Kátia Cordélia Cunha Cordeiro, Nadirlene Pereira Gomes, Luana Moura Campos, Jéssica Damasceno de Santana, Rosana Santos Mota, Climene Laura de Camargo
Expressions of domestic violence against adolescents: Educators' speeches
Revista brasileira de enfermagem
evaluate quality moyao myrrh identification geographical origin processing products raw moyao myrrh two kinds moyao myrrh processed vinegar three countries identified using nearinfrared nir spectroscopy combined chemometric techniques principal component analysis pca used reduce dimensionality data visualize clustering samples different categories classical chemometric algorithm plsda two machine learning algorithms knearest neighbor knn support vector machine used conduct classification analysis nearinfrared spectra moyao myrrh samples discriminative performance evaluated based accuracy precision recall rate f1 value model results showed classical chemometric algorithm machine learning algorithm obtained positive results chemometric analyses nir spectrum moyao myrrh preprocessed standard normal variation multivariate scattering correction combined knn achieved highest accuracy identifying geographical origins accuracy identifying processing technology established knn method firstorder derivative pretreatment best best accuracy geographical origin discrimination processing technology discrimination 09853 09706 respectively nir spectroscopy combined chemometric technology important tool tracking origin processing technology moyao myrrh also provide reference evaluations quality clinical use