Author

Xiao-Fen Xing

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Preprint Sep 2026

Test-Time Adaptation with Query-Dependent Residuals for Visual Document Retrieval

Visual document retrieval (VDR) systems depend on page embeddings computed before deployment, which makes adaptation difficult when encoder parameters or corpus re-encoding are unavailable. Rerankers provide useful relevance signals, but conventional reranking applies them only to selected queries and candidate pages....

Ze-Liang Li, Xiao-Fen Xing, K. Guo et al. · 0 citations

Preprint Sep 2026

Beyond Similarity through Zero-Token Geometric Graphs for Multi-Hop RAG

Multi-hop retrieval-augmented generation (RAG) requires evidence that remains relevant to a query while introducing enough novelty to bridge semantic gaps. Dense retrieval tends to concentrate on semantically similar documents, whereas graph-based alternatives often depend on costly Large Language Model (LLM) entity ex...

Ze-Liang Li, Xiao-Fen Xing, K. Guo et al. · 0 citations