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Evaluation Method of Web Site Structure Based on Web Structure Mining

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wuhan University Journal of Natural Sciences 2003年第3A期8卷 791-796页

作者： Li Jun\|e 1., Zhou Dong\|ru 2.1. Computer Center,{1. University, wuhan 430072. hubei,{2. 2. school of Computer,{1. University, wuhan 430072. hubei,china wuhan University Computer Center Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***) wuhan University School of Computer Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***)

The structure of Web site became more complex than before. During the design period of a Web site, the lack of model and method results in improper Web structure, which depend on the designer's experience. From the point of view of software engineering, every period in the software life must be evaluated before starting the next period's work. It is very important and essential to search relevant methods for evaluating Web structure before the site is completed. In this work, after studying the related work about the Web structure mining and analyzing the major structure mining methods (Page\|rank and Hub/Authority), a method based on the Page\|rank for Web structure evaluation in design stage is proposed. A Web structure modeling language WSML is designed, and the implement strategies for evaluating system of the Web site structure are given out. Web structure mining has being used mainly in search engines before. It is the first time to employ the Web structure mining technology to evaluate a Web structure in the design period of a Web site. It contributes to the formalization of the design documents for Web site and the improving of software engineering for large scale Web site, and the evaluating system is a practical tool for Web site construction.

关键词： web structure mining page\|rank web structure evaluation modeling language for web structure

On the Symmetry Classes of Functions

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wuhan University Journal of Natural Sciences 2005年第5期10卷 813-816页

作者： ZHU Ping~1,2. FAN Yun~3 1. school of mathematics and {2., wuhan University, wuhan 430072. hubei, china 2. school of Science, Beijing University of Posts and Telecommunications, Beijing 100876, china 3. school of mathematics and {2., Huazhong Normal University, wuhan 430079, {12., china wuhan University School of Mathematics and Statistics Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***) Beijing University of Posts and Telecommunications School of Science Beijing China (GRID:grid.31880.32) Huazhong Normal University School of Mathematics and Statistics Wuhan Hubei China (GRID:grid.411407.7) (ISNI:***)

Let R be an integral domain of characteristic zero such that the corresponding group rings have block decompositions. We first prove that the submodule consisting of all the R-valued ξi-symmetric functions of several variables is a symmetry class, where ξi is any block character. Then we present a relationship among certain operators introduced for block character. Then we present a relationship among certain operators introduced for block characters. As a consequence, we obtain a decomposition of an arbitrary R-valued function of several variables. Finally, we describe the symmetry property of such summands and determine all the symmetry classes.

关键词： symmetry class strict symmetry class blockcharacter ξi-symmetric function block idempotent

Polarity for a Class of Levy Processes

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wuhan University Journal of Natural Sciences 2002年第4期7卷 394-398页

作者： Wu Chuan ju 1,2., Liu Lu qin 1 1. school of mathematics and {2., wuhan University, wuhan 430072. hubei, china 2. College of Urban Construction, wuhan University of Science and Technology, wuhan 430070, hubei, china wuhan University School of Mathematics and Statistics Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***) wuhan University of Science and Technology College of Urban Construction Wuhan Hubei China (GRID:grid.412787.f) (ISNI:***) wuhan University School of Mathematics and Statistics Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***)

Polar set of Markov processes is an important concept in probabilistic potential theory, but it is not easy to judge the polarity of the sets. In this paper, we give some results which can be easily used to examine the polarity of the sets whenX t belongs to a special class of Levy processes. We also give a result about polar functions of symmetric stable processes.

关键词： Levy process subordinator (essentially) polar set polar function

A Principal Theorem of Normal Discretization Schemes for Operator Equations of the First Kind

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wuhan University Journal of Natural Sciences 2001年第4期6卷 767-768页

作者： Du Nai lin 1, Wang Hannah 2.1.school of mathematics and {2., wuhan University, wuhan 430072. china 2. school of Foreign Languages and Literature,wuhan University,wuhan 430072.china wuhan University School of Mathematics and Statistics Wuhan China (GRID:grid.49470.3e) (ISNI:***) wuhan University School of Foreign Languages and Literature Wuhan China (GRID:grid.49470.3e) (ISNI:***)

The authors announce a newly-proved theorem of theirs. This theorem is of principal significance to numerical computation of operator equations of the first kind.

