学科分类
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23 个结果
  • 简介:UsingthesamplesfromeveryMonday'scolumn'theMostPromisingStocksRecommendedbyAnalystsThisWeek'onShanghaiSecuritiesNewsduringtheperiodfromSep.2000toDec.2003,thispaperanalyzestheperformanceofthestocksrecommendedbyanalystsduringthefollowingweek.Firstly,theanalystsareinclinedtorecommendthestockswithbetterperformanceinthelatestweek.Secondly,theportfoliosformedbytheanalystrecommendationshaveremarkablypositiveabnormalreturnsonMonday,whiletheydonotoutperformthemarketfromTuesdaytoFriday,evenhaveremarkablynegativeabnormalreturns.

  • 标签: 中国 股票市场 市场分析 异常报酬
  • 简介:ThetraditionalevaluationonChinesegraduateschoolsusuallyfocusonthecomprehensivefactorsofmaster'sanddoctoralprograms.ThispaperattemptstotestahypothesisontherelationshipbetweengraduateprogramsandtheratingsofChinesegraduateschools.TheeducationalevaluationhistorybothintheU.S.andinChinaisbrieflyreviewedandcompared.Acasestudyisperformedbyusingpartofthegraduateschools'datafromChinesepolytechnicuniversitiesin1994.Thecomprehensivefactorsthataffectthegraduateschools'scaleareexamined.Theresultindicatesthatdifferentgraduateprogramsdoaffectgraduateschools'ratings.Twocomprehensivefactorsareobtainedfromseveralindicatorsrepresentingmaster'sscaleanddoctoralscalerespectively.Thepaperalsointendstohelpprovideanewevaluationmethodinrankinggraduateschools'scale.

  • 标签: EDUCATIONAL evaluation RATINGS & RANKINGS factor
  • 简介:Afterthereformandopening,theeconomicrelationshipbetweenChinaandtheworldisstrengthenedheavily.Theoretically,internationalfactorshaveimpactonthedomesticgeneralpricelevelthroughasetofchannels.Thispaperemployedasampleincludingmonthlydataoffiverepresentativeindicators,toexploretheinfluenceofinternationalfactorsonChinesepricelevel.TheempiricalresultsshowedthatthereisanobviouslagforChineseCPIreactingtointernationalshocks,whilethePPIreactsimmediately.TheimpactofinternationalfactorsonChineseCPIandPPIusuallylasts12monthsatleastandtheyalwaysexhibitadifferenttransmissionmechanismforinternationalshocks.Besides,afurtherstudyrevealedthatsomestructure-breakpointsintheinfluencemechanismofinternationalfactorsexist,andgreatchangesoftheimpactdirectionandsignificancefordifferentfactorshavetakenplaceinthesubsampleperiods.

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  • 简介:瓷器公司在中国由于证券市场的发展吸引了许多注意。列出的中国公司的列出的地位成为暗示一张股票的潜在的风险的重要指示物。当他们做进一步的决定时,因此预言列出的中国公司的地位为股东和投资者显然是关键的。根据为中国公司的四可能的清单地位,研究人员们作为在数据采矿区域典型的一个分类问题提出上述问题。很多的分类技术被实现了基于他们的金融因素预言列出的中国公司的地位。通常,为每列出的公司有超过150个金融因素,并且特征选择在分类方法的实现前被需要。在文学,研究人员与变化使用了t测试选择相关因素的通货膨胀因素(VIF)分析。然而,如此的方法不能在高维的盒子中被使用。在这份报纸,我们使用惩罚回归的想法基于一个逻辑回归模型选择感兴趣的因素,然后使用流行分类方法预言公司地位。我们的结果证明建议方法能发现更代表性的因素并且改进分类方法的预言精确性。

  • 标签: LOGISTIC回归模型 中国企业 上市公司 状态预测 特征选择 惩罚