科技和产业
科技和產業
과기화산업
SCIENCE TECHNOLOGY AND INDUSTRIAL
2008年
11期
61~63
,共null页
R/S分析 H指数 ARFIMA模型 长记忆
R/S分析 H指數 ARFIMA模型 長記憶
R/S분석 H지수 ARFIMA모형 장기억
R/S analysis; Hindex; ARFIMA model; long-term memory
股票市场收益率的长记忆特征对于系统非线性结构的确定以及市场有效性的研究具有重要的意义。针对上海和深圳的日收益序列,采用非线性R/S方法来检验收益序列的长记忆特征,并用ARFIMA模型对收益率序列的长记忆性做了进一步判断,根据分段分析的结果,得出中国股市渐进趋于有效的结论。
股票市場收益率的長記憶特徵對于繫統非線性結構的確定以及市場有效性的研究具有重要的意義。針對上海和深圳的日收益序列,採用非線性R/S方法來檢驗收益序列的長記憶特徵,併用ARFIMA模型對收益率序列的長記憶性做瞭進一步判斷,根據分段分析的結果,得齣中國股市漸進趨于有效的結論。
고표시장수익솔적장기억특정대우계통비선성결구적학정이급시장유효성적연구구유중요적의의。침대상해화심수적일수익서렬,채용비선성R/S방법래검험수익서렬적장기억특정,병용ARFIMA모형대수익솔서렬적장기억성주료진일보판단,근거분단분석적결과,득출중국고시점진추우유효적결론。
Analysis for the characteristic of long--memory in stock market returns has important sence in research of market effectiveness and framework determination of nonlinear system. According to the index of dayly returns of Shanghai and Shenzhen,the paper utilizes the non--linearity R/S method to examine the long--memory characteristic, and does further judgement using ARFIMA model. According to the partitioned examination results, some valid conclusion of securities market of China have been drawn.