“…There are plenty of other variations of WENO schemes which we are not going to review here. One major strategy to build compact high-order schemes is increasing the internal DOF, such as the discontinuous Galerkin (DG) scheme [35,36,37,38,39], the compact least-squares finite-volume (CLSFV) scheme [40,41,42], the high-order CESE scheme [43,44,45], the spectral volume (SV) scheme [46,47,48], the spectral difference (SD) scheme [49,50]. The DG, CLSFV and CESE schemes increase the internal DOF by increasing the degree of the polynomial, while SV and SD schemes increase the internal DOF by increasing the number of sub-cells and sub-points respectively.…”