A new validation criterion for guiding the selection of variables by the successive projections algorithm in classification problems

Journal of the Brazilian Chemical Society

Soares, Sófacles F. C.¹  Araújo, Mário C. U.¹  Galvão, Roberto K. H.¹  Pontes, Márcio J. C.¹  Instituto Tecnológico de Aeronáutica, São José dos Campos, Brazil¹  Universidade Federal da Paraíba, João Pessoa, Brazil¹ 

关键词: variable selection;    successive projections algorithm;    classification;    model validation;   

DOI  :  10.5935/0103-5053.20130262

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

A simplification in SPA-LDA is proposed to circumvent the need for separate training and validation sets. The number of degrees of freedom is employed in the cost function to avoid model overfitting. Three examples are presented: classification of coffee, diesel and vegetable oils by using UV-Vis spectrometry, NIR spectrometry and voltammetry, respectively.

【 授权许可】

Unknown