Sondos Jameel Mukhyber,DhahirAbdulhadeAbdulah , Amer D. Majeed (2021) “Effect Z-score Normalization on Accuracy of classification of liver disease”, Turkish Journal of Computer and Mathematics Education (TURCOMAT), 12(14), pp. 658–662. doi: 10.17762/turcomat.v12i14.10331.