GitHub - henryxiao1997/Logistic-Regression-cplusplus: implement the logistic regression by cplusplus. The dataset for training and testing are from internet.

henryxiao1997 / Logistic-Regression-cplusplus Public

Notifications You must be signed in to change notification settings
Fork 2
Star 0

implement the logistic regression by cplusplus. The dataset for training and testing are from internet.

Notifications

Name		Name	Last commit message	Last commit date
Latest commit History 2 Commits
Data		Data
LROne		LROne
LRThree		LRThree
LRTwo		LRTwo
readme.txt		readme.txt

Repository files navigation

1. Data：存放训练数据和测试数据的目录

2. LROne：第一个logistic regression实现，实现的二分类分类器，要求输入特征必须为0-1向量，输出为0-1值

3. LRTwo：第二个logistic regression实现，实现的二分类分类器，要求输入特征必须为归一化的实数值，归一化范围[-1, 1]或者[0, 1]都OK，但不能太大，否则sigmoid函数计算在有限精度内会取值为0.0或者1.0，导致cost function的值为无穷大。

4. LRThree：第三个logistic regression实现，实现多分类分类器，输入特征是归一化的实数值。并没有采用one vs all或者one vs other来构建多个分类器，而是在一个LR分类器中，训练多个参数向量，来支持多分类能力。