Macro seminar Time : 12h15 - 13h30 Date : 16th  January 2026 Salle 3001 Yiqi LIU (Cornell University ) "Synthetic Parallel Trends" Abstract: Popular empirical strategies for policy evaluation in the panel data literature—including difference-in-differences (DID), synthetic control (SC) methods, and their variants—rely on key identifying assumptions that can be expressed through a specific choice […]