...
首页> 外文期刊>Journal of Economic Dynamics and Control >Herding, a-synchronous updating and heterogeneity in memory in a CBS
【24h】

Herding, a-synchronous updating and heterogeneity in memory in a CBS

机译:CBS中的内存中的羊群,a同步更新和异构性

获取原文
获取原文并翻译 | 示例
           

摘要

This paper considers a simple continuous beliefs system (CBS) to investigate the effects on price dynamics of several behavioural assumptions: (ⅰ) herd behaviour; (ⅱ) a-synchronous updating of beliefs; and (ⅲ) heterogeneity in time horizons (memory) among agents. The recently introduced concept of a CBS allows one to model the co-evolution of prices and the beliefs distribution explicitly, while keeping track of the unpredictable nature of individual preferences (Technical Report. CeNDEF working paper 03-05, University of Amsterdam. Tinbergen Institute Discussion Paper 2003-073/1). As a benchmark model we take a simple CBS, which in a market with many traders exhibits a random walk driven by news. Using the explicit nature of the dynamics of the CBS we show that the introduction of herding modifies the random walk to an ARIMA(0,1,1) process, which is observationally equivalent to a reduction of the number of market participants. In terms of returns the model predicts MA(1) structure with a negative coefficient. A-synchronous updating leads to an MA(1) model for returns with GARCH(1,1) innovations, and predicts a relation between the ARCH and GARCH coefficients. Heterogeneity in memory leads to long-range dependence in returns. In the empirical section we perform a modest 'reality check' concerning the predicted sign of the MA coefficient and the relation between the ARCH and GARCH coefficients for exchange rate data.
机译:本文考虑了一个简单的连续信念系统(CBS),以研究几种行为假设对价格动态的影响:(ⅰ)群体行为; (ⅱ)同步更新信念; (ⅲ)代理之间时间范围(内存)的异质性。最近引入的CBS概念允许人们在对个人偏好的不可预测性进行跟踪的同时,明确地对价格和信念分布的共同演变进行建模(技术报告。CeNDEF工作论文03-05,阿姆斯特丹大学。廷伯根研究所讨论文件2003-073 / 1)。作为基准模型,我们采用一个简单的CBS,在市场上有很多交易员的情况下,CBS表现出受新闻驱动的随机游走。利用CBS动力学的显式本质,我们表明,引入羊群行为将随机游走修改为ARIMA(0,1,1)过程,从观察上讲,这等效于减少市场参与者的数量。在收益方面,模型预测系数为负的MA(1)结构。 A同步更新导致具有GARCH(1,1)创新的收益的MA(1)模型,并预测ARCH和GARCH系数之间的关系。记忆的异质性导致回报的长期依赖。在经验部分,我们对汇率系数的MA系数的预测符号以及ARCH和GARCH系数之间的关系进行了适度的“真实性检查”。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号