Drifter: Efficient Online Feature Monitoring for Improved Data Integrity in Large-Scale Recommendation Systems. - Blaz Skrlj; Nir Ki-Tov; Lee Edelist; Natalia Silberstein; Hila Weisman-Zohar; Blaz Mramor; Davorin Kopic; Naama Ziporin (ORSUM@RecSys, 2023)