Author

Dongfang Zhao

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Preprint Sep 2026

RidgeRank: Efficient Visual Document Reranking via Score Fusion and a Shallow Linear Readout

Multimodal language models rerank visual document retrieval results accurately, but scoring every candidate page at full cost makes them slow. Some methods that compress these rerankers need relevance labels to regain accuracy, and they rank by the reranker score alone. RidgeRank measures how much relevance signal the...

Shu-Bing Yang, Dongfang Zhao · 0 citations

Preprint Sep 2026

PixCrypt: Fast Fine-Grained FHE with Range-Aware Caching

Many analytics tasks require secure computation over encrypted data. In particular, fine-grained data such as pixel-level images require higher precision, as every pixel can directly affect outcomes in tasks like tumor segmentation and anomaly detection. While Multi-Party Computation (MPC) is interactive, Differential...

Chao Wang, Shu-Bing Yang, Xiao-Yan Sun et al. · 0 citations

Preprint Aug 2026

AdaWidth: Query-Adaptive Embedding Width for Dense Retrieval

High-dimensional embeddings are central to dense retrieval, but not all of these dimensions need to be evaluated at retrieval time. Existing methods reduce dimensions in two ways: truncating the same leading dimensions for every query, or masking a different subset for each query while still storing and accessing the f...

Shu-Bing Yang, Dongfang Zhao · 0 citations