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.
业绩“高光”背后的偶然性与隐忧翻阅彩客新材的招股书和问询回复内容看来，彩客新材2026年上半年的业绩大减有迹可循。在报告期内，特别是2024年所呈现的靓丽业绩增长。。新收录的资料对此有专业解读
林劍介紹稱，2025年，外國人出入境人次超過8200萬，同比上升26.4%，其中免簽入境人次同比上升接近50%。。新收录的资料对此有专业解读
The conventional wisdom, Nguyen recalled, was that this was simply a reflection of the left-leaning academic corpus these models were trained on. But Nguyen had a hypothesis: “These agents are doing a lot of work. And if they’re getting none of the reward for all of this work, it kind of stands to reason — it wouldn’t be the craziest surprise that they might map that towards a more Marxist view of the world.” Hall ran with the idea almost immediately, and the three researchers were soon DMing each other to design the experiment.，更多细节参见新收录的资料
游戏里，树只能种在森林里，不同区域有着不同的土质；摆放、欣赏名贵字画时，必须戴上手套。玩家们频频吐槽“鱼不值钱”，实则是波波的刻意设计：桃源村物产丰富，谁也不缺，天生天长的东西，自然不值钱。