Recent advances in statistical methodologies in evaluating program for high-dimensional data

来源 :高校应用数学学报B辑(英文版) | 被引量 : 0次 | 上传用户:sist_003
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The era of big data brings opportunities and challenges to developing new statistical methods and models to evaluate social programs or economic policies or interventions.This paper provides a comprehensive review on some recent advances in statistical methodologies and models to evaluate programs with high-dimensional data.In particular,four kinds of methods for making valid statistical inferences for treatment effects in high dimensions are addressed.The first one is the so-called doubly robust type estimation,which models the outcome regression and propensity score functions simultaneously.The second one is the covariate balance method to construct the treatment effect estimators.The third one is the sufficient dimension reduction approach for causal inferences.The last one is the machine learning procedure directly or indirectly to make statistical inferences to treatment effect.In such a way,some of these methods and models are closely related to the de-biased Lasso type methods for the regression model with high dimensions in the statistical literature.Finally,some future research topics are also discussed.
其他文献
In this paper,we introduced a numerical approach for solving the fractional differ-ential equations with a type of variable-order Hilfer-Prabhakar derivative of order μ(t) and v(t).The proposed method is based on the Jacobi wavelet collocation method.Acco
为理解区域演化对寄生虫-宿主Turing不稳定的影响,本文以寄生虫-宿主传染病模型为主体,研究增长区域上的反应扩散问题,通过线性化和谱分析给出模型产生Turing不稳定的条件,再利用数值模拟验证理论结果.结果表明扩散系数的增加有利于Turing斑图的形成,而区域增长对Turing斑图形成起破坏作用.
In this paper,we first establish narrow region principle and decay at infinity theo-rems to extend the direct method of moving planes for general fractional p-Laplacian systems.By virtue of this method,we investigate the qualitative properties of positive
This paper studies a time-variant multi-objective linear fractional transportation problem.In reality,transported goods should reach in destinations within a specific time.Con-sidering the importance of time,a time-variant multi-objective linear fractiona
目的:探究贵州生黄精多糖的体外抑菌作用.方法:采用石油醚脱脂后超声提取再纯化得到黄精多糖,以白色念珠菌、金黄色葡萄球菌、蜡样芽孢杆菌、解淀粉芽孢杆菌、巨大芽孢杆菌为抑菌试验对象,通过纸片法,探究黔产生黄精多糖对这五种菌的抑菌效果.结果:实验表明黔产生黄精多糖对五种供试菌株均有明显的抑菌作用,抑菌效果:巨大芽孢杆菌>解淀粉芽孢杆菌>蜡样芽孢杆菌>金黄色葡萄球菌>白色念珠菌.结论:在药液浓度相同的条件下,黔产生黄精多糖对巨大芽孢杆菌的抑制效果最优,本实验为真菌性或者细菌性感染寻求绿色天然且毒副作用小的抑菌剂提
对黄精组培进展进行简要概况,对影响组培的主要因素进行总结,详细论述了外植体污染控制、植物生长调节剂组合以及组培苗移栽驯化的常见的问题及相关建议,提出黄精组培的工作思考,可为黄精组培快繁技术和产业化发展提供参考.
Accurate pancreas segmentation is critical for the diagnosis and management of diseases of the pancreas.It is challenging to precisely delineate pancreas due to the highly vari-ations in volume,shape and location.In recent years,coarse-to-fine methods hav
Polygon clipping is of great importance in computer graphics.One of the popular algorithms to clip a polygon is Cohan-Sutherland Hodgeman algorithm which is based on line clipping.Cohan Sutherland Hodgeman algorithm clips the polygon against the given rec
目的 探讨COX-2和SLeX表达与甲状腺乳头状癌(PTC)临床病理指标的关系.方法 120例PTC手术切除标本,应用EliVisionTM plus免疫组化两步法检测COX-2和SLeX在癌组织及癌旁甲状腺组织中的表达,分析其在PTC组织中的表达与患者年龄(<45岁与≥45岁)、TI-RADS分类[(4类+5类)与6类]、TNM分期[(T1期+T2期)与T3期]、癌浸润(有、无)、淋巴结转移(有、无)等临床病理指标的关系.结果 COX-2阳性染色多见于细胞质,SLeX阳性染色多见于细胞膜和细胞质.癌组织
根据GB 5009.87-2016中钒钼黄分光光度法测定婴幼儿谷物类辅助食品中磷含量的分析,建立数学模型,分析不确定度来源,推导出各分量不确定度计算公式,对所有不确定度分量进行合成.得出婴幼儿谷物类辅助食品中磷含量不确定度评定结果.结果 表明:当婴幼儿谷物类辅助食品中磷含量为378 mg/100 g时,其扩展不确定度为5.42 mg/100 g.