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Discovering Complex Matches Between Database Schemas

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Discovering Complex Matches Between Database Schemas

第二十七届中国控制会议

作者： Qian Ying 1.Yue Liwen 2,Liu Zhenglin 3.1.Network and {1. Education technology Center,Hebei Normal university of Science&technology,Qinhuangdao 066004,P.R.china 2.College of Information and Engineering,Yanshan university,Qinhuangdao 066004,P.R.china 3.IT department,E&A College of Hebei Normal university of Science & technology,Qinhuangdao 066004,P.R.china

Schema matching,the problem of finding semantic correspondences between elements of two schemas,plays a key role in many applications,such as data warehouse,heterogeneous data sources integration and semantic *** existing approaches to automating schema matching almost focus on computing direct element matches（1.1.matches） between two ***,relationships between real-world schemas involve many complex matches besides 1.1.*** present,there are few methods can discover complex matches,such as iMAP [1.,but most of them have poor matching efficiency,because the candidate match space is so large which they need searching.A complex schema matching system called CSM is introduced in this *** it can filter unreasonable matches on data types and values by preprocessor and clustering processor;then it employs a set of special-purpose searchers in match generator to explore a specialized portion of the search space and discovers 1.1.and complex matches;Finally it estimates candidate matches and selects optimal candidate matches by using similarity estimator and match selector *** show that,CSM does not only discover matches between schemas roundly,but also improve the matching recall and precision in practice.

关键词： Schema matching Complex match Clustering Similarity

THE NEIGHBORHOOD INTERSECTIONS OF ESSENTIAL SETS AND HAMILTONICITY OFGRAPHS

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Systems Science and Mathematical Sciences 1998年第3期11卷 230-237页

作者： WU Zhengsheng(department of Mathematics, Naming Normal {1., Naming 21.097, china)XU Xinping(department of Mathematics, Jiangsu Education College, Naming 21.01.4} china)ZHOU Xinghe(department of Mathematics, Naming Normal {1., Nabbing 21.097,

Let G be a graph. An independent set Y in G is called an essential independent set (or essential set for simplicity) if there is {yi , y2} Y such that dist(y1., y2) - 2. For integer t > 0, let It(G) = {Y| Y is an independent set of G, |Y| = t}, It(G) = {Y|Y is an essential set of G, |Y| = t}. For ∈E It(G), let si(y) = |{v|v ∈V(G), |N(v) n Y| = i}|(i = 0, 1.…, t). Let X, Y g V(G). Define dist(X, Y) = dist(u, v), n(Y) = |{v|v ∈V(G), dist({v}, Y) ≤ 2}|. A non-negative rational sequence (a1.a2,…, ak+1. (k ≥2) is called an LTW-sequence, if it satisfies 1. a1.≤ 1. 2) for arbitrary i1. i2,…，ih. ∈{2,3.……, k + 1., The main new results of this paper are as follows: Let (a1. a2，… ak+1. be all LTW-sequence, and k ≥ 2. If G is a k-connected graph, and then G has a Hamilton cycle; if G is a (k + 1.-connected graph and for each then G is Hamilton-connected. The existing results are generalized by these since Ik+1.G) is replaced by I(G). We introduce a new technique of T-insertion in this paper， by using the T-vertex inserting lemmas we give a unified proof for a graph to be hamiltonian or Hamilton-connected.

关键词：篖TW-sequence essential sets T-vertex insertion hamiltonicity

Selection of Multifractal Scaling Breaks andSeparation of Geochemical andGeophysical Anomaly

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Journal of china {1. of Geosciences 2001年第1期12卷 54-59页

作者： Cheng Qiuming department of Earth and Atmospheric Science, department of Geography, York university, Toronto, Ontario, Canada, M3. 1.3 department of Earth and Atmospheric Science Department of Geography York University Toronto Ontario Canada M3J 1P3

Spatially superimposed multiple processes such as multiplicative cascade processes often generate multifractal measures possessing so-called self-similarity or self-affinity that can be described by power- law type of functions within certain scale ranges The multifractalities can be estimated by applying multifractal modeling to the measures reflecting the characteristics of the physical processes such as the element concentration values analyzed in rock and soil samples and caused by the underlying mineralization processes and the other geological processes. The local and regional geological processes may result in geochemical patterns with distinct multifractalities as wall as variable scaling ranges. Separation of these multifractal measures on the basis of both the distinct multifractalities and the scaling ranges will be significant for both theoretical studies of multifractal modeling and its applications. Multifractal scaling breaks have been observed from various multifractal patterns. This paper introduces a technique for separating multifractal measures on the basis of scaling breaks. It has been demonstrated that the method is effective for decomposing geochemical and geophysical anomalies required for mineral exploration. A dataset containing the element concentration values of potassium and phosphorus in soil samples was employed for demonstrating the application of the method for studying the fertilizer and yield optimization in agriculture

关键词： mineralization processes self-similarity geochemical anomaly separation multifractal scaling breaks.

A Radar Anti-jamming technology Based on Blind Source Separation

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A Radar Anti-jamming Technology Based on Blind Source Separa...

第七届国际信号处理会议

作者： Gaoming Huang1.2 Luxi Yang1.1. department of Radio Engineering Southeast {1. Nanjing china 21.096 2. Naval {1. of Engineering Wuhan china 43.03.

