"Identifying, Understanding, and Exploiting Semantics During Exact Inference in Discrete Bayesian Networks"

“在离散贝叶斯网络的精确推理过程中识别、理解和利用语义”

• 批准号: 238880-2012
• 负责人: Butz, Cory
• 金额: $ 1.02万
• 依托单位: University of Regina
• 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=547121
• 关键词: Identifying; Understanding; Exploiting; Semantics; During

My research focuses on Bayesian networks, which are a formal framework for uncertainty management based on probability theory. In particular, I study Bayesian network inference. Our research program may lead to a better understanding of the theory of evolution. The field of phylogenetics presents difficult statistical and computational problems. Given the flood of molecular data, it is not feasible to test all possible evolutionary trees for some sample data. Instead, only a portion of possible trees are scored. By providing a more informative and efficient method for scoring trees, our approach will score more trees in the same amount of time, likely including trees that more accurately reflect the evolution of species. Hence, it is reasonable to expect that our system, called DataBayes, will provide better results, both in terms of accuracy and efficiency, than MrBayes, a standard program for the Bayesian estimation of phylogeny. By providing a better evolutionary tree, the impact of our research findings may be immense.

我的研究重点是贝叶斯网络，这是一个基于概率论的不确定性管理的正式框架。特别是，我研究贝叶斯网络推理。我们的研究项目可能会使我们更好地理解进化论。遗传学领域提出了困难的统计和计算问题。鉴于分子数据的泛滥，对一些样本数据测试所有可能的进化树是不可行的。相反，只有一部分可能的树被评分。通过提供一种信息量更大、更有效的树木评分方法，我们的方法将在相同的时间内对更多的树木进行评分，其中可能包括更准确地反映物种进化的树木。因此，这是合理的期望，我们的系统，称为DataBayes，将提供更好的结果，无论是在准确性和效率方面，比MrBayes，贝叶斯估计遗传学的标准程序。通过提供一个更好的进化树，我们的研究发现的影响可能是巨大的。