Dynamic version of weighted cumulative residual entropy

Some extensions of Shannon entropy to the survival function have been recently proposed. Misagh et al. (2011 Misagh, F., Panahi, Y., Yari, G.H., Shahi, R. (2011, September). Weighted cumulative entropy and its estimation. In: Quality and Reliability (ICQR), 2011, IEEE International conference (pp. 477–480), IEEE.[Crossref] , [Google Scholar]) introduced weighted cumulative residual entropy (WCRE) that was studied more by Mirali et al. (2015 Mirali, M., Baratpour, S., Fakoor, V. (2015). On weighted cumulative residual entropy. Commun. Stat. Theory Methods. doi:10.1080103610926.2015.1053932.[Web of Science ®] , [Google Scholar]). In this article, the dynamic version of WCRE is proposed. Some relationships of this measure with well-known reliability measures and ageing classes are studied and some characterization results for exponential and Rayleigh distributions are provided. Also, a non parametric estimation of dynamic version of WCRE is introduced and its asymptotic behavior is investigated.     

Testing monotonic equilibrium residual entropy of N-State Random Evolution

In this study, we propose an information measure of uncertainty associated with the random equilibrium residual lifetime of a system driven by N-State Random Evolution. A U-statistic test driven by a moment inequality is proposed for testing the hypothesis that the uncertainty of equilibrium remaining life of a system remains unchanged (when system is in the steady state) against the alternative situation when system’s equilibrium residual life has increasing uncertainty over time (i.e., the life distribution has Increasing Equilibrium Residual Entropy property). Some numerical results such as tabulated critical values and empirical power of the proposed test statistic are presented as well.     

Bivariate extension of (dynamic) cumulative past entropy

Recently, the concept of cumulative residual entropy (CRE) has been studied by many researchers in higher dimensions. In this article, we extend the definition of (dynamic) cumulative past entropy (DCPE), a dual measure of (dynamic) CRE, to bivariate setup and obtain some of its properties including bounds. We also look into the problem of extending DCPE for conditionally specified models. Several properties, including monotonicity, and bounds of DCPE are obtained for conditional distributions. It is shown that the proposed measure uniquely determines the distribution function. Moreover, we also propose a stochastic order based on this measure.     

We are not walking wave functions. A response to “Quantum Mind and Social Science” by Alexander Wendt

Alexander Wendt raises many interesting questions in this book, but to get to the answers he wants, he relies on a misunderstanding of the nature of the quantum states of macroscopic objects.     

自贸区所属城市创新驱动发展评价

自贸区对所属城市创新能力具有直接推动作用。选取福建省为评价对象,应用改进熵值法,实证分析自贸区所属城市创新驱动发展要素及互动关系,指出科技进步、政策支撑、产业参与和环境匹配是区域创新的重要因素,在资源秉赋差异明显的情况下,应着力推进科研投入与措施创新,并加快人才培育和产业集聚。     

Rényi entropy of m-generalized order statistics

Abstract

Characterizing relations via Rényi entropy of m-generalized order statistics are considered along with examples and related stochastic orderings. Previous results for common order statistics are included.     

基于熵的同业税负测算方法研究

随着经济的不断发展,开展同业税负研究测算的意义也愈显重要.传统行业税负计算方法没有考虑非正常样本对计算结果的影响,所得到的税负平均值往往低于行业税负的正常值.本文首次将C4.5数据挖掘算法引入到行业税负测算过程中,有效避免了传统测算方法中的不足,并结合税收领域知识对该算法进行了改进应用;通过对算法测算结果进行验证表明,利用该算法选出的企业样本代表了真实的行业税负水平,具有很高的可信度.     

Mapping Invasive Species Risks with Stochastic Models: A Cross-Border United States-Canada Application for Sirex noctilio Fabricius

Nonindigenous species have caused significant impacts to North American forests despite past and present international phytosanitary efforts. Though broadly acknowledged, the risks of pest invasions are difficult to quantify as they involve interactions between many factors that operate across a range of spatial and temporal scales: the transmission of invading organisms via various pathways, their spread and establishment in new environments. Our study presents a stochastic simulation approach to quantify these risks and associated uncertainties through time in a unified fashion. We outline this approach with an example of a forest pest recently detected in North America, Sirex noctilio Fabricius. We simulate new potential entries of S. noctilio as a stochastic process, based on recent volumes of marine shipments of commodities from countries where S. noctilio is established, as well as the broad dynamics of foreign marine imports. The results are then linked with a spatial model that simulates the spread of S. noctilio within the geographical distribution of its hosts (pines) while incorporating existing knowledge about its behavior in North American landscapes. Through replications, this approach yields a spatial representation of S. noctilio risks and uncertainties in a single integrated product. The approach should also be appealing to decisionmakers, since it accounts for projected flows of commodities that may serve as conduits for pest entry. Our 30-year forecasts indicate high establishment probability in Ontario, Quebec, and the northeastern United States, but further southward expansion of S. noctilio is uncertain, ultimately depending on the impact of recent international treatment standards for wood packing materials.     

Confidence intervals,significance values,maximum likelihood estimates,etc. sharpened into Occam’s razors

Abstract

Confidence sets, p values, maximum likelihood estimates, and other results of non-Bayesian statistical methods may be adjusted to favor sampling distributions that are simple compared to others in the parametric family. The adjustments are derived from a prior likelihood function previously used to adjust posterior distributions.     

“一带一路”背景下中国对外承包工程的国别环境评价研究

对外承包工程是中国与"一带一路"沿线国家经济合作的主要形式之一，加强沿线国家承包工程的国别环境研究有利于降低风险和提高成功率。文章基于现有研究，新增营商环境因素，指标设计上考虑基础设施承包工程的特点，构建了包含6个环境因素、33个指标的工程承包国别环境综合评价体系，运用熵权法对"一带一路"64个国家的工程承包国别环境进行定量评价，对熵权法结果进行了Spearman检验和对国别环境综合值进行了聚类分析。研究结果表明：基础设施环境和经济环境是"一带一路"沿线工程承包重要的国别选择因素；"一带一路"沿线各国的工程承包环境差异显著，分布很不平衡，东南亚、南亚地区国家环境较好，中东欧和西亚北非区域次之，东亚、中亚和独联体地区较差；根据"一带一路"沿线国家工程承包环境评综合价值的大小，可以划分为四种类型：好、较好、较差和差。研究结论不仅为中国在"一带一路"沿线各国开展工程承包提供了国别选择的经验证据，同时为积极落实我国"走出去"战略以及"一带一路"倡议提供了重要参考。