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Heterogeneity of agents, transactions costs and the exchange rate

机译:代理人的异质性,交易成本和汇率

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摘要

We develop a model of the exchange rate that has two features. First, there are non-linearities that arise from the existence of transaction costs in goods markets. Second, the model assumes heterogeneous agents who use simple forecasting rules, the 'fitness' of which is then controlled ex post by checking their profitability, and by switching to the more profitable rules. This model is capable of reproducing the empirical puzzles observed in exchange markets (disconnect puzzle, excess volatility, fat tails, volatility clustering). We analyse some policy implications of this type of modelling of the exchange rate.
机译:我们开发了具有两个特征的汇率模型。首先,由于商品市场中交易成本的存在而产生了非线性。其次,该模型假设异类代理商使用简单的预测规则,然后通过检查其盈利能力并切换到更具盈利性的规则来事后控制其“适合性”。该模型能够重现在交易所市场中观察到的经验难题(断开难题,过度波动,肥尾,波动聚类)。我们分析了这种类型的汇率建模的政策含义。

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