光学精密工程2024，Vol.32Issue(20)：3006-3016,11.DOI:10.37188/OPE.20243220.3006
太赫兹融合光谱结合改进Fused Lasso模型在转基因菜籽油鉴别中的应用
Application of terahertz fusion spectrum combined with improved fused lasso model in identification of transgenic rapeseed oil
摘要
Abstract
Existing classification and identification models for transgenic rapeseed oil based on single-spec-trum analysis suffer from limited information and high data dimensionality,leading to low operational effi-ciency and inaccurate detection results.To address these issues,a novel classification method for transgen-ic rapeseed oil was proposed,leveraging terahertz fusion spectroscopy combined with an improved Fused Lasso model.Using two types of transgenic rapeseed oil and two types of non-transgenic rapeseed oil as research subjects,the terahertz time-domain spectroscopy(THz-TDS)system was employed to obtain the terahertz absorption spectra of the four rapeseed oil samples in the frequency range of 0.2 to 1.6 THz.Features were extracted from the absorption and derivative spectra using the successive projections algo-rithm(SPA),and then fused.Introducing a regularization sparse model,Fused Lasso,which integrates feature selection and classification.This model was improved into a multi-class model using the one-vs-one(OVO)method,and Bayesian optimization(BO)was employed to optimize its regularization parame-ters.The results demonstrated that the BO-Fused Lasso model,based on fusion spectra,significantly out-performed the traditional Fused Lasso model based on a single absorption spectrum in classifying the four types of rapeseed oil.The accuracy rates for the training and testing sets were 96.88%and 95.00%,re-spectively.This study,therefore,presents a novel approach for accurately identifying transgenic and non-transgenic rapeseed oils and provides a valuable reference for the detection of other transgenic substances.关键词
太赫兹/转基因菜籽油/融合光谱/正则化稀疏模型/贝叶斯优化Key words
terahertz/transgenic rapeseed oil/fusion spectrum/regularized sparse model/Bayesian opti-mization分类
物理学引用本文复制引用
陈涛,谢光翀,张绍荣..太赫兹融合光谱结合改进Fused Lasso模型在转基因菜籽油鉴别中的应用[J].光学精密工程,2024,32(20):3006-3016,11.基金项目
国家自然科学基金资助项目(No.62261012,No.61841502) （No.62261012,No.61841502）
