摘要：
本章主要介绍几种可替代普通最小二乘拟合的其他一些方法。 Why might we want to use another fitting procedure instead of least squares? better prediction accuracy（预测精度） and better m 阅读全文
摘要：
Resampling methods are an indispensable tool in modern statistics. In this chapter, we discuss two of the most commonly used resampling methods, cross 阅读全文
摘要：
1 Statistical Learning 1.1 What Is Statistical Learning? More generally, suppose that we observe a quantitative response Y and p different predictors, 阅读全文