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金融证券分析师投资评级数据的分析和挖掘
引用本文:金轶雯,白峰杉.金融证券分析师投资评级数据的分析和挖掘[J].数学的实践与认识,2008,38(13).
作者姓名:金轶雯  白峰杉
作者单位:1. 清华大学,数学科学系,北京,100084;中国国际金融有限公司,北京,100004
2. 清华大学,数学科学系,北京,100084
摘    要:证券分析师为股票市场提供上市公司的信息,是股票市场上的重要角色.随着中国股市的发展,各类证券投资咨询机构发布的投资研究报告也越来越多,它们对投资者特别是机构投资者发挥着越来越大的影响.通过建立该问题的数学和统计模型,评估了证券分析师投资建议的实际效果,并通过数据挖掘方法进一步筛选出了各个行业的明星分析师.对金融证券分析师投资评级数据的深入分析和挖掘,有助于投资者更加合理有效的使用这些信息.

关 键 词:投资评级  超额收益  上调  下调

Mining the Data of the Equity Analysts' Recommendations
JIN Yi-wen,BAI Feng-shan.Mining the Data of the Equity Analysts'' Recommendations[J].Mathematics in Practice and Theory,2008,38(13).
Authors:JIN Yi-wen  BAI Feng-shan
Abstract:Equity analysts serve an important role in bringing information about companies to the stock market.With the development of stock market in China,the influence of the equity analysis and their reports has increased considerably in the recent years.mathematical and statistical models are established in this paper to examining the informaiton value of analysts′ recommendations.It is shown that the analyst recommendation do have investment value in the long term especially to large institutions.Data mining strategies are applied to select the star analysts among the different industries.This would be helpful in using the information efficiently.
Keywords:recommendation  abnormal return  upgrade  downgrade
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