P值之争与管理学研究:先验概率的意义
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    摘要:

    P值之争的本质是人们把统计检验和统计推断混淆,直接用统计检验结果来进行统计推断.这导致许多似是而非的理论被接受.统计检验犯错的是假阳性概率.统计推断犯错的是假阳性之反概率.两种概率之间的数值关系受先验概率影响很大.先验概率越高,利用统计检验的结果进行推断所犯错误概率就越小.如果先验概率很小,即使假阳性概率很小,利用该结果进行推断所犯错误概率也很大.本文以管理学研究为例,提出解决该问题的办法是,通过与现实和与理论的双重对话来掌握先验概率,以提高基于统计检验的结果进行统计推断的可靠性.本文的科学哲学意义是,揭示了科学研究是先验与经验相统一的本质,以及科学研究的不充分决定性的特征.

    Abstract:

    Economists’comprehensive judgments and confidence levels are increasingly valuable in today’s environment of heightened economic fluctuations and uncertainty. However, existing economist confidence indexes are not sufficiently regarded due to their low frequency, high compilation costs, and lack of timeliness. This study constructs a monthly Chief Economist Confidence Index and its subindexes (CECI) by leveraging online text data from the “Chief Economists Forum” and employing cuttingedge natural language processing technologies, specifically the TextRank+FinBERT method. The paper finds that the CECI trends consistently with the National Bureau of Statistics’Quarterly Economist Confidence Index, but features stronger timeliness and a higher update frequency. Compared to the confidence indexes of other economic entities, the confidence of chief economists serves as a more effective indicator of the business cycle. In terms of macroeconomic forecasting, the CECI series can significantly enhance the outofsample forecasting performance for key macroeconomic variables. This study represents a valuable attempt to construct business cycle indicators and conduct macroeconomic forecasts using artificial intelligence methods. The methodology can be applied to the construction of other highfrequency business cycle indexes.

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贾良定,林泽民,王涛,卜濛濛,何刚. P值之争与管理学研究:先验概率的意义[J].管理科学学报,2024,(3):1~14

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  • 在线发布日期: 2024-04-18
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