| Abstract: Extracting the maximum amount of astrophysical and cosmological information remains a challenge in the current and future surveys. These include, for instance, the recently launched NASA’s James Webb Space Telescope (JWST), the Euclid, the Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx), the Nancy Grace Roman Space Telescope (Roman), Square Kilometre Array (SKA), and many more. Due to the unprecedented sensitivity and large field of view, future surveys will enable detecting the majority of high redshift sources (quasars and galaxies at z>10) responsible for reionization on extremely large scales (> Gpc). Hence, a new generation of theoretical models and techniques is required to maximize the scientific return of these future surveys. In this talk, I will briefly discuss the key questions about the nature of reionization and the various different probes. I will also discuss uncertainties in our current theoretical models and the progress that has been made to answering these questions. I will then present some of my own contributions to improve modeling reionization using a combination of the state-of-the-art simulations and machine learning models, and conclude by summarizing my current and future research directions. |