Influence diagnostics and outlier tests for semiparametric mixed models

Summary. Semiparametric mixed models are useful in biometric and econometric applications, especially for longitudinal data. Maximum penalized likelihood estimators (MPLEs) have been shown to work well by Zhang and co-workers for both linear coefficients and nonparametric functions. This paper considers the role of influence diagnostics in the MPLE by extending the case deletion and subject deletion analysis of linear models to accommodate the inclusion of a nonparametric component. We focus on influence measures for the fixed effects and provide formulae that are analogous to those for simpler models and readily computable with the MPLE algorithm. We also establish an equivalence between the case or subject deletion model and a mean shift outlier model from which we derive tests for outliers. The influence diagnostics proposed are illustrated through a longitudinal hormone study on progesterone and a simulated example.     

对提高我国金融监管效率与监管创新的思考

防范和化解金融风险 ,是各国金融监管当局的共同课题。但从目前我国金融监管当局监管的实际情况来看 ,金融监管还处于一种低效率的状态 ,存在着许多不足和缺陷。面对加入WTO、金融市场全球一体化的形势 ,要提高我国金融监管效率 ,增强管理风险的能力 ,就必须从完善金融监管的基础和监管创新两方面着手     

哲学视域中的和谐世界研究

和谐世界理念是中国共产党在新的历史条件下对国内外形势的正确判断,并向世界各国提供了一种新的发展思路。文章在对和谐世界的文化底蕴和基本内涵分析的基础上,从哲学层面对和谐世界加以探讨。     

论党的阶级基础与群众基础

马克思主义建党学说强调阶级基础与群众基础的统一 ,中国共产党在领导中国革命和建设的过程中 ,之所以能够与时俱进 ,是同实践这一伟大思想分不开的     

我国区域刑事法律冲突初探

我国各民族之间的差异、民族区域自治制度及其自治权的存在是我国区域刑事法律冲突产生的基本原因,而通过制定顾全大局、兼顾特别的变通性、补充性刑法规范,可缓解这一冲突;通过加快少数民族地区的发展步伐,逐步消除民族之间的政治、经济、文化上的差距,进而达到彻底消除这一冲突,实现法制统一的良好局面。     

NURBS曲面的算法分析及实现

讨论了ＮＵＲＢＳ曲线和节点矢量、控制点和基函数对曲面形状的影响，给出了ＮＵＲＢＳ的算法分析及其实现方案，最后，将ＮＵＲＢＳ曲面与老式曲面（如Ｂ样条、Ｂｅｚｉｅｒ曲面等）进行了比较。     

A regression-based smoothing spline Monte Carlo algorithm for pricing American options in discrete time

American options in discrete time can be priced by solving optimal stopping problems. This can be done by computing so-called continuation values, which we represent as regression functions defined recursively by using the continuation values of the next time step. We use Monte Carlo to generate data, and then we apply smoothing spline regression estimates to estimate the continuation values from these data. All parameters of the estimate are chosen data dependent. We present results concerning consistency and the estimates’ rate of convergence.     

关于“建设生态文明”提出的依据及实现的途径

党的十七大适应国内外形势的新变化，顺应各族人民过上更好生活的新期待，提出了实现全面建设小康社会奋斗目标的新要求，并首次将“建设生态文明”写入报告，这是我们党科学发展、和谐发展理念的一次升华。而探讨生态文明形成的理论依据、现实依据以及建设生态文明的实现途径，对理解和落实十七大报告具有一定的借鉴作用。     

服装制板、打板在实践应用中的探索

从服装企业生产的角度,阐述了服装制板、打板在生产实践中的具体应用。并结合实践经验,分析总结了针对不同情况与要求如何快速、准确、合理地制板、打板,以便为服装生产企业提供优质、方便、快捷的技术服务,促进服装企业的快速发展。     

Data skeletons: simultaneous estimation of multiple quantiles for massive streaming datasets with applications to density estimation

We consider the problem of density estimation when the data is in the form of a continuous stream with no fixed length. In this setting, implementations of the usual methods of density estimation such as kernel density estimation are problematic. We propose a method of density estimation for massive datasets that is based upon taking the derivative of a smooth curve that has been fit through a set of quantile estimates. To achieve this, a low-storage, single-pass, sequential method is proposed for simultaneous estimation of multiple quantiles for massive datasets that form the basis of this method of density estimation. For comparison, we also consider a sequential kernel density estimator. The proposed methods are shown through simulation study to perform well and to have several distinct advantages over existing methods.