“…Almost twenty years later, Huang et al [62] ELM has recently attracted the attention from more and more researchers and variants of ELM have been proposed [11,12,21,25,26,33,80,87,92,115,120,123,124,131,138]. ELM and its variants have been applied to various types of applications including bank clients classification [22], sales forecasting in fashion retailing [121,129], sales forecasting in industry retailing [15], bacterial protein subcellular localization prediction [71], protein secondary structure prediction [126], microarray gene expression cancer diagnosis [133], prediction of melting point of organic compounds [6], fault diagnosis on hydraulic tube tester [46], power utility non-technical loss analysis [99], land cover classification [101], terrain modelling [130], plant species identification [132], water treatment process [136], face recognition [96,139], human action recognition [92], image deblurring with filters [127], transmission line protection [86], no-reference image quality assessment [122], reversible watermarking [24], testing correct model specification [17], XML document classification [137] and classificati...…”