Fast uncertainty quantification for dynamic flux balance analysis using non-smooth polynomial chaos expansions
Fig 6
Convergence properties of nsPCE surrogate models.
(a,b) Glucose concentration at time 7 hours. (c,d) Xylose concentration at time 8 hours. (e,f) Biomass concentration at time 8 hours. Left plots show the validation RMSE versus the specified error tolerance. Right plots show the total number of model evaluations based on a sequential ED construction, with a maximum of 1000 samples allowed. The global sparse basis-adaptive PCE results are also shown for comparison purposes.