Towards Fairness in Personalized Ads Using Impression Variance Aware Reinforcement Learning. - Aditya Srinivas Timmaraju; Mehdi Mashayekhi; Mingliang Chen; Qi Zeng; Quintin Fettes; Wesley Cheung; Yihan Xiao; Manojkumar Rangasamy Kannadasan; Pushkar Tripathi; Sean Gahagan; Miranda Bogen; Rob Roudani (KDD, 2023)