Code and Results for Chapter 10

• chap_1_prob_1.R (correlated features make feature selection more difficult)
  
• chap_1_prob_2.R (backwards elimination (BE) and forward selection (FS))
  
• chap_1_prob_3.R (backwards elimination (BE) on the highway data)
  
• chap_1_prob_4.R (optimal subset selection for HT18 as a function of younger measurements)
  
• chap_1_prob_5.R (subset selection of the predictors of O2UP)
  
• chap_1_prob_7.R (feature selection on the Galapagos Island)