Chao-Qun Hou

NextGen: A Multi-Objective Generative Re-ranking Framework for Taobao Recommendation

Reranking is a critical stage in e-commerce recommendation that reorders items to optimize the final list as a whole. Existing generative reranking methods suffer from two limitations: (1) they rely on next-item exposure prediction as supervision, neglecting page-level multi-objective signals such as total clicks or tr...