Combining probability distributions for statistical inference on the basis of complementary methods

基于互补方法组合概率分布进行统计推断

• 批准号: RGPIN-2014-06495
• 负责人: Bickel, David
• 金额: $ 1.02万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=567845
• 关键词: Combining; probability; distributions; statistical; inference

Dr. Bickel published a general method of combining probability distributions without setting weights subjectively, as is done with many methods of combining expert opinions in the form of prior distributions. That general method was used to combine previous statistical methods even when they individually give conflicting interpretations of the same set of measurements. This proposal extends that work to concrete problems faced in statistical analyses of measurements. In addition, the reliability of that method of distribution combination will be compared to other methods of combining probability distributions and to the usual statistical methods, which do not involve combining probability distributions. That reliability will be determined on the basis of mathematical theory when possible and on the basis of simulated measurements otherwise. Applications of the proposed research include the analysis of measurements of the activity levels of thousands of genes and other large-scale measurements. Improvements in interpreting the results of these new data types can lead to new biological discoveries, for example, of which genes in tomatoes have activity levels depending on the breed or on the stage of fruit development. This knowledge may potentially result in more efficient food production within Canada and within its trading partners, making higher-quality food more readily available to Canadians. Applications of the proposed research also include learning from smaller-scale sets of measurements whenever current methods of data analysis report different interpretations. Such situations are common not only in basic science but also in agriculture. In addition to the above long-term benefits of the research to the growth of scientific knowledge and the possibility of more efficient food production, this proposal can have short-term economic benefits via the training of highly qualified personnel. The students trained in the course of the proposed projects will be equipped to contribute to data analyses in basic sciences and in biostatistics for agricultural applications, fields that together provide employment opportunities to a large proportion of Canadian statisticians.

Bickel博士发表了一种不主观设定权重的组合概率分布的通用方法，就像许多以先验分布形式组合专家意见的方法一样。这种通用方法被用于联合收割机结合以前的统计方法，即使它们对同一组测量结果给出了相互矛盾的解释。这项建议将这项工作扩展到计量的统计分析所面临的具体问题。此外，该分布组合方法的可靠性将与其他组合概率分布的方法以及不涉及组合概率分布的常用统计方法进行比较。在可能的情况下，将根据数学理论确定可靠性，否则将根据模拟测量确定可靠性。拟议研究的应用包括分析数千个基因的活性水平测量和其他大规模测量。解释这些新数据类型结果的改进可以带来新的生物学发现，例如，西红柿中哪些基因的活性水平取决于品种或水果发育阶段。这一知识可能会导致加拿大国内及其贸易伙伴更有效地生产粮食，使加拿大人更容易获得更高质量的粮食。拟议研究的应用还包括从较小规模的测量数据集学习，每当当前的数据分析方法报告不同的解释。这种情况不仅在基础科学领域很常见，在农业领域也很常见。除了上述研究对科学知识的增长和更有效的粮食生产的可能性的长期效益外，该建议还可以通过培训高素质的人才来产生短期经济效益。在拟议的项目中受训的学生将能够为基础科学和农业应用生物统计学的数据分析作出贡献，这些领域共同为加拿大很大一部分统计人员提供就业机会。