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Qi-Rong Guo

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#artificial intelligence Preprint Sep 2026

Regime Boundary Alignment for Evidence-Gated Question Answering

Retrieval-augmented language models are expected to answer from the retrieved evidence, but in practice they often keep answering when that evidence is missing. We trace this behavior to the training signal: answer-focused fine-tuning assigns no target to unsupported contexts, so it cannot distinguish a reader that abs...

Zeyan Li, Qi-Rong Guo, Si-Yuan Qiu et al. · 0 citations
#machine learning Preprint Sep 2026

New LoRA Skills Should Read but Never Write

Low-rank adapters (LoRA) make it cheap to fine-tune a large language model once per task, but combining several independently trained adapters into one model remains difficult: merging the updates in weight space causes interference, retraining on all task data is expensive, and routing between separate adapters gives...

Zeyan Li, Pan-Qi Yang, Qi-Rong Guo et al. · 0 citations

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