是机器学习的例程，用于建立主成分分析模型，可以广泛的应用于数据预测及数据分析,脉冲响应的相关分析算法并检验，利用自然梯度算法，在MATLAB中求图像纹理特征，包含优化类的几个简单示例程序。- Machine learning routines, Principal component analysis model for establishing, Can be widely used in data analysis and forecast data, Related impulse response analysis algorithm and inspection, Use of natural gradient algorithm, In the MATLAB image texture feature, Optimization class contains several simple sample programs.