二分类问题采用包括逻辑回归、最小二乘法、感知器算法（按下space不断迭代）、svm线性分类，另外还有高斯分线性分类（待完善），针对平面上两类点进行分类-Second classification using logistic regression, the method of least squares, perception algorithm (Press space iteratively) svm linear classification, in addition to the Ga

采用随机梯度算法，来利用逻辑回归对训练集进行分类-Classify the training set by logistic regression

实现逻辑回归的c++源码，功能完善，封装完好，能直接运行-Code of logistic regression