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Ke-Zhen Chen

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#machine learning Preprint Sep 2026

Storage Is Not Strategy: State-Conditioned Support Control for LLM Unlearning

Many localized large language model (LLM) unlearning methods select a small parameter subset from a localization signal and keep it fixed during optimization. The parameters most associated with a target, however, need not be the best ones to update, and candidate interventions can change value as optimization proceeds...

Tian-Hao Qian, Zi-Ming Hong, Chong-Yang Gao et al. · 0 citations
Preprint Aug 2026

Equitable System-Prompt Selection via Constrained Mixed-Strategy GroupDRO

A constrained mixed-strategy GroupDRO framework for system-prompt selection that reduces the Overall Mean, Worst 25% Mean, and Worst by 13.7% on average relative to no mitigation while keeping overall quality close to Average selection.

Mengyu Xu, Qiaoxin Yang, Zhihan Liu et al. · 0 citations
#artificial intelligence Preprint Aug 2026

FM-Bench: A Benchmark for Long-Horizon Management with Competing Agents

Language model agents now execute bounded tasks reliably. Whether they can sustain effective decision-making over long horizons, where actions have cumulative consequences and the environment responds to their choices, remains largely unmeasured. FM-Bench (Football Management Benchmark) measures this. An LLM agent runs...

Tianyou Wang, Chong-Yang Gao, Ke-Zhen Chen et al. · 1 citation

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