提出可动态调整观点的论证框架，让决策者用视角操控影响判断结果。
Choosing the Lens: Strategic Perspective Activation in Context-Dependent Argumentation
- 基于上下文动态决定攻击是否生效，保留冲突自由
- 部分激活视角可让结论翻转，现有观众无法复现此结果
- 证明视角操控问题是NP难，凸显策略选择的复杂性
同一论证在不同外部环境下需重新评估。掌握环境规则的主体拥有战略杠杆，但传统形式化框架无法直接刻画。本文提出上下文依赖论证框架（CDAFs），扩展了Dung理论：每个上下文下由败诉函数决定哪些攻击成功。被阻断的攻击不删除，而是反转，确保扩展始终与攻击关系无冲突。通过关联相关集ρ和优先级π的视角标记特化，构造败诉函数。小规模示例中，目标论点在全相关优先级下均被拒绝，但在部分激活下反而被接受，且任何标准论证框架（VAF）观众都无法复制该结果。我们定义对应的决策问题ACTIVATION-MANIPULATION，并给出基准复杂度边界：在基底语义下带强制视角时，该问题为NP完全，其难解性源于激活选择本身。
原文摘要 · Abstract (English)
The same arguments often need to be evaluated under different external regimes. An agent with influence over the regime has a strategic lever that standard formalisms do not directly capture. We introduce context-dependent argumentation frameworks (CDAFs), an extension of Dung's theory in which a defeat function determines, per context, which attacks succeed. Blocked attacks are inverted rather than deleted, so extensions stay conflict-free with respect to the attack relation. A perspective-labeled specialisation derives the defeat function from a relevance set $ρ$ and a priority $π$. The relevance set is the agent's action space. In a small worked example, the agent's target argument is rejected under every full-relevance priority, yet accepted under a partial activation whose outcome no VAF audience can mirror. We define the corresponding decision problem, ACTIVATION-MANIPULATION, and record baseline complexity bounds. For grounded semantics with mandatory perspectives the problem is NP-complete, and the hardness comes from the activation choice itself.
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