Agents in Conflict: Comparative Agent-Based Modeling of International Crises and Conflicts 2017-07-30

A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philo

  1. فريال المتفائلة
    Agents in Conflict: Comparative Agent-Based Modeling of International Crises and Conflicts
    by Masad, David P., Ph.D., George Mason University, 2016, 207


    Inter-state conflicts are a key area of study in international relations, and have been approached with a variety of techniques, from case studies of individual conflicts, to formal analysis of abstract models and statistical investigations of all such conflicts. In particular, there are a variety of theories as to how states make decisions in the face of conflicts – such as when to threaten force, when to follow through, and when to capitulate to an opponent’s demand. Some scholars have argued that states may be viewed as rational decisionmakers, while others emphasize the role of psychological biases affecting individual leaders. Decision making is challenging to study in part because of its complexity: the decision makers may not just be individuals but organizations, following internal procedures and reflecting institutional memory. Furthermore, the decisions are often believed to be strategic, reflecting the decision makers’ anticipation of multiple other actors’ potential responses to each possible decision.

    In this dissertation, I demonstrate that agent-based models (ABMs) provide a powerful tool to address this complexity, and advance their use as a bridge between different methodologies. Agents in ABMs can be used to represent countries and endowed with a variety of internal decision making models which can operationalize a variety of theories drawn from case studies, psychological experiments or game-theoretic analysis. The specific decision model agents utilize may be changed without altering the sub-models governing how the agents interact with one another. This allows us to simulate the same overall interactions utilizing different decision making theories and observe how the outcomes differ. Furthermore, if these interactions correspond to real-world events, we may directly see how much explanatory or predictive power the outputs of the model variants provide. If one variant’s outputs correspond closer to the empirical data, it provides evidence supporting that variant’s underlying theory.

    I implement two agent-based models, extending well-established prior models of international conflict: the International Interaction Game (Bueno de Mesquita and Lalman, 1992) and the Expected Utility Model (Bueno de Mesquita, 2002). For each, I start with their original agent decision-making models and develop several variants grounded in relevant theories. I then instantiate the models with historic, empirically-derived data and run them forward to generate sets of simulated outcomes, which I compare to empirical data on the relevant time periods. I find that non-rational models of decision making in the International Interaction Game provide similar explanatory power to the purely rational model, and yield rich satisficing behavior absent in the original model. I also find that the Expected Utility Model variant implementing a Schelling (1966)-inspired model of coercion yields richer dynamics and greater explanatory power than the original model.

    In addition to providing evidence in support of particular theories and hypotheses, this work demonstrates the power of the comparative modeling methodology in studying international conflict. Future work will involve adding more statistical controls to the model output analysis, comparative analysis between the outputs of the two overall models, and extension of the decision making models for each. The same methodology may also be expanded to other formal and computational models of international relations, and social science more broadly.


    1. phd-thesis.png
    RACHID RD و الشيطان السياسي معجبون بهذا.

آخر التعليقات

  1. الشيطان السياسي
    الشيطان السياسي
    الإصدار: 2017-07-30
    شكرا لك
  • من نحن

    موقع عربي أكاديمي أنشئ خصيصاً للمهتمين والباحثين في مجال العلوم السياسية والعلاقات الدولية. تضم الموسوعة مقالات، بحوث، كتب ومحاضرات، تتناول القضايا السياسية، الأمنية، العسكرية، الاقتصادية والقانونية.
  • ملاحظة حول الحقوق الفكرية

    الموسوعة هي منصة أكاديمية للنشر الإلكتروني مفتوحة أمام الكتاب والقراء لرفع المواد وتعديلها وفق سياسة المشاع الإبداعي العالمية، يتم رفع الملفات ومشاركتها عبر شبكة الإنترنت تحت هذا البند، إن مسؤولية الملفات المرفوعة في الموسوعة تعود للمستخدم الذي وفّر هذه المادة عبر الموسوعة ، حيث تعد الموسوعة مجرد وسيلة بين الكاتب والقارئ، إذا كنت تعتقد أن نشر أي من هذه الملفات الإلكترونية ينتهك قوانين النشر والتوزيع لكتبك أو مؤسسة النشر التي تعمل بها أو من تنوب عنهم قانونياً، أو أي انتهاك من أي نوع فيرجى التبليغ عن هذا الملف عبر خاصية "اتصل بنا " الواقعة في آخر الصفحة لكل كتاب الكتروني، علماً أنه سيتم النظر في التبليغ وإزالة الملف الإلكتروني عند التأكد من الانتهاك خلال مدة أقصاها 48 ساعة.
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