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Si-Jia Liu

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#machine learning Preprint Sep 2026

Test-Time Unlearning via Sparse Autoencoder

Machine unlearning aims to remove specific knowledge from a trained large language model (LLM) without retraining from scratch. Existing methods modify model weights via gradient ascent and its advances. While effective on certain benchmarks, these weight-based approaches exhibit a sharp forget-utility trade-off, where...

Pingzhi Li, Jinhao Duan, Vaishnav Tadiparthi et al. · 0 citations
#machine learning Preprint Sep 2026

When Retain Constraints Conflict: Mitigating Forget-Retain Interference in Tabular Data

Machine unlearning aims to remove the influence of designated training data while preserving model utility, but its behavior on tabular data remains underexplored. This gap is important because tabular prediction is widely used in high-stakes domains and is increasingly adapted to language models through record seriali...

Zijie Liu, Jinhao Duan, Bing-Qi Shang et al. · 0 citations

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