Author

Chenyu Wu

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#artificial intelligence Preprint Jul 2026

Evidence-Unit Fairness and the Limits of Query-Adaptive Sparse-Dense Fusion in Financial Document Retrieval

If the retrieval unit is larger than the dense encoder's input window, the dense model never sees a large share of the labeled evidence, confounding comparison against a full-text sparse baseline.

Chenyu Wu, Lin You · 1 citation