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Hua Qu

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Jul 2026

Metadata-Free Meta-Reweighted Direct Preference Optimization under Noisy Preference Labels

A bilevel optimization framework is proposed and it is proved, under some idealized conditions, that this framework can recover the DPO optimum under clean data and derive a prior form for the learnable weighting function under label-flipping noise.

Hua Qu, Yifan Li, Xiaodong Yuan · 0 citations
Conference Jul 2026

Local Graph-Aware Hop-by-Hop Routing for Dynamic LEO Satellite Networks

Low Earth orbit (LEO) satellite networks exhibit rapidly changing topology and time-varying traffic hotspots, which makes hop-by-hop routing highly sensitive to local congestion and state staleness. Existing routing methods either rely on global path computation or use plain local observations, while graph-enhanced app...

Wen-Xiang Zhang, Yiao Gao, Ke-Yan Bai et al. · 0 citations

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