Some cautionary notes on the use of principal components regression

@article{Hadi1998SomeCN,
  title={Some cautionary notes on the use of principal components regression},
  author={Ali S. Hadi and Robert F. Ling},
  journal={The American Statistician},
  year={1998},
  volume={52},
  pages={15-19}
}
Abstract Many textbooks on regression analysis include the methodology of principal components regression (PCR) as a way of treating multicollinearity problems. Although we have not encountered any strong justification of the methodology, we have encountered, through carrying out the methodology in well-known data sets with severe multicollinearity, serious actual and potential pitfalls in the methodology. We address these pitfalls as cautionary notes, numerical examples that use well-known… 
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