关键词： operator equation of the first kind normal discretization scheme pure pseudoinverse

Non-Homogeneous Riemann Boundary Value Problem with Radicals

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wuhan University Journal of Natural Sciences 2002年第4期7卷 379-382页

作者： Lu Jian-ke school of {1. and {2.,wuhan University,wuhan 430072. hubei,china wuhan University School of Mathematics and Statistics Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***)

The solution of the non-homogeneous Riemann boundary value problem with radicals (1. 2. together with its condition of solvability is obtained for arbitrary positive integersp andq, which generalizes the results for t... 详细信息

关键词： Riemann boundary value problem branch points of radicals index order at infinity sectionally holomorphic functions

An Overview on Wavelet Software Packages

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wuhan University Journal of Natural Sciences 2001年第Z1期6卷 593-600页

作者： Fan Qi\|bin 1. Li Hong 2.1. {1. of mathematics and {2., wuhan University, wuhan 430072. china 2. {1. of Electronic Information, wuhan University, wuhan 430072. china school of {1. and {2. Wuhan University Wuhan China school of Electronic Information Wuhan University Wuhan China

Wavelet analysis provides very powerful problem\|solving tools for analyzing, encoding, compressing, reconstructing, and modeling signals and images. The amount of wavelets\|related software has been constantly multiplying. Many wavelet analysis tools are widely available. This overview represents a significant survey for many currently available packages. It will be of great benefit to engineers and researchers for using the toolkits and developing new software. The beginner to learning wavelets can also get a great help from the review. If you browse around at some of the Internet sites listed in the reference of this paper, you may find more plentiful wavelet resources.

关键词： wavelet transforms image compression matching pursuit lifting MATLAB

Electronic Structure of Doped Trans-Polyacetylene

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wuhan University Journal of Natural Sciences 2002年第1期7卷 51-53页

作者： Ren Da-zhi 1.2. Zhuang Wei 2. Wang Jun 2.1. wuhan University Journals Press,wuhan {2.hubei,china 2. school of Physics and Technology, wuhan University, wuhan {2.hubei,china wuhan University Journals Press Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***) wuhan University School of Physics and Technology Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***) wuhan University School of Physics and Technology Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***)

The behavior of electronic structures of doped trans-polyacetylene is revealed by a simple method. (C2.H2.)+n is used to simulate p-type doped trans-polyacetylene at various doping concentrations. The electronic structure is calculated, by CNDO/2.method. These calculations show that at low doping level, the decrease of electronic energy compensates the increase of elastic energy, thus the bond alternation exists, and the charge carriers are solitons. When doping level is high, the increase of elastic energy is larger than the decrease, of electronic energy, the bond alternation disappears, solitons no longer exist, and polyacetylene is in a metalic state.

关键词： trans polyacetylene CNDO/2 electronic structure doped

Smooth solutions of non-linear stochastic partial differential equations driven by multiplicative noises

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Science china {1. 2010年第11期53卷 2949-2972页

作者： ZHANG XiCheng school of {1. and {2., wuhan University, wuhan 430072. china 1. school of {1. and {2. Wuhan University Wuhan 430072 China

In this paper, we study the regularity of solutions of nonlinear stochastic partial differential equations (SPDEs) with multiplicative noises in the framework of Hilbert scales. Then we apply our abstract result to several typical nonlinear SPDEs such as stochastic Burgers and Ginzburg-Landau equations on the real line, stochastic 2. Navier-Stokes equations (SNSEs) in the whole space and a stochastic tamed 3D Navier-Stokes equation in the whole space, and obtain the existence of their smooth solutions respectively. In particular, we also get the existence of local smooth solutions for 3D SNSEs.

关键词： smooth solutions stochastic partial differential equations stochastic Navier-Stokes equations

Necessary and sufficient conditions for moderate deviations of dependent random variables with heavy tails

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Science china {1. 2010年第6期53卷 1421-1434页

作者： LIU Li school of {1. and {2.,wuhan University,wuhan 430072.china 1. school of {1. and {2. Wuhan University Wuhan 430072 China

This paper studies the moderate deviations of real-valued extended negatively dependent(END) random variables with consistently varying *** moderate deviations of partial sums are first *** results are then used to establish the necessary and sufficient conditions for the moderate deviations of random sums under certain circumstances.

关键词： moderate deviation extended negative dependence consistently varying tail random sum