广义线性模型与非线性模型参数的统计推断

概述了广义线性模型(含半参数广义线性模型)与非线性模型研究的新进展,着重讨论了它们参数估计的统计推断。近年来,广义线性模型与非线性模型的研究发展迅速,有着广泛的应用前景。     

实践工程总承包之体会

介绍了目前国际上广为采用的5种工程总承包方式以及水泥工业建设项目总包工程合同管理和索赔管理的内容与要求;分析了设计单位进行工程总承包的优势所在;探讨了工程总包实施中各类风险。     

An architectural design for effective information retrieval in semantic web

The current web IR system retrieves relevant information only based on the keywords which is inadequate for that vast amount of data. It provides limited capabilities to capture the concepts of the user needs and the relation between the keywords. These limitations lead to the idea of the user conceptual search which includes concepts and meanings. This study deals with the Semantic Based Information Retrieval System for a semantic web search and presented with an improved algorithm to retrieve the information in a more efficient way.This architecture takes as input a list of plain keywords provided by the user and the query is converted into semantic query. This conversion is carried out with the help of the domain concepts of the pre-existing domain ontologies and a third party thesaurus and discover semantic relationship between them in runtime. The relevant information for the semantic query is retrieved and ranked according to the relevancy with the help of an improved algorithm. The performance analysis shows that the proposed system can improve the accuracy and effectiveness for retrieving relevant web documents compared to the existing systems.     

On the history of Ludwig von Bertalanffy’s “general systemology”, and on its relationship to cybernetics - Part II: Contexts and developments of the systemological hermeneutics instigated by von Bertalanffy

The history of “general system theory” is investigated in order to clarify its meanings, vocations, foundations and achievements. It is characterized as the project of a science of the systemic interpretation of the “real”, renamed here “general systemology”. The contexts and modes of its elaboration, publication and implementation are discussed. The paper mostly focuses on the works of its instigator: Ludwig von Bertalanffy. However, general systemology was a collective project: the main contributions of other “systemologists”, from the 1950s until the 1970s, are hence also considered. Its solidarity with the history of the Society for General Systems Research is notably discussed. A reconstruction of the systemological hermeneutics is undertaken on this basis. It finds out the potential systematic unity underlying the diversity of the contributions to this both scientific and philosophical project. Light is thus shed on the actual scope of von Bertalanffy’s works.     

一种新的基于递归分解的图可达性查询算法

针对现实中许多超大规模图可达性查询的问题,提出了一种新的基于递归分解的算法,即将原图递归分解成一系列生成树和剩余图两类子图,并通过分别查询这两类子图来减少查询开销.相比于区间标记、链分解、2-hop标签和路径树等传统算法,该算法不仅空间开销更小,且时间复杂度更低.仿真实验表明,该算法对处理大规模有向图可达性问题上存储规模更小且查询效率更高.     

结合相关规则和本体加权图的查询扩展

针对现有信息检索系统查询性能的不足,提出了一种结合相关规则和WordNet本体信息的查询扩展方法.该方法借助相关规则挖掘和WordNet本体信息构建加权词语关系图,并根据加权图的结构和权重信息计算扩展词的重要性.查询时,从这个图中取原查询词的最邻近词作为扩展词来源,选取其中权重最大的p个词返回并进行二次检索.在实现算法的基础上,通过Lucene全文检索器进行实验,将所得的结果值F1与其他算法的结果作比较.比较结果表明,该方法比不作扩展的检索有约16.93％的性能提升.     

图的点可区别边染色算法研究

针对一般图设计了一种新型的点可区别边染色算法。该算法把概率思想和图染色相结合, 根据点可区别边染色的约束规则确立目标函数, 利用交换规则逐步寻优, 当目标函数的值满足要求时染色成功。给出详细算法步骤并进行了测试和分析, 实验结果表明该算法可以求出满足猜想的点可区别边色数。     

通用树脂制备分离膜的研究进展

综述了近年来制备聚丙烯(PP)、聚乙烯(PE)分离膜及分离膜表面改性的研究进展,介绍了熔融纺丝-冷却拉伸法、热致相分离法、共混拉伸法、熔融烧结法等分离膜的常用制备方法。PP、PE分离膜的制备在我国有着广阔的发展前景。     

Querying Big Data: Bridging Theory and Practice

Big data introduces challenges to query answering, from theory to practice. A number of questions arise. What queries are ＂tractable＂ on big data？ How can we make big data ＂small＂ so that it is feasible to find exact query answers？When exact answers are beyond reach in practice, what approximation theory can help us strike a balance between the quality of approximate query answers and the costs of computing such answers？ To get sensible query answers in big data,what else do we necessarily do in addition to coping with the size of the data？ This position paper aims to provide an overview of recent advances in the study of querying big data. We propose approaches to tackling these challenging issues,and identify open problems for future research.     

基于PXI技术的飞控计算机通用测试平台的构建

针对飞控计算机的信号特性及数量,构建以PXI总线技术为核心的通用测试设备,能够满足多余度计算机的测试。对于不同型号的飞控计算机只需开发不同的测试适配器和信号调理板,就能满足不同型号的测试要求,达到资源共享、快速研制的目的。该通用平台同时可以满足产品从研制、试验、到小批量生产的要求。