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Shaowen Wang

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#natural language process... Preprint Oct 2026

WavePrune: One period is often enough for RoPE

Rotary Position Embedding (RoPE) encodes token positions by rotating each two-dimensional channel of the query and key vectors at a channel-specific frequency, making the attention logits invariant to a common shift of positions. However, this rotation is periodic, and it leads to position aliasing where relative posit...

Guan-Cheng Du, Luo-Tian Huang, Shaowen Wang et al. · 0 citations

When Bias Pretends to Be Truth: How Spurious Correlations Undermine Hallucination Detection in LLMs

It is shown that existing hallucination detection methods, such as confidence-based filtering and inner-state probing, fundamentally fail in the presence of spurious correlations, and further elucidates why these statistical biases intrinsically undermine confidence-based detection techniques.

Shaowen Wang, Yi-Qi Dong, Rui‑Ying Chang et al. · 3 citations

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