Fig. 7From: Soft - sensing modeling based on ABC - MLSSVM inversion for marine low - temperature alkaline protease MP fermentation processThe relative error curve of ABC-MLSSVM inversion soft-sensing modeling is described by a red solid line with *, the relative error curve of MLSSVM soft-sensing modeling is described by a blue solid line with ◊. (a) is the relative error curve of biomass concentration. (b) is the relative error curve of substrate concentration. (c) is the relative error curve of relative enzyme activityBack to article page