用于特征降维，特征融合，相关分析等,结合PCA的尺度不变特征变换(SIFT)算法，可以实现模式识别领域的数据的分类及回归，基于人工神经网络的常用数字信号调制，基于欧几里得距离的聚类分析，有循环检测，周期性检测。- For feature reduction, feature fusion, correlation analysis, Combined with PCA scale invariant feature transform (SIFT) algorithm, You can achieve data classification and regression pattern recognition, The commonly used digital signal modulation based on artificial neural network, Clustering analysis based on Euclidean distance, There are cycle detection, periodic testing.