Comparison of Interval Estimators of Pr(X < Y) in the Two-parameter Exponential Distribution

We consider confidence intervals for the stress–strength reliability Pr(X< Y) in the two-parameter exponential distribution. We have derived the Bayesian highest posterior density interval using non-informative prior distributions. We have compared its performance with the intervals based on the generalized pivot variable intervals in terms of their coverage probabilities and expected lengths. Our simulation study shows that the Bayesian interval performs better according to the criteria used, especially when the sample sizes are very small. An example is given.     

知识搜索引擎与翻译

信息化进程的纵深发展对翻译行业产生了深刻的影响,译者如何从海量信息中高效获取信息关系到其翻译服务的质量。因此,译者的信息素养和搜索能力显得愈发重要。通过探讨搜索引擎的补充和延伸——知识搜索引擎,着重论述知识搜索引擎相对于传统搜索引擎,在主题分类、一站式知识检索、互动式知识问答、个性化知识库等方面具备的突出优势,并对比国内三大知识搜索引擎,论述其在翻译实践中的重要启示。     

Approximate composite marginal likelihood inference in spatial generalized linear mixed models

Non-Gaussian spatial responses are usually modeled using spatial generalized linear mixed model with spatial random effects. The likelihood function of this model cannot usually be given in a closed form, thus the maximum likelihood approach is very challenging. There are numerical ways to maximize the likelihood function, such as Monte Carlo Expectation Maximization and Quadrature Pairwise Expectation Maximization algorithms. They can be applied but may in such cases be computationally very slow or even prohibitive. Gauss–Hermite quadrature approximation only suitable for low-dimensional latent variables and its accuracy depends on the number of quadrature points. Here, we propose a new approximate pairwise maximum likelihood method to the inference of the spatial generalized linear mixed model. This approximate method is fast and deterministic, using no sampling-based strategies. The performance of the proposed method is illustrated through two simulation examples and practical aspects are investigated through a case study on a rainfall data set.     

Bayesian inference for stable Lévy–driven stochastic differential equations with high‐frequency data

In this paper, we consider parametric Bayesian inference for stochastic differential equations driven by a pure‐jump stable Lévy process, which is observed at high frequency. In most cases of practical interest, the likelihood function is not available; hence, we use a quasi‐likelihood and place an associated prior on the unknown parameters. It is shown under regularity conditions that there is a Bernstein–von Mises theorem associated to the posterior. We then develop a Markov chain Monte Carlo algorithm for Bayesian inference, and assisted with theoretical results, we show how to scale Metropolis–Hastings proposals when the frequency of the data grows, in order to prevent the acceptance ratio from going to zero in the large data limit. Our algorithm is presented on numerical examples that help verify our theoretical findings.     

Integrated nested Laplace approximation for the analysis of count data via the combined model: A simulation study

The combined model accounts for different forms of extra-variability and has traditionally been applied in the likelihood framework, or in the Bayesian setting via Markov chain Monte Carlo. In this article, integrated nested Laplace approximation is investigated as an alternative estimation method for the combined model for count data, and compared with the former estimation techniques. Longitudinal, spatial, and multi-hierarchical data scenarios are investigated in three case studies as well as a simulation study. As a conclusion, integrated nested Laplace approximation provides fast and precise estimation, while avoiding convergence problems often seen when using Markov chain Monte Carlo.     

话语标记“要不”简

“要不”有多个义项,到目前为止前人对“要不”表示“建议义”的用法还很少涉及。表示“建议义”的“要不”已经虚化为一个话语标记,对话语的生成和理解起到组织和调控功能;在语句中主要起到语篇衔接、间接否定、开启话题和人际互动功能：其生成动因是语言表达的主观性和交互主观性;生成机制是语境吸收和语用推理。     

工程车辆液力变矩器与发动机匹配的研究

对工程车辆中液力变矩器与发动机匹配的原则、评价指标和评价方法进行了分析研究，并结合工程车辆中使用工况比较复杂的装载机，进行了液力变矩器与发动机匹配评价的实例分析．     

互联网免费专利搜索引擎innojoy在专利检索分析中的应用

专利文献是专利技术信息的载体,对专利文献进行分析可以为企业了解行业格局、掌握竞争对手动向及研发立项提供重要参考。互联网免费专利搜索引擎的出现为企业专利工作者进行专利文献的检索分析提供了便利。本文以innojoy为例,介绍了互联网免费专利搜索引擎在专利检索分析中的应用。     

试从关联理论角度看语用翻译

文章根据关联理论的明示-推理交际模式,提出了语用翻译实际上是双明示-推理的交际过程,是涉及到原文作者、译者、译文读者三个交际主体的动态的三元翻译,并探讨了认知语用学的关联理论对语用翻译的启发和指导意义,进而尝试将关联理论的研究成果应用于解决翻译实践中的文化、语用类问题。     

多焊接电源控制技术

现代的膜式水冷壁制造工艺要求多达２０台焊接电源同时工作,当外网原因使车间供电电压波动的时候,焊接电源群同时进行调整。群焊接电源的冲击性载荷对电网进行反激,导致电网的更大波动。文章引入优先级的概念,将自适应神经模糊推理系统(ANFIS)应用到焊接电源群的优先级控制上,设计了自适应神经模糊推理网络,并利用MATLAB平台进行整个焊接系统的建模和仿真。结果表明应用该优先级群控策略,各焊机调整能力加强,调整时间缩短,动态性能得到改善。