High Precision Audience Expansion via Extreme Classification in a Two-Sided Marketplace. - Dillon Davis; Huiji Gao; Thomas Legrand; Juan Manuel Caicedo Carvajal; Malay Haldar; Kedar Bellare; Moutupsi Paul; Soumyadip Banerjee 003; Liwei He; Stephanie Moyerman; Sanjeev Katariya (CoRR, 2026)