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Market efficiency and learning in an endogenously unstable environment

机译:内在不稳定的环境中的市场效率和学习

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摘要

An informationally inefficiency market is produced without an exogenous source of noise in the price. Fundamental traders acquire private information directly through research. Regression traders employ a learning process to extract the private fundamental information from the public price. The relative popularity between these two strategies evolves based on performance. The model converges towards adoption of regression analysis to the point of creating instability, endogenously producing a noisy price. The lack of a revealing price in the coupled learning and population processes reflects the Grossman and Stiglitz (Amer. Econ. Rev. 70(3)(1980)393) impossibility of informationally efficient markets.
机译:信息效率低下的市场在价格中没有外在的噪音源。基本交易员直接通过研究获取私人信息。回归交易者采用学习过程从公共价格中提取私人基本信息。这两种策略之间的相对受欢迎程度取决于性能。该模型趋向于采用回归分析,以至于造成不稳定,从而内生出高昂的价格。在学习和人口耦合过程中缺乏可揭示的价格反映了Grossman和Stiglitz(Amer。Econ。Rev. 70(3)(1980)393)信息高效市场的不可能。

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