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A Cybernetic Model of Macroeconomic Disequilibrium

机译:一种宏观经济不平衡的网络学模型

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In "On Keynesian Economics and the Economics of Keynes" (1968) Leijonhufvud described his cybernetic vision for macroeconomic microfoundations and the dynamics that move the economy from one equilibrium to another. Here I implement that vision in agent-based model. I focus on the difference between price-led adjustments ("Marshallian" in the original text) and quantity-led adjustments ("Keynesian"). In a partial equilibrium model the two dynamics lead to the same equilibrium at the same speed through the same path. In a general equilibrium model the Keynesian dynamics overshoots and undershoots with consequent over-employment and unemployment. The agents within the model act by trial and error using very limited knowledge which I simulate here through the use of PI controllers. When a demand shock is treated with increased labor flexibility or positive productivity shock the result is a deeper recession and longer disequilibrium.
机译:在“对凯恩斯经济学和凯恩斯经济学”(1968年)Leijonhufvud描述了他对宏观经济微吻合的控制性视觉和将经济从一个平衡移动到另一个平衡的动态。这里我在此实现了基于代理的模型中的视觉。我专注于价格主导调整(“原始文本中的”Marshallian“)之间的差异和数量LED调整(”凯恩斯人“)。在部分平衡模型中,两个动力学通过相同的路径以相同的速度导致相同的平衡。在一般的均衡模型中,凯恩斯主义动态过度地过冲,下降,随之而来的过早,随之而来的过早就业和失业率。模型内的代理通过使用非常有限的知识进行试验和错误,通过使用PI控制器模拟这里。当随着劳动力增加或积极的生产率休克进行需求冲击时,结果是更深入的经济衰退和更长的不平衡。

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