In radar system research, the performance of radar anti-jamming is a problem for a long time. Radar can acquire a better detecting and tracking ability if the problem is solved. The localization of

关键词： blind source separation radar anti-jamming

Syntheses, properties and structures of copper and nickel complexes of 6,7-dihydro-5H-1.4-dithiepin-2,3.dithiolate

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Chinese Journal of Chemistry 1994年第3期12卷 248-257页

作者： YAO, Tian-Ming YOU, Xiao-ZengCoordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing university,Nanjing 21.008,{1.YANG, Qing-ChuanChemistry department, Beijing university, Beijing 1.0871.{1. 1.oordination Chemistry Institute State Key Laboratory of Coordination Chemistry Nanjing University Nanjing 210008 China2Chemistry Department Beijing University Beijing 100871 China

The reaction of CuCl2-2H2O or NiCl2.6H2O with K2(C5H6S4) [potassium salt of 6,7-dihydro-5H-1.4-dithiepin-2,3.dithiolate] under nitrogen atmosphere resulted in the isolation of [Cu(C5H6S4)2]- or [Ni(C5H6S4)2]- as the tetrabutylammonium salt. Both complexes show characteristic IR and UV-Vis absorptions of transition metal dithiolenes. Cyclic voltammograms contain two waves indicating a two step electrochemical procedure [M(C5H6S4)2]0 = [M(C5H6S4)2]1.= [M(C5H6S4)2]2-. Single crystal structure study has been carried out on the nickel complex. Crystal of [Bu4N][Ni(C5H6S4)2] belongs to monoclinic space group P21.c with a=1..576(5), 6=1..883.2), c=1..773.4) A,B=91.07(2)0, Z=4, and o(calcd.)=1.3.8 g/cm3. Final result is R=0.059 for 2959 reflections. The NiS4 core exhibits square planar coordination with average Ni-S bond length of 2.1.0}(5) A. There are not anion pairs in crystal. The anions stack along a and c axes while the cations intercalate in them. The nearest S-S contact is 4.429 A. The solid powder ESR spectrum of the nickel complex shows three broadening signals at g1.2.097, g2=2.042, g3.2.022. Magnetic susceptibility data for [Bu4N][Ni(CgH6S4)2] reveal enhanced anti-ferromagnetic interaction.

关键词： Dithiolene complex copper nickel single crystal.

μ-AVERAGE N-WIDTHS ON THE WIENER SPACE

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Analysis in Theory and Applications 1994年第3期10卷 17-31页

作者： Wang Chengyong Northern Jiao Tung university,{1. 1. department of Mathmatics Northern Jiao Tung University 100044 Beijing P. R. China

In this paper we investigate the asymptotic bebaviour of μ-average n-widths of integral operator K on the Wiener space. where K is the inverse operator of an ordinary linear differential operator L of order m. For 1...

关键词： Integral Operator Green Function Separable Banach Space Orthonormal System Information Operator

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边不对称网络的QoS组播路由算法

天津大学学报（自然科学与工程技术版） 2003年第2期36卷 160-164页

作者：王燕琳孙雨耕俎云霄天津大学电气与自动化工程学院天津300072 清华大学电机工程系北京100084

针对QoS组播路由问题,建立链路负载不对称网络模型,以平衡网络负载为目标提出一种基于带宽和延时约束的QoS组播路由遗传算法(BDMGA).通过对该算法的收敛性分析和与其他算法的性能比较研究表明,该算法构建的组播树费用较低,且算法具有很... 详细信息

针对QoS组播路由问题,建立链路负载不对称网络模型,以平衡网络负载为目标提出一种基于带宽和延时约束的QoS组播路由遗传算法(BDMGA).通过对该算法的收敛性分析和与其他算法的性能比较研究表明,该算法构建的组播树费用较低,且算法具有很强的均衡负载能力,可有效避免链路拥塞,提高网络运行性能.此外,在小规模的网络上能够以较快的速度收敛到全局最优解.

关键词：组播路由服务质量遗传算法负载平衡

Research on the General Architecture of Ontology Learning System

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Research on the General Architecture of Ontology Learning Sy...

2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： KuiFu~1.Guihua Nie~2 1.department of Electronic Business,Wuhan {1. of technology,Wuhan,Hubei 43.070,{3. 2 department of Electronic Business,Wuhan {1. of technology,Wuhan,Hubei 43.070,{3.

This paper proposes a unified,open,extensible,domain independent,and scalable architecture of ontology learning *** unified functional structure and standardized access interfaces are defined for ontology learning *** architecture consists of resource layer and five main function modules:resource management module,general resource read/write module,data preprocessing module,ontology extraction module and ontology evaluation and editing module. Functions and constitutions of resource layer and all modules are depicted in *** main goal is to provide support for reuse of ontology learning methods and components,ontology industrialization producing, periodical ontology refinement.

关键词： ontology ontology learning knowledge acquisition

Adaptive Control for A Class of Nonlinear Uncertain Systems Based on Fuzzy Logic System

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Adaptive Control for A Class of Nonlinear Uncertain Systems ...

智能计算及其应用国际会议

作者： WANG Wenli 1.LI Zhiyuan2 WANGYinhe1.(1. department of Mathematics Shantou {1. Shantou 51.063.china) (2. department of Mathematics Inner Mongolia Normal {1. Huhuhot 01.022 china)

We suggest a nonlinear controller and adaptive law design method by using fuzzy logic system for a general class of nonlinear uncertain systems with unknown bounds of uncertainties. The robust control

关键词： uncertainty fuzzy logic system adaptive law UUB