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排序方式: 共有135条查询结果,搜索用时 15 毫秒
21.
Don McNeil 《The American statistician》2013,67(4):307-311
Techniques for graphing paired data are considered. A conventional method frequently used when reporting scientific results, particularly in medical journals, involves representing pairs of measurements by straight line segments titled at different angles related to the differences between the components of the data pairs. However when the sample size is only moderately large, this type of display can become cluttered and thus uninformative due to overlap. It is suggested that a new graph that combines features of ANOVA plots and multivalued dot charts may provide a more effective visual display of paired data. A designed experiment in data perception using simulated data provides some evidence in favor of this parallel line plot. 相似文献
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In this paper, within the framework of a Bayesian model, we consider the problem of sequentially estimating the intensity parameter of a homogeneous Poisson process with a linear exponential (LINEX) loss function and a fixed cost per unit time. An asymptotically pointwise optimal (APO) rule is proposed. It is shown to be asymptotically optimal for the arbitrary priors and asymptotically non-deficient for the conjugate priors in a similar sense of Bickel and Yahav [Asymptotically pointwise optimal procedures in sequential analysis, in Proceedings of the Fifth Berkeley Symposium on Mathematical Statistics and Probability, Vol. 1, University of California Press, Berkeley, CA, 1967, pp. 401–413; Asymptotically optimal Bayes and minimax procedures in sequential estimation, Ann. Math. Statist. 39 (1968), pp. 442–456] and Woodroofe [A.P.O. rules are asymptotically non-deficient for estimation with squared error loss, Z. Wahrsch. verw. Gebiete 58 (1981), pp. 331–341], respectively. The proposed APO rule is illustrated using a real data set. 相似文献
23.
Jiajia Chen Karel Hron Matthias Templ Shengjia Li 《Journal of applied statistics》2018,45(11):2067-2080
The logratio methodology is not applicable when rounded zeros occur in compositional data. There are many methods to deal with rounded zeros. However, some methods are not suitable for analyzing data sets with high dimensionality. Recently, related methods have been developed, but they cannot balance the calculation time and accuracy. For further improvement, we propose a method based on regression imputation with Q-mode clustering. This method forms the groups of parts and builds partial least squares regression with these groups using centered logratio coordinates. We also prove that using centered logratio coordinates or isometric logratio coordinates in the response of partial least squares regression have the equivalent results for the replacement of rounded zeros. Simulation study and real example are conducted to analyze the performance of the proposed method. The results show that the proposed method can reduce the calculation time in higher dimensions and improve the quality of results. 相似文献
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“十二五” 规划中“包容性增长”概念探析 总被引:1,自引:0,他引:1
姜广举 《南华大学学报(社会科学版)》2011,12(4):25-28
“包容性增长”包括经济、政治、文化、社会、生态等各个方面,经济增长与其他各方面的增长应该是互相协调、和谐增长、可持续增长和科学增长;经济增长的同时,财富公平分配,不造成贫富差距,向低收入人群倾斜,使所有人都从增长中获益。文章旨在通过对“包容性增长”概念之阐释,以更好地理解“包容性增长”的深刻含义,促进经济变革与社会更好更快地发展。 相似文献
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通过建立指标分类理论讨论了一维p-Laplacian方程(φp(u′))′+q(t)φp(u)=0,a.e on[0,1]在Neumann边值u′(0)=0=u′(1)条件下平凡解和非平凡解的存在性,其中φp(s)=s p-2s,p>1,q∈L∞(0,1)。 相似文献
27.
三阶线性齐次微分方程解的Sturm比较定理 总被引:1,自引:0,他引:1
研究了一类三阶线性齐次微分方程解的Sturm比较定理的理论,在三阶线性齐次微分方程的Sturm基本定理的基础上得出了Sturm比较定理,所得结论推广了现有文献的相应结果。 相似文献
28.
欧阳爱辉 《石家庄铁道学院学报(社会科学版)》2010,(4):57-61
私人刑事调查作为自我保护与私力救济的重要手段,它同侦查存在着紧密联系。经过分析比较发现,一方面私人刑事调查与侦查有着明显同质性,这多涵盖最终目的、历史起源和启用手段种类三部分。另一方面它们二者又存在明显异质性,这主要包括基本性质、实施主体、启用手段比重、直接目的、运作范围、具体程序及受众心理七方面。 相似文献
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For vectors z and w and scalar v, let r(v, z, w) be a function that can be nonparametrically estimated consistently and asymptotically normally, such as a distribution, density, or conditional mean regression function. We provide consistent, asymptotically normal nonparametric estimators for the functions G and H, where r(v, z, w) = H[vG(z), w], and some related models. This framework encompasses homothetic and homothetically separable functions, and transformed partly additive models r(v, z, w) = h[v + g(z), w] for unknown functions gand h Such models reduce the curse of dimensionality, provide a natural generalization of linear index models, and are widely used in utility, production, and cost function applications. We also provide an estimator of Gthat is oracle efficient, achieving the same performance as an estimator based on local least squares when H is known. 相似文献