随笔分类 -  machine learning

8. 机器学习第三周（3）
摘要：Logistic Regression Model 1. Cost Function We cannot use the same cost function that we use for linear regression because the Logistic Function will c 阅读全文
posted @ 2016-12-19 15:22 FlySevenWu 阅读(560) 评论(0) 推荐(0)
7. 机器学习第三周（2）
摘要：Logistic Regression Model 1. Cost Function We cannot use the same cost function that we use for linear regression because the Logistic Function will c 阅读全文
posted @ 2016-12-19 15:21 FlySevenWu 阅读(294) 评论(0) 推荐(0)
6. 机器学习第三周（1）
摘要：Classification and representation 1. Classification To attempt classification, one method is to use linear regression and map all predictions greater 阅读全文
posted @ 2016-12-17 19:56 FlySevenWu 阅读(372) 评论(0) 推荐(0)
5.机器学习第二周（2）
摘要：Computing Parameters Analytically 1 Normal Equation(正规方程) Gradient descent gives one way of minimizing J. Let’s discuss a second wayof doing so, this 阅读全文
posted @ 2016-12-08 21:52 FlySevenWu 阅读(227) 评论(0) 推荐(0)
4. 机器学习第二周（1）
摘要：Multivariate Linear regression 1. Multiple Features Linear regression with multiple variables is also known as "multivariate linear regression". We no 阅读全文
posted @ 2016-12-07 22:20 FlySevenWu 阅读(349) 评论(0) 推荐(0)
3. 机器学习第一周（3）
摘要：Parameter Learning 刚发现这儿的markdown似乎不支持latex公式，是我没正确打开么。。。。 1. Gradient Descent So we have our hypothesis function and we have a way of measuring how w 阅读全文
posted @ 2016-12-01 22:49 FlySevenWu 阅读(236) 评论(0) 推荐(0)
2.机器学习第一周（2）
摘要：Model and Cost Function 1. Model Representation To establish notation for future use, we’ll use x(i) to denote the “input”variables (living area in th 阅读全文
posted @ 2016-11-30 22:25 FlySevenWu 阅读(236) 评论(0) 推荐(0)
1.机器学习第一周（1）
摘要：Machine Learning 1. What is Machine Learning? Two definitions of Machine Learning are offered. Arthur Samuel described it as: "the field of study that 阅读全文
posted @ 2016-11-28 22:58 FlySevenWu 阅读(216) 评论(0) 推荐(0)