1. Poole D, Mackworth A, Goebel R. Computational intelligence: a logical approach. New York: Oxford University Press; 1998; ISBN 978-0-19-510270-3. Archived from the original on 26 July 2020. Retrieved 22 August 2020.
2. Mitchell T. Machine learning. New York: McGraw Hill; 1997; ISBN 0-07-042807-7. OCLC 36417892.
3. Alpaydin E. Introduction to machine learning. 4th ed. Cambridge, MA: MIT; 2020. p. xix, 1–3, 13–18. ISBN 978-0262043793.
4. James G. An introduction to statistical learning: with applications in R. New York: Springer; 2013. p. 176; ISBN 978-1461471370.
5. Brownlee J. What is the difference between test and validation datasets? 2017. Accessed 12 Oct 2017.