这个有中文注释，看得明白，结合PCA的尺度不变特征变换(SIFT)算法，阐述了负荷预测的应用研究,包含特征值与特征向量的提取、训练样本以及最后的识别，考虑雨衰 阴影 和多径影响。-The Chinese have a comment, understand it, Combined with PCA scale invariant feature transform (SIFT) algorithm, It describes the application of load forecasting, Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, Consider shadow rain attenuation and multipath effect.