“…These algorithms include artificial neural network (ANN), artificial immune system (AIS), case-based reasoning (CBR), classification and regression tree (CART), C4.5 and C5.0 decision trees, fuzzy logic (FL), rule-based reasoning (RBR) and support vector machines (SVMs) [1]. ANNs have been used by Hamamoto et al (1995) to predict early prognosis of hepatectomised patient with hepatocellular carcinoma [6], by Hayashi et al (2000) to diagnose hepatobiliary disorders [7], by Ozyilmaz and Yildirim (2003) to diagnose hepatitis disease [8], by Lee et al (2005) to classify liver cyst, hepatoma and cavernous haemangioma [9], by Yahagi (2005) to diagnose types of cirrhosis [10], by Azaid et al (2006) to classify fatty liver, liver cirrhosis and liver cancer [11], by Revett et al (2006) to perform mining of primary biliary cirrhosis [12] Babu and Suresh (2013) to classify liver disorder as sick and healthy [14][15][16][17], by Dong et al (2008) to calculate optimal value of cost parameter in order to minimize classification error [18], by Rouhani and Haghighi (2009), Ansari et al (2011) and Sartakhti et al (2015) to diagnose hepatitis disease [19][20][21], by Uttreshwar and Ghatol (2009) to specifically diagnose hepatitis B [22], by Bucak and Baki (2010) to classify liver disorders as hepatitis B, hepatitis C and cirrhosis [2], by Hashem et al (2010) to predict hepatic fibrosis extent in patients with HCV [23], by Revesz and Triplet (2010) to diagnosis primary biliary cirrhosis …”