A Bayesian analysis of directional data using the projected normal distribution

This paper presents a Bayesian analysis of the projected normal distribution, which is a flexible and useful distribution for the analysis of directional data. We obtain samples from the posterior distribution using the Gibbs sampler after the introduction of suitably chosen latent variables. The procedure is illustrated using simulated data as well as a real data set previously analysed in the literature.     

一般约束极大极小值的梯度投影算法

对一类带等式、不等式约束的极大极小值问题进行了研究,将其转化为带等式、不等式约束的非线性规划问题,并利用梯度投影算法进行求解。该算法在有限步达到最优点或产生一系列点,且其极限点是最优点。该算法减少了计算量,克服了数值实现上的困难,证明了算法的收敛性。     

论"三"是思维的一个重要语言工具

"三"在空间维度、时间维度、实践维度上的思维表现都是十分活跃的.究其原因,是"三"这个词所特有的含义的反映,是思维内在逻辑的外在显现.     

隐喻的分类及其认知功能探索

文章通过综合Lakoff＆Johnson,GeorgeLakoff,BipinIndurkhya,Mey,Ungerer＆Schmid等学者关于隐喻的论述,将隐喻分为结构隐喻,方位隐喻,本体隐喻和创造相似性的隐喻等四种类型并讨论了它们的认知功能;并探索性地运用投射性隐喻过程来解释由Joos提出,易仲良发展了的英语动词过去时"距离性"语法意义拓展的过程。     

Was the conservative majority predictable?

Canada's $41{\rm st}$ national general election saw the Conservative Party increase its seat count from 143 to 166, thus giving it a majority of the national parliament's 308 seats. By contrast, nearly all of the pre‐election seat count forecasts predicted a Conservative minority only. We examine the extent to which simple statistical models could or could not have predicted the Conservative majority prior to the election. We conclude that, by using data from the previous (2008) election appropriately, the Conservative majority should have been anticipated as the most likely outcome. The Canadian Journal of Statistics 39: 721–733; 2011. © 2011 Statistical Society of Canada     

Maximum expected entropy transformed Latin hypercube designs

Existing projection designs (e.g. maximum projection designs) attempt to achieve good space-filling properties in all projections. However, when using a Gaussian process (GP), model-based design criteria such as the entropy criterion is more appropriate. We employ the entropy criterion averaged over a set of projections, called expected entropy criterion (EEC), to generate projection designs. We show that maximum EEC designs are invariant to monotonic transformations of the response, i.e. they are optimal for a wide class of stochastic process models. We also demonstrate that transformation of each column of a Latin hypercube design (LHD) based on a monotonic function can substantially improve the EEC. Two types of input transformations are considered: a quantile function of a symmetric Beta distribution chosen to optimize the EEC, and a nonparametric transformation corresponding to the quantile function of a symmetric density chosen to optimize the EEC. Numerical studies show that the proposed transformations of the LHD are efficient and effective for building robust maximum EEC designs. These designs give projections with markedly higher entropies and lower maximum prediction variances (MPV''s) at the cost of small increases in average prediction variances (APV''s) compared to state-of-the-art space-filling designs over wide ranges of covariance parameter values.     

Construction of some new families of nested orthogonal arrays

Nested orthogonal arrays have been used in the design of an experimental setup consisting of two experiments, the expensive one of higher accuracy being nested in a larger and relatively less expensive one of lower accuracy. In this paper, we provide new methods for constructing two types of nested orthogonal arrays.     

Bring publics back into networked public relations research: A dual-projection approach for network ecology

This essay critiques the absence of publics in networked public relations research, and proposes the dual-projection approach as a solution to simplify and analyze the multi-mode public relations network ecology (Yang & Taylor, 2015). Compared to most previous studies that employ organization-centric networks where ties stand for hyperlinks, collaborations, or coalitions, the new approach projects organization-public relationships and public-public relationships onto interorganizational ties. By doing so, it (1) brings publics back into networked public relations research; (2) presents organizations and publics—the two most important subjects of public relations research—equally in the same network, (3) drives literature further away from a dyadic view of relationship management, and (4) constitutes one of the first techniques that can analyze direct and timely consequences of organziation-public relationships in the network ecology. To demonstrate the new approach, the network of publics overlap is introduced and applied to US-based LGBTQ advocacy groups. The essay also discusses the theoretical inquiries needed to further dual-projection networks, and invites scholars to create novel ways to incorporate publics into their network studies using dual projection.     

论翻译单位的本质

探讨翻译单位研究的形式-语义途径和功能途径的不足之处,并指出翻译单位研究依托于传统语言学理论有着极大的局限性,最后论述了翻译单位的本质,明确这一本质能更好地避免翻译实践的各种不良倾向.     

共识值域与理论阐释

文章将一个具体的结论形成过程区分为核心值域、支撑值域、映射值域三个方面,分析了各个部分的组成、来源,详细探讨了映射值域形成过程中的复杂因素,并由此探讨了不同对象之间就具体问题达成共识的方式途径,最后探讨了要使理论阐释获得最大限度认可应遵循的原则。