Local Power Analyses of Goodness-of-fit Tests for Copulas

Abstract.  The asymptotic behaviour of several goodness-of-fit statistics for copula families is obtained under contiguous alternatives. Many comparisons between a Cramér–von Mises functional of the empirical copula process and new moment-based goodness-of-fit statistics are made by considering their associated asymptotic local power curves. It is shown that the choice of the estimator for the unknown parameter can have a significant influence on the power of the Cramér–von Mises test and that some of the moment-based statistics can provide simple and efficient goodness-of-fit methods.     

Least squares estimation of varying‐coefficient hazard regression with application to breast cancer dose‐intensity data

To enhance modeling flexibility, the authors propose a nonparametric hazard regression model, for which the ordinary and weighted least squares estimation and inference procedures are studied. The proposed model does not assume any parametric specifications on the covariate effects, which is suitable for exploring the nonlinear interactions between covariates, time and some exposure variable. The authors propose the local ordinary and weighted least squares estimators for the varying‐coefficient functions and establish the corresponding asymptotic normality properties. Simulation studies are conducted to empirically examine the finite‐sample performance of the new methods, and a real data example from a recent breast cancer study is used as an illustration. The Canadian Journal of Statistics 37: 659–674; 2009 © 2009 Statistical Society of Canada     

Bayes linear analysis for graphical models: The geometric approach to local computation and interpretive graphics

This paper concerns the geometric treatment of graphical models using Bayes linear methods. We introduce Bayes linear separation as a second order generalised conditional independence relation, and Bayes linear graphical models are constructed using this property. A system of interpretive and diagnostic shadings are given, which summarise the analysis over the associated moral graph. Principles of local computation are outlined for the graphical models, and an algorithm for implementing such computation over the junction tree is described. The approach is illustrated with two examples. The first concerns sales forecasting using a multivariate dynamic linear model. The second concerns inference for the error variance matrices of the model for sales, and illustrates the generality of our geometric approach by treating the matrices directly as random objects. The examples are implemented using a freely available set of object-oriented programming tools for Bayes linear local computation and graphical diagnostic display.     

鲁迅小说的象征解读

文学的最高成就是这用象征,鲁迅则是使用象征的行家,他的小说中充满了象征构思和象征语象。对这样的经典之作,只有用象征主义的阐释方法即象征解读,才能领会其中的万千气象．本文从意旨符号、人物形象、情节布置、人生解构四个方面时鲁迅小说进行了象征解读,从而认为：象征是语言艺术的升华,是诗的点金术。鲁迅小说是诗．     

“诗中有画”辨析

“诗中有画”是中国古代诗学的经典批评术语,围绕着它,生发出了诗画转化说、诗画相异说和诗画一致说。究其本意,苏轼所认为的“诗中有画”,是指诗歌要像绘画一样具有相似写意风格,并且这种艺术风格是由绘画主导产生。围绕着“诗中有画”的争论,反映了不同时代对诗歌形与神关系的不同看法,是一种话语运作的结果。     

唐代女诗人李冶身世及作品考论

李冶被称为“女中诗豪”,其诗也堪称“大历正音”,然其身为女冠,却风情宕逸,与刘长卿、皎然、陆羽、朱放、阎士和等人更是情逾常礼,故历来论者多以“荡”字责之。这位看似放纵自由的女诗人,内心却深感寂寞,她那些深情婉转之作,断肠相思之声,字字都向世人昭示着她对友情的渴望、对爱情的执著。情重则“荡”,“荡”犹不能遣怨,则只有走向世俗抗争之路,其悲剧命运也就不可避免了。     

格律诗译文风格当代读者趋向调查分析

本文就不同的译文风格在不同层次的当代读者群中的走势进行了调查、分析与总结。结果发现如果读者是普通大众,他们偏向于宽式风格译文;如果读者是文化层次较高者,特别是有一定诗歌常识的读者,他们就会偏向于严式风格的译文。     

中西咏秋诗与思维方式比较研究

中西咏秋诗歌有不同的特征:中诗以形象的语言再现客观景物和诗人真情,西诗用抽象的语言和象征的手法表现主观心灵;中诗是悲情的抒发,而西诗是理性的思考和向往;中诗重情,西诗重理。形成这些不同特征的原因,主要是中西文化传统、诗人思维方式、人格特质等的相异。     

"梦"与"花":顾城和海子诗歌创作之比较

"梦"与"花",分别是顾城和海子诗歌文本中重要的意象.在"梦"的世界里,在"花"的掩映中,深藏着诗人的心灵追求和精神渴望.顾城在他的 "梦境"中表达了对"未来"和"远方"的追寻,而海子诗歌的"花朵"开放在"返乡"的路途,"回望"和"留守"是他的精神姿态.顾城用"梦"建造了一个"童话世界",海子则用"花"营造了一个"神性世界",他们诗歌的书写方式就是他们生命的书写方式."梦"与"花",和他们所生活的现实语境分别构成一种"对抗"和"超越"关系.     

普通地方高校国际化道路的探索

在高等教育全球化的背景下,普通地方高校也面临着国际化的挑战。然而在推进国际化过程中,由于普通地方高校对高等教育国际化的内涵和思路模糊,国际化发展定位盲目,评估体系片面以及推动模式僵化都制约了国际化的发展。因此普通地方高校应充分考量自身的特色和不足,探索与地方发展相结合的国际化道路,积极应对高等教育国际化带来的机遇和挑战。