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2022-03-03
摘要翻译:
这项工作建议对以前介绍的一类异构agent模型进行修改,允许以统一的方式包含不同类型的agent动机和行为。代理在一个高度简化的环境中操作,在这个环境中,它们只能做多或做空资产的一个单元。资产的价格既受外部信息流的影响,也受代理人的需求的影响。每个agent的当前策略由一对跨越当前价格的移动阈值定义。当价格超过特定代理的任一阈值时,该代理切换位置,并生成一对新的阈值。不同种类的阈值运动对应于不同的动机来源,从纯粹理性的信息处理,到由反常激励和道德风险引起的理性(但往往是不受欢迎的)行为,再到纯粹的心理效应。与前一类模型一样,这类最简单的模型精确地符合有效市场假说,这一事实允许在代理一级的属性与全球一级的EMH价格统计数据的违反之间建立因果关系。
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英文标题:
《Rational Expectations, psychology and inductive learning via moving
  thresholds》
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作者:
H. Lamba and T. Seaman
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最新提交年份:
2007
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分类信息:

一级分类:Quantitative Finance        数量金融学
二级分类:Trading and Market Microstructure        交易与市场微观结构
分类描述:Market microstructure, liquidity, exchange and auction design, automated trading, agent-based modeling and market-making
市场微观结构,流动性,交易和拍卖设计,自动化交易,基于代理的建模和做市
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一级分类:Physics        物理学
二级分类:Computational Physics        计算物理学
分类描述:All aspects of computational science applied to physics.
应用于物理学的计算科学的各个方面。
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英文摘要:
  This work suggests modifications to a previously introduced class of heterogeneous agent models that allow for the inclusion of different types of agent motivations and behaviours in a unified way. The agents operate within a highly simplified environment where they are only able to be long or short one unit of the asset. The price of the asset is influenced by both an external information stream and the demand of the agents. The current strategy of each agent is defined by a pair of moving thresholds straddling the current price. When the price crosses either of the thresholds for a particular agent, that agent switches position and a new pair of thresholds is generated.   Different kinds of threshold motion correspond to different sources of motivation, running the gamut from purely rational information-processing, through rational (but often undesirable) behaviour induced by perverse incentives and moral hazards, to purely psychological effects. As with the previous class of models, the fact that the simplest model of this kind precisely conforms to the Efficient Market Hypothesis allows causal relationships to be established between properties at the agent level and violations of EMH price statistics at the global level.
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PDF链接:
https://arxiv.org/pdf/0709.4242
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