RequiSim computes the Variance Weighted Overlap, which is a measure of the bias on the lensing signal from power spectrum modelling bias for any non-linear model. It assumes that the bias on the power spectrum is Gaussian with a covariance described by a user-provided knowledge matrix that describes the covariance in the bias on the power spectrum. The data from the Euclid wide-field survey are included.
https://ui.adsabs.harvard.edu/abs/2018PhRvD..98d3532T and https://ui.adsabs.harvard.edu/abs/2018PhRvD..98b3522T