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统计学:二十一世纪的挑战和机遇(Ⅱ) 总被引:3,自引:0,他引:3
统计学中且个正在不断扩展的知识传承,对此,没有一个合适的词语来称呼,暂且称之为统计的核心:这个术语并没有被学术界广泛地接受,所以有必要对它的含义加以阐明:我们定义统计核心为众多统计工作的子集,这些统计工作指的是统计学内在的研究而不是它的延伸,尤其是那些触及特定学科领域的统计需求。作为“核心”的同义词, 相似文献
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本文对一类理赔额分布给出了Andersen风险过程终极破产概率的上、下界,并考查了理赔分布的平衡分布是NBU和NWU的破产概率的情况。 相似文献
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THE ESTIMATE OF THE RANK FOR REGRESSION COEFFICIENT MATRIX IN A MEDIAN REGRESSION MODEL 总被引:1,自引:0,他引:1
Miao Baiqi 《数学年刊B辑(英文版)》1992,13(2):205-214
It is discussed to infer the rank of regression coefficient matrix in a multivariate linear regression model. If the zero median vector is unique and the design matrices satisfy some weaker conditions, it is derived that the estimators of the rank of regression coefficient matrix under the minimum distance criterion by using model selection method is strongly consistent. 相似文献
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全球经济金融一体化的不断深入使得全球性的金融危机频频爆发。因此,金融危机传染的分析与检验便变得十分重要。本文首先运用非参数回归模型,通过局部多项式方法对股指收益率之间的局部相关系数进行估计,并在不同的置信水平下对局部相关系数的变化进行假设检验,通过定量地判断局部相关系数是否突然增大来检验危机传染的存在性,同时简单地刻画了危机传染的程度,并且指出了危机传染的具体时间段。最后应用上述方法对美国次债危机在各个国家或地区之间的传染效应进行了实证检验,证实了本文给出的检验方法的可行性,并得到了一些有意义的结论。 相似文献
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Today the one of the main social problem is employment. It is very important that how to treat with the relations among growth rates of economy, reformation strength and good employment and find the key point of macro control. In this paper the relationship among the employment of each industries, population, GDP and total investment in fixed assets is studied by mathematical modeling and applied mathematical statistics analysis. It is drawn that the outline of growth rates of employed persons in recent years. By these analyses our point view is to develop the tertiary industry so as to enhance the growth rates of employed persons when the economic increasing keeps appropriate rate. 相似文献
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