基于心智模型的恐怖主义袭击扩展式演化博弈分析

Extensive-form Evolutionary Game Analysis on Terrorism Based Mental Model

政府反恐措施与恐怖分子袭击手段存在着相互观察、适应性演化的过程。本文首先构建了政府作为先行动者、恐怖分子作为后行动者的斯塔克伯格博弈模型，进一步建立了恐怖袭击问题的扩展式演化博弈模型。由于扩展式演化博弈的均衡分析需要考虑代际内和代际间不同层次的信念学习，造成了演化分析的复杂性。本文将“心智模型”概念引入到演化博弈，采取了心智模型演化解的分析方法，得出了简化后的演化均衡解。最后，结合新疆墨玉县6．28暴恐事件进行算例分析，比较怀特流形演化解和心智模型演化解的差异。心智模型演化解的结果表明，根据恐怖分子群体中选择袭击比例是否高于临界值，政府策略收敛到防御或者不防御。该求解方法通过将普遍接受的社会规范引人到演化过程分析，不仅简化了怀特流形的分析过程，而且均衡解展示了更为丰富的、更为切合实际管理问题的演化特征。

There are interactive and adaptive evolution courses between the anti-terrorist measures of gov- ernments and the attack behaviors of terrorists. Moreover, for a terrorist event, governments and terror- ists usually do not take the actions at the same time. In the paper,Stackelberg game model is first built, where governments decide to defense strategies at the first and terrorists decide the attack strategies in the latter. And then, according to the above exten- sive-form factor game, the extensive-form evolutionary game model about the terrorism attack problem is built.