本压缩文件包括：求矩阵特征根、求奇异值、QR分解矩阵转置-Seeking the root of the matrix eigenvalue problem

集合经验模态分解主要用于信号分解与降噪，为后期信号特征提取提供理论基础-The set of EMD is mainly used for signal decomposition and denoising, which provides a theoretical basis for signal feature extraction.