UMER: Unifying Embedding and Ranking via Pair-Aware Discriminative Reasoning for Universal Multimodal Retrieval
UMER replaces item-wise reflection with Pair-Aware Discriminative Reasoning, which compares query--candidate pairs to identify instruction-relevant matching and discrepancy evidence and achieves state-of-the-art performance under comparable experimental settings while supporting budget-adjustable inference.
Libiao Chen, Xiyang Liu, Yanheng Wei et al.
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