X射线荧光光谱法结合优化k均值检验墨粉的研究

为了构建一种鉴别打印、复印墨粉的模型，采用X射线荧光光谱法进行理论分析和实验验证，对28个常见品牌的墨粉样品的元素含量进行定量测定，获得了样本各主要元素含量数据。在根据有无特定元素初步分为4组后，使用优化k均值算法进行聚类分析，将样本进一步分为了7组，使用优化的k均值算法进行了聚类分析，将样本进一步分为了7组，并使用矩积相关系数进行了验证。结果表明，组内样本在0.001水平上呈显著相关，分类方法可靠，能够较好区分各样本。该研究为司法实践中打印、复印墨粉的鉴别提供了一种快捷、简便的新思路。

X-ray fluorescence spectrum combined with power k-means to examine toner analysis

In order to construct a model for identifying printing and copying toners, X-ray fluorescence spectroscopy was used for theoretical analysis and experimental verification. The experiment data was obtained through quantitatively analyzing of the element content of 28 common brands toner samples. According to the preliminary grouping based on the presence or absence of specific elements, improved power k-means algorithm was used to perform clustering analysis to divide samples into 7 groups. After the verification by the Pearson coefficient, the result was testified, and the samples were well distinguished. The samples within the group were significantly correlated at the level of 0.001.The experiment provides new ideas which is fast and easy for the identification of printing and copying toners in judicial practice.