Structural Anchor Pruning: Training-Free Multi-Vector Compression for Visual Document Retrieval
The authors' layer-resolved SR analysis reveals an Alignment-Aggregation Divergence: visual structure is preserved as a stable ``Structural Plateau''within the backbone, while the final layers reshape it into a sparse, query-aligned form unsuitable for pruning.
Zhu Liu, Ziyu Hu, Yao Zhang et al.
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