Kai Zhou
2 indexed papers
Recent (6 mo)
2With code
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226
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AI×2ML×1Crypto×1
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Research Timeline
2026
Toward Polymorphic Backdoor against Semantic Communication via Intensity-Based Poisoning
The paper proposes SemBugger, a polymorphic backdoor attack that uses intensity-based poisoning to achieve diverse malicious outcomes in Semantic Communication (SC) systems, alongside a provable defense mechanism.
When Does Persona Prompting Actually Help? A Retrieval and Metric Analysis of Expert Role Injection in LLMs
Persona prompting does not universally improve LLM performance; instead, it systematically trades increased expertise depth for reduced clarity, making multi-metric evaluation essential.
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Papers
cs.AIcs.LGRecentMay 28, 2026
When Does Persona Prompting Actually Help? A Retrieval and Metric Analysis of Expert Role Injection in LLMs
Shuai Xiao, Su Liu, Weikai Zhou, Jialun Wu +3 more
Persona prompting does not universally improve LLM performance; instead, it systematically trades increased expertise depth for reduced clarity, making multi-metric evaluation essential.
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cs.CRcs.AIRecentApr 25, 2026