Su J, Nan Z, Ma Y, Xia X, Feng X, Liu W, et al. Potent but Stealthy: Rethink Profile Pollution Against Sequential Recommendation via Bi-Level Constrained Reinforcement Paradigm. AAAI [Internet]. 2026 Mar. 14 [cited 2026 May 14];40(18):15752-60. Available from: https://ojs.aaai.org/index.php/AAAI/article/view/38606