“…Very recently, numerous studies have proposed to assist diagnosis of AD by means of CNNs (Aderghal et al, 2018(Aderghal et al, , 2017a(Aderghal et al, , 2017bBäckström et al, 2018;Basaia et al, 2019;Farooq et al, 2017;Gunawardena et al, 2017;Hon and Khan, 2017;Hosseini Asl et al, 2018;Zhang, 2018, 2017;Korolev et al, 2017;Lian et al, 2018;Li et al, , 2017Lin et al, 2018;Manhua Liu et al, 2018;Mingxia Liu et al, 2018a, 2018cQiu et al, 2018;Senanayake et al, 2018;Shmulev et al, 2018;Taqi et al, 2018;Valliani and Soni, 2017;Vu et al, 2018Vu et al, , 2017Wang et al, 2019Wang et al, , 2017Wu et al, 2018) . However, classification results among these studies are not directly comparable because they differ in terms of: i) sets of participants; ii) image preprocessing procedures, iii) cross-validation (CV) procedure and iv) reported evaluation metrics.…”