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Shaowen Wang

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#artificial intelligence Preprint Oct 2026

MemComposer: Learning to Assemble Memories for LLM Agents via Reinforcement Learning

Agent memory enables large language model (LLM) agents to reuse past experiences without updating their parameters. However, semantic similarity alone does not guarantee memory usefulness: downstream performance depends on how memories are selected and presented to the agent. We propose MemComposer, a memory composer t...

Yi-Xuan Xie, Xue-Qiang Xu, Xin-Yi Fan et al. · 0 citations
#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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