摘要：Q: Why might we want to use another fitting procedure instead of least squares? A: alternative fitting procedures can yield better prediction accuracy 阅读全文

摘要：Resampling methods involve repeatedly drawing samples from a training set and refitting a model of interest on each sample in order to obtain addition 阅读全文

摘要：The linear regression model discussed in Chapter 3 assumes that the response variable Y is quantitative. But in many situations, the response variable 阅读全文