Alternative Representations of Information in Microeconomic Systems

微观经济模型的一个自然特征， 经济主体的不确定性是 不同的代理人拥有不同的信息。 的动态 经济体系为代理人提供了获取 通过价格，购买数量和其他状态的更多信息 经济环境。 在整个过程中， 对系统未来的期望，并根据 这些期望。 这些期望可能关系到未来 政府的政策、未来的收入、物价的变化等等。 因此，正确建模的期望是至关重要的分析， 广泛的经济现象。 该项目严格审查的基本结构， 信息系统，以确定何时理性预期 平衡将导致对经济变化的反应， 变量 经济均衡的存在意味着， 期望是理性的。 这项工作研究的费用所产生的 信息获取主体和潜在信息内容 经济变量，如价格。 还审查了影响， 理性可达性分散决策 期望均衡 %%% 平衡的概念是一个动态系统 倾向于响应系统的变化而移动，是系统的核心。 分析经济现象和物理现象。 一个重要 大多数经济决策的一个方面是，它们是在 不确定性的存在。 例如，消费者做出的决定 像房子或汽车这样的大宗商品的购买， 未来的收入，未来的价格，以及经济状况。 不确定性是这种决定所固有的，尽管 价格等经济变量可能包含一些信息， 未来 微观经济模型的一个自然特征， 经济主体的不确定性是 不同的代理人拥有不同的信息。 的动态 经济体系为代理人提供了获取 通过价格，购买数量和其他状态的更多信息 经济环境。 在整个过程中， 对系统未来的期望，并根据 这些期望。 这些期望可能关系到未来 政府的政策、未来的收入、物价的变化等等。 因此，正确建模的期望是至关重要的分析， 广泛的经济现象。 这个项目以数学严谨的方式研究了 经济系统中各主体之间的信息和交流， 以及它们如何使系统达到平衡。

A natural feature of a microeconomic model which incorporates uncertainty on the parts of the economic agents is the possibility that different agents possess different information. The dynamics of an economic system provides agents with the opportunity for acquiring more information via prices, quantities purchased, and other states of the economic environment. Throughout this process agents form expectations about the future of the system, and make decisions based on those expectations. These expectations might concern future government policy, one's future income, changes in prices and so on. Therefore correctly modeling expectations is crucial to analyzing a wide range of economic phenomena. This project rigorously examines the fundamental structures of information systems to ascertain when rational expectations equilibrium will result in response to changes in the economic variables. The presence of an economic equilibrium implies that expectations are rational. The work studies the costs incurred by the agents of acquiring information, and the potential information content of economic variables such as prices. Also examined is the effect of decentralized decision-making on the attainability of rational expectations equilibrium. %%% The concept of equilibrium, that is a point to which a dynamic system tends to move in response to changes in the system, is central to the analysis of economic as well as physical phenomena. An important aspect of most economic decisions is that they are made in the presence of uncertainty. For instance, consumer decisions to make major purchases like houses or automobiles incorporate expectations about future income, future prices, and the state of the economy. Uncertainty is inherent in such decisions, although present values of economic variables like prices might contain come information about the future. A natural feature of a microeconomic model which incorporates uncertainty on the parts of the economic agents is the possibility that different agents possess different information. The dynamics of an economic system provides agents with the opportunity for acquiring more information via prices, quantities purchased, and other states of the economic environment. Throughout this process agents form expectations about the future of the system, and make decisions based on those expectations. These expectations might concern future government policy, one's future income, changes in prices and so on. Therefore correctly modeling expectations is crucial to analyzing a wide range of economic phenomena. This project studies in a mathematically rigorous way the structures of information and communication among agents in an economic system, and how they act to bring the system to equilibrium.