*Thursday, 4 March, 17:00 CET* *Katya Scheinberg**, *Cornell University A Theoretical and Empirical Comparison of Gradient Approximations in Derivative-Free Optimization <http://mailsender.luiss.it/lists/lt.php?id=cRpQAQUDSAUFBgdOVgFdBQs> Discussants: Pavel Dvurechensky and Giuseppe Ughi The paper can be found here <https://arxiv.org/abs/1905.01332>. This is the link to the Virtual Room <http://mailsender.luiss.it/lists/lt.php?id=cRpQAAYBSAUFBQBOVgFdBQs> The schedule of the upcoming seminars can be found here <https://economiaefinanza.luiss.it/en/seminari/prossimi-seminari>. If you want to receive announcements of future seminars, please fill out this form <https://docs.google.com/forms/d/e/1FAIpQLSeDxM-M5ogG43elgjC-lNCp0BDhISiZHG0HPlNffQl3h3J2Mg/viewform?usp=sf_link> . ******************************************************* Marco Scarsini Dipartimento di Economia e Finanza Luiss Viale Romania 32 00197 Roma, ITALY URL: http://docenti.luiss.it/scarsini/