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cs.IR2026
Joint Optimization of Relevance and Engagement in Multi-Task Ranking for E-Commerce with Efficient LLM Supervision
Luming Chen, Jiaqi Xi, Raghav Saboo +7
Optimizing industrial search ranking models solely for user engagement signals often introduces systematic biases, prioritizing popular or price-anchored items that may not satisfy…
cs.IR2026
Mine and Refine: Optimizing Graded Relevance in E-commerce Semantic Search Retrieval
Jiaqi Xi, Raghav Saboo, Luming Chen +8
Embedding-based retrieval (EBR) for large-scale e-commerce search faces three intertwined challenges: graded (non-binary) relevance where engagement signals are noisy and intent-va…