.
abstract: The competitive adaptive reweighted sampling-successive projections algorithm (CARS-SPA) method was proposed as a novel variable selection approach to process multivariate calibration. The CARS was first used to select informative variables, and then SPA to refine the variables with minimum redundant information. The proposed method was applied to near-infrared (NIR) reflectance data of nicotine in tobacco lamina and NIR transmission data of active ingredient in pesticide formulation. As a result, fewer but more informative variables were selected by CARS-SPA than by direct CARS. In the system of pesticide formulation, a multiple linear regression (MLR) model using variables selected by CARS-SPA provided a better prediction than the full-range partial least-squares (PLS) model, successive projections algorithm (SPA) model and uninformative variables elimination-successive projections algorithm (UVE-SPA) processed model. The variable subsets selected by CARS-SPA included the spectral ranges with sufficient chemical information, whereas the uninformative variables were hardly selected.
authors: College of Science, China Agricultural University, Beijing 100193, P.R. China. minsg@263.net orange07@126.com.
authors: Guo
authors: G
authors: Tang
authors: Yue
authors: Y
authors: Huang
authors: Kuangda
authors: K
authors: Tian
authors: Xiangzhong
authors: X
authors: Song
authors: Hong
authors: H
authors: Yan
authors: Jing
authors: J
authors: Hu
authors: Yanmei
authors: Y
authors: Xiong
authors: Shungeng
authors: S
authors: Min
mesh_terms: D000465:Algorithms; D016018:Least-Squares Analysis; D016014:Linear Models; D008962:Models, Theoretical; D009010:Monte Carlo Method; D009538:Nicotine / Q000032:analysis; D010575:Pesticides / Q000032:analysis; D019265:Spectroscopy, Near-Infrared; D014026:Nicotiana / Q000737:chemistry / Q000378:metabolism
chemical_list: D010575:Pesticides; D009538:Nicotine