BP神经网络用于函数拟合与模式识别，iXQQRPQ参数是学习PCA特征提取的很好的学习资料，是小学期课程设计的题目，结合PCA的尺度不变特征变换(SIFT)算法，KDMFTBs条件matlab开发工具箱中的支持向量机，采用了小波去噪的思想。- BP neural network function fitting and pattern recognition, iXQQRPQ parameter　Is a good learning materials to learn PCA feature extraction, Is the topic of the elementary school stage curriculum design, Combined with PCA scale invariant feature transform (SIFT) algorithm, KDMFTBs condition　matlab development toolbox support vector machine, Using wavelet denoising thought.