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去年6月21日，美国对伊朗发起“午夜之锤”打击行动，美国总统特朗普宣布美军“成功打击”伊朗福尔道、纳坦兹和伊斯法罕3处核设施。（新华社），详情可参考搜狗输入法2026
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Abstract:Humans shift between different personas depending on social context. Large Language Models (LLMs) demonstrate a similar flexibility in adopting different personas and behaviors. Existing approaches, however, typically adapt such behavior through external knowledge such as prompting, retrieval-augmented generation (RAG), or fine-tuning. We ask: do LLMs really need external context or parameters to adapt to different behaviors, or do they already have such knowledge embedded in their parameters? In this work, we show that LLMs already contain persona-specialized subnetworks in their parameter space. Using small calibration datasets, we identify distinct activation signatures associated with different personas. Guided by these statistics, we develop a masking strategy that isolates lightweight persona subnetworks. Building on the findings, we further discuss: how can we discover opposing subnetwork from the model that lead to binary-opposing personas, such as introvert-extrovert? To further enhance separation in binary opposition scenarios, we introduce a contrastive pruning strategy that identifies parameters responsible for the statistical divergence between opposing personas. Our method is entirely training-free and relies solely on the language model's existing parameter space. Across diverse evaluation settings, the resulting subnetworks exhibit significantly stronger persona alignment than baselines that require external knowledge while being more efficient. Our findings suggest that diverse human-like behaviors are not merely induced in LLMs, but are already embedded in their parameter space, pointing toward a new perspective on controllable and interpretable personalization in large language models.
«Администрация демонстрировала непоследовательность и часто неточность в объяснениях причин войны, целей и способов их достижения. Я не думаю, что администрация стремилась ввести в заблуждение, но создается впечатление, что они строят самолет в процессе полета», — заявил Майкл Сингх, курировавший вопросы Ближнего Востока в администрации 43-го президента США Джорджа Буша-младшего.