“…The identification strategies of the Hammerstein system are overall classified into different types on the basis of different perspectives. From the perspective of fundamental identification principle, identification approaches mainly include least squares approach (Cheng et al, 2019;Dong et al, 2020;Nejati and Safarinejadian, 2020), stochastic gradient approach (Ji and Kang, 2020;Pu et al, 2020;Shen et al, 2018), orthogonal matching pursuit approach (Wang et al, 2018(Wang et al, , 2019, and maximum likelihood approach (Li et al, 2017c;Wang et al, 2020). Based on the perspective of identification algorithms used, there exist two categories of identification algorithms, namely, the recursive-based algorithm and the iterative-based algorithm.…”