摘要
文章分别采用HD法和GPH法对2005年8月1日至2009年12月31日的十种货币兑人民币汇率日交易数据进行研究,对其长期记忆参数d进行估算,结果发现:人民币汇率不服从经典的有效市场假设;人民币汇率存在明显的分形特征,其中,美元、日元、港币、韩元、欧元、新元、林吉特和卢布等八种货币兑人民币汇率均表现出显著的长期记忆性,英镑和澳元体现为短期记忆性。在此基础上,文章对我国外汇市场干预的必要性进行了思考并提出了相应的政策建议。
Based on the analysis of the ARFIMA (p, d, q) model, this paper uses both of GPH method and HD method to test the long memory characteristics of RMB exchange rate. The sample contains daily data (from 2005/07/21 to 2008/06/13 ) of ten foreign exchanges, Through the estimation of the long memory parameter d, this paper finds that all of the exchange rates are not normal distribution and RMB exchange rates have obvious fractal characteristics, Dollar (U. S. ), Yen (Japanese), Hong Kong Dollar, Won (South Korea), Euros, Singapore Dollar, Ringgit (Malaysia) and Russian Ruble to RMB exchange rates have clear characteristics of long memory. Pounds Sterling ( United Kingdom) and Australian Dollar to RMB exchange rates have the characteristics of instantaneous memory. Based on the empirical result, this paper also brings forward of the necessary suggestions on the foreign exchange market intervention.
出处
《华东经济管理》
CSSCI
2011年第1期88-91,共4页
East China Economic Management