文档介绍：Delaunay Triangulation Method for Analysis of Near-
Infrared Spectra of Plant Samples
Yankun Li
College of Environmental Science and Engineering,
North China Electric Power University,
Baoding, 071003, P. R. China
Lyk800@
Abstract—Delaunay triangulation (DT) has been applied in is one type of local methods, which acquire calibration samples
analytical chemistry as a local multivariate calibration method whose property, . concentration, is close to the predicting
for analysis of near-infrared (NIR) data. The method performs sample by topological technology and predict the sample
feature extraction from the spectra of calibration samples by directly with the acquired calibration samples without the need
using ponent analysis (PCA) at first, forming a of constructing a calibration model [14]. DT method is one of
mesh of simplexes, and then carries out a prediction based on the the most popular topological methods, which originates from
position of the unknown sample in the ponent (PC) the study of structures putational geometry. It has been
space. In this study, for improving the prediction accuracy, widely used in many fields such as examinations of materials,
concentration information was considered in the formation of the statistics, solid state physics, computational geometry and so
simplex meshes, ., the meshes were construc