The material of each directory is attributed to the following people, ordering is arbitrary
deep_learning: Kevin Webster, Pierre Harvey Richemond, Kai Arulkumaranoptimisation: John Duchivariational_inference: Shakir Mohamedreinforcement_learning: Katja Hofmanngaussian_processes: James Hensmankernels: Lorenzo Rosascomcmc: Michael Betancourtapproximate_bayesian_computation: Sarah Filippispeech_processing: Karen Livescuml_in_comp_biology: Barbara Engelhardtfairness: Timnit Gebruinterpretability: Sanmi Koyejolearning_theory: Samory Kpotufesubmodular: Stefanie Jegelka
Alternatively you can get the biographies here.