Congratulations to Edvig Selimaj, who today successfully defended his MSc thesis, by the title of “Non-parametric and symbolic reconstruction of the late-time expansion history” (with the opponent being Prof. Albino Perego), receiving the final grade of 110/110! In his thesis which I supervised together with Miguel Sabogal, Edvig reconstructed the late-time expansion history using Gaussian Processes applied to a range of late-time observations, and then applied symbolic regression to these reconstructions to derive simple, interpretable expressions for the expansion rate and dark energy properties, finding very interesting results, including a physically motivated parametrization which performs substantially better than CPL in fitting DESI data.
Edvig Selimaj joins my group!
Today Edvig Selimaj officially joins my group, and will be carrying out his Master’s thesis under the supervision of myself and Miguel Sabogal. We plan to work on non-parametric reconstructions of the expansion history in light of state-of-the-art cosmological datasets, and then apply a number of machine learning methods to these reconstructions to learn more about dark energy. Welcome Edvig, and I’m looking forward to our work together!