sparse-dense representation

Baidu Geek Talk

Apr 7, 2025 · Artificial Intelligence

COBRA: Unified Generative Recommendations with Cascaded Sparse-Dense Representations

COBRA, Baidu’s new generative retrieval framework, unifies sparse ID generation and dense vector encoding through a cascaded architecture that first predicts hierarchical IDs then refines them into dense representations, achieving state‑of‑the‑art recall, NDCG and conversion gains across public benchmarks and large‑scale advertising production.