SymDALI is a Mathematica implementation of the DALI algorithm (Derivative Approximation for LIkelihoods), utilizing symbolic differentiation. It is actively being developed for applications in gravitational waves.

Below is a comparison between the corner plot of the DALI approximation at order 8 (Black) and the exact Likelihood (Red) for the w₀-wₐ parametrization of dark energy in a mock cosmology catalog. A sequence of marginalizations of DALI, from order 1 to 9, is also shown. Additional figures can be found